WO2020186417A1 - Crimped conductive polyamide filament, and manufacturing method therefor and application thereof - Google Patents

Crimped conductive polyamide filament, and manufacturing method therefor and application thereof Download PDF

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Publication number
WO2020186417A1
WO2020186417A1 PCT/CN2019/078462 CN2019078462W WO2020186417A1 WO 2020186417 A1 WO2020186417 A1 WO 2020186417A1 CN 2019078462 W CN2019078462 W CN 2019078462W WO 2020186417 A1 WO2020186417 A1 WO 2020186417A1
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WIPO (PCT)
Prior art keywords
conductive
nylon
crimped
conductive filament
filament
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PCT/CN2019/078462
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French (fr)
Chinese (zh)
Inventor
周焕民
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江苏中杰澳新材料有限公司
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Application filed by 江苏中杰澳新材料有限公司 filed Critical 江苏中杰澳新材料有限公司
Priority to PCT/CN2019/078462 priority Critical patent/WO2020186417A1/en
Priority to JP2019082020A priority patent/JP2020186474A/en
Publication of WO2020186417A1 publication Critical patent/WO2020186417A1/en

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/90—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch

Definitions

  • the invention relates to a crimped textured nylon conductive filament, its manufacturing method and its application, and belongs to the technical field of conductive fibers.
  • nylon POY fibers are electrolessly plated with silver to obtain conductive antibacterial fibers, and then subjected to texturing treatment (crimping deformation processing) to obtain silver-plated nylon DTY fibers.
  • a silver plating method for nylon DTY fiber is disclosed.
  • silver-based antibacterial masterbatch and water-soluble polyester chips are mixed and spun, and the shaped antibacterial polyester pre-oriented yarn is prepared through a special-shaped hole spinning plate, and then subjected to texturing and texturing. Produces low-elastic texturized yarn with excellent wearability, and obtains antibacterial/moisture conductive polyester fiber.
  • polyester pre-oriented yarns containing silver antibacterial masterbatch and water-soluble polyester fibers are subjected to a texturing treatment (crimping texturing treatment) to produce polyester high-elastic yarns, which are then spun After dissolving the fabric and removing the water-soluble polyester, vacuum silver plating is performed to obtain an antibacterial and conductive fabric.
  • a polyester pre-oriented yarn and a preparation method thereof a polyester fiber fabric and a preparation method thereof.
  • carbon nanotubes are dispersed in an ionic liquid, mixed with a highly elastic thermoplastic polymer, and melt-spinned to obtain a highly elastic conductive fiber containing carbon nanotubes.
  • a highly elastic and highly conductive fiber and a manufacturing method thereof are disclosed.
  • the method of melt composite spinning nylon to produce conductive fibers includes: (1) the process of manufacturing the conductive part of the nylon conductive masterbatch; (2) during the spinning process, the conductive part and the non-conductive part are simultaneously melted After the metering pump is correctly metered, it is combined at the outlet of the spinning plate to eject the conductive filament with a composite structure. (3) The process of obtaining the conductive fiber precursor through various processes such as drawing, oiling, and winding. During the stretching process, in order to ensure that the continuous structure of the conductive layer is not damaged, the stretching process needs to be performed at a certain temperature. However, this technique will cause the stretching ratio of the spinning process to become larger, and 100% continuity cannot be guaranteed, resulting in low conductivity of the conductive fiber.
  • the present invention is to overcome the problems existing in the prior art, and its function is: (1) It can solve the problem of insufficient cohesion of conductive filaments during composite processing with other fibers, easy to fluff and affect fabric processing, and there are separate weaving The fabric has hard texture and poor wearability; (2) It can also solve the problem of low conductivity of conductive filaments.
  • the crimped textured nylon conductive filament, its manufacturing method and its application are proposed.
  • the present invention provides a crimped textured nylon conductive filament, its manufacturing method and its application.
  • the essence of the present invention is to perform crimping processing on conductive filaments with a composite structure (conductive part and non-conductive part).
  • a composite structure conductive part and non-conductive part.
  • the mechanism of solving the above-mentioned problem is as follows: by crimping the conductive filament, the continuity of the conductive layer and the conductive performance can be improved.
  • the reason is that (1) because the crimping process includes a heating and plasticizing process, the conductive layer can be rearranged to improve the continuity of the conductive layer, and (2) at the same time, because the crimping process is performed at a low stretch ratio, it can be inferred that the conductive layer The impact of continuity is small. Therefore, in general, after the conductive filament is crimped and processed, not only its weaving performance can be improved, but also the conductive performance can be significantly improved. The crimping of conductive filaments can greatly improve the performance of conductive fiber products.
  • the invention provides a crimped textured nylon conductive filament.
  • the crimped textured nylon conductive filament is obtained by crimping and texturing nylon conductive filaments; the crimping shrinkage rate of the crimped textured nylon conductive filament is 15-60 %, the crimp stability is 40-90%.
  • the conductive filament texturized nylon monofilament fineness of 1.5 ⁇ 6.0dtex, a breaking strength of 2.0 ⁇ 3.5cN / dtex, elongation at break of 15 to 45%, a resistivity of 10 0 ⁇ 10 2 ⁇ ⁇ Cm, the surface resistance is 10 2 ⁇ 10 5 ⁇ .
  • the crimped and deformed nylon conductive filament is composed of a conductive part and a non-conductive part.
  • the conductive part accounts for 10-40% of the total mass of the conductive filament.
  • the nylon conductive filament has a core-sheath structure, and the sheath of the core-sheath structure is the conductive part.
  • the nylon conductive filament is a composite structure, the conductive part is buried in the non-conductive part, and a part of the conductive part is exposed on the surface of the nylon conductive filament.
  • the conductive part is composed of a conductive agent, a processing aid and a polyamide fiber-forming polymer.
  • the conductive agent is conductive carbon black, and the addition amount of the conductive carbon black is 20-35% by mass based on the total mass of the conductive part.
  • the conductive agent is carbon nanotubes, and the addition amount of the carbon nanotubes is 5-15% of the mass based on the total mass of the conductive part.
  • the conductive agent is a composite conductive agent composed of conductive carbon black and carbon nanotubes, and the addition amount of the composite conductive agent is 10-25% by mass based on the total mass of the conductive part.
  • the conductive agent is a light-colored conductive metal oxide (for example, antimony-doped titanium oxide conductive powder), and the added amount of the light-colored conductive metal oxide is based on the entire mass of the conductive part, which is the mass 50 to 80%.
  • a light-colored conductive metal oxide for example, antimony-doped titanium oxide conductive powder
  • the mass ratio of the conductive carbon black to the carbon nanotubes is 10:1-10:10.
  • the present invention provides a method for manufacturing crimped textured nylon conductive filaments, including:
  • the crimped nylon conductive filaments are manufactured according to the procedures of heating, plasticizing, cooling, false twisting, shaping, adding network, oiling, and winding.
  • the heating and plasticizing temperature is 140-195°C
  • the forming temperature is 25-135°C
  • the stretching ratio is 1.05-1.5
  • the value of D/Y is 1.3-2.5
  • the winding speed is 100-800m/ min.
  • the present invention also provides a manufacturing application of using crimped textured nylon conductive filaments for anti-static fabrics, anti-radiation fabrics, fiber fabric type sensors or smart wearable products.
  • the crimped textured nylon conductive filament uses the crimped textured nylon conductive filament.
  • the present invention also provides an anti-static fabric, a radiation-proof fabric, a fiber fabric type sensor or a smart wearable product including the crimped textured nylon conductive filament.
  • the crimped textured nylon conductive filament uses the crimped textured nylon conductive filament.
  • Nylon conductive filaments that have undergone crimping treatment have improved cohesion when they are twisted, double-twisted or network processed with nylon low-elasticity yarns or nylon FDY yarns. Therefore, the influence of fluffing on subsequent fabrics can be avoided.
  • Fig. 1 is a schematic diagram of the core-sheath structure of the crimped textured nylon conductive filament.
  • the sheath is the conductive part.
  • Figure 2 is a schematic diagram of the composite structure of crimped textured nylon conductive filaments.
  • the conductive part is buried in the non-conductive part, and a part of the conductive part is exposed on the surface of the nylon conductive filament.
  • Figure 3 is a conceptual diagram of a manufacturing device (texturing machine) for crimped textured nylon conductive filaments.
  • the present invention is a crimped textured nylon conductive filament, which is a filament obtained by crimping and texturing the nylon conductive filament.
  • the physical properties of the filament will be described below.
  • the crimp shrinkage rate of the crimped textured nylon conductive filament is 15-60%.
  • "crimp shrinkage ratio” has the following meaning.
  • Lg the measured length of the crimped filament when a tension of 500g is applied
  • Lz The length of crimped filament measured by applying 25g tension
  • the crimp stability of the crimped textured nylon conductive filament is 40-90%.
  • "crimp stability” has the following meaning.
  • Lb For the crimped filament whose crimp shrinkage ratio is to be measured, a tension of 2500g is applied first, and then the tension on the crimped filament is reduced to 2.5g.
  • the monofilament fineness of crimped textured nylon conductive filament is generally 1.5 to 6.0 dtex.
  • breaking strength of crimped textured nylon conductive filament is generally 2.0 to 3.5 cN/dtex.
  • breaking strength has the following meaning.
  • the elongation at break of the crimped textured nylon conductive filament is generally 15-45%.
  • “elongation at break” has the following meaning.
  • Nylon texturized resistivity of the conductive filaments is generally ⁇ 10 2 ⁇ ⁇ cm, the surface resistivity is usually 100 10 2 ⁇ 10 5 ⁇ .
  • the resistivity is a value measured in accordance with JIS K7194 (a four-point probe arrangement method for measuring the resistivity of conductive plastics).
  • JIS K7194 a four-point probe arrangement method for measuring the resistivity of conductive plastics.
  • the crimped textured nylon conductive filament of the present invention it is possible to produce a resistance increase of less than 10 1 by washing (a fabric woven with this filament has a resistance after washing 100 times compared with the resistance when it is not washed. Resistance increase).
  • the crimped textured nylon conductive filament of the present invention (the nylon conductive fiber precursor used for texturing processing), for example, by sequentially heating and plasticizing the nylon conductive filament, cooling, false twisting, setting, adding network, oiling, and winding Processed in each process.
  • the following is a detailed description of the raw materials and process.
  • the invention is obtained by preparing a nylon conductive filament by a melt composite spinning process through crimping processing and deformation, and is composed of a conductive part and a non-conductive part.
  • the conductive part generally accounts for 10-40% of the total mass of the conductive filament.
  • the non-conductive part is a polyamide fiber-forming polymer, and the conductive part is composed of a polyamide fiber-forming polymer, a conductive agent and an auxiliary agent.
  • the conductive part and the non-conductive part are processed with composite spinning manufacturing equipment to obtain a composite structure of nylon conductive filament. The following is a detailed description of each raw material.
  • the polyamide fiber-forming polymer is not particularly limited.
  • aliphatic nylons such as nylon 6, nylon 66, nylon 610, nylon 10, nylon 12, or nylon 612 and their copolymers; alicyclic polyamides and aromatic polyamides are also acceptable.
  • These polyamide fiber-forming polymers may be used alone or in appropriate combination.
  • the auxiliary agent can be coupling agent, dispersant, antioxidant, lubricant.
  • the coupling agent may be an aluminate coupling agent, a titanate coupling agent, or a silane coupling agent.
  • the dispersant may be a polyester wax dispersant.
  • the antioxidant may be antioxidant 1010 or antioxidant DLTP.
  • the lubricant can be magnesium stearate or zinc stearate.
  • Conductive masterbatch is prepared by mixing and kneading conductive agent or composite conductive agent, auxiliary agent and polyamide fiber-forming polymer chips, and then through twin-screw extruder and other equipment, extrusion, water cooling, pelletizing and other processes. Pellets.
  • the addition amount is generally 20 to 35% by mass.
  • the conductive agent is carbon nanotubes
  • the addition amount is generally 5 to 15% by mass.
  • the conductive agent is a composite conductive agent composed of conductive carbon black and carbon nanotubes
  • the addition amount is generally 10-25% by mass.
  • the conductive agent is a light-colored conductive metal oxide (for example, antimony-doped titanium oxide conductive powder)
  • the addition amount is generally 50-80% by mass.
  • the conductive masterbatch should be dried in advance, and the water content should be controlled below 100ppm.
  • the mixing temperature is 80°C to 140°C, and the time is 30 to 120 minutes.
  • the extrusion temperature of the twin screw extruder is determined by the melting point of the polyamide fiber-forming polymer.
  • the temperature setting method should be set to 80-100°C in the first zone, 200°C in the second zone, and set the temperature in each zone from the third zone to the discharge port. It is 250 ⁇ 270°C.
  • the aspect ratio of the screw may be 1:25 to 1:50.
  • the polyamide fiber-forming polymer chips and conductive masterbatch are respectively melted and transported by a screw extruder, measured by a metering pump, distributed to the composite spinning plate, and ejected from the spinneret.
  • the side blower is used to cool, solidify, stretch, oil, wire, wind, and complete.
  • the slices of the non-conductive part used should be dried in advance, and the water content should be controlled below 50 ppm.
  • the drying process can use fluid drying bed, drum drying, continuous drying under nitrogen environment, etc.
  • the temperature of the screw extrusion assembly during the spinning process should satisfy the normal melting and conveying of the polymer, and it is better to reach a certain apparent viscosity. What needs special attention here is that in the manufacture of composite spinning, the apparent viscosities of the two spinning melts are similar. This is extremely important in the normal process of spinning. Different polyamide fiber-forming polymers should be carefully explored and confirmed.
  • the process parameters for cooling the filaments include the wind pressure, wind speed, wind temperature and wind humidity of the side blowing.
  • the stretching and winding speed is generally 2000-5000m/min, and the stretching can be carried out with a hot box or a hot roller.
  • the performance indicators of typical carbon black core-sheath nylon conductive filaments are: (1) Single filament fineness is 3.7dtex; (2) Breaking strength is 2.5cN/dtex; (3) Breaking elongation is 55% ; (4) The resistivity is 65 ⁇ cm; (5) The surface resistance is 10 4 ⁇ .
  • the crimping process (3) refers to a process of crimping the conductive filament using a texturing machine.
  • the texturing equipment is composed of a stretch deformation zone, a shaping zone and a winding zone.
  • the process is: original wire frame ⁇ original wire arm ⁇ wire spacer ⁇ wire pressing sheet ⁇ unwinding center ⁇ original wire tube inlet guide wire ⁇ guide wire tube ⁇ thread cutter ⁇ thread splitter ⁇ first roller (FR1) shift Yarn guide ⁇ First roller (FR1) ⁇ Roller arm ⁇ Steel roller ⁇ Top roller ⁇ Lifting rod ⁇ Fixed yarn guide ⁇ Twist stopper ⁇ Anti-vibration yarn guide ⁇ Hot box inlet yarn guide ⁇ Hot box outlet yarn guide ⁇ First heating box (H1) ⁇ Cooling plate inlet guide ⁇ Cooling plate (CP) ⁇ Cooling plate outlet guide ⁇ False twister (FT) ⁇ Tension guide ⁇ Tension sensor ⁇ Second roller (FR2) Thread transfer device ⁇ Second Roller (FR2) ⁇ Second Heating Box (H2) ⁇ Third Roller (FR2)
  • the function of the silk roller is to realize the transmission of the silk.
  • the first roller is for the silk edge.
  • the device has two components, one is silk roller and apron, and the other is silk roller and apron.
  • the advantage of the apron is that the contact area is large, the holding force is large, and the wear of the bearing can be reduced.
  • the disadvantage is that it is easy to damage.
  • the advantage of the top roller is that it is wear-resistant and can be used many times, but its disadvantage is that it has insufficient holding power, which must be compensated by winding on the roller.
  • the better device is the silk feeding roller and the top roller, which must be wound on FR2 twice.
  • the wire transfer distance is generally 5-10mm
  • the thread is pulled to the lifting rod through the first roller, and there is a twist stop device on the top of the lifting rod, which is used to fix the thread on the top of the first heating box to prevent the thread from escaping or twisting back.
  • the traverse thread transfer device before feeding the silk roller its function is to avoid the concentrated wear of the thread to the roller, and to extend the service life of the apron (or press roller).
  • the distance of moving yarn is generally 5-10mm.
  • the first heater is also called a modified hot box, which is a contact heating method.
  • the length of 1000M type is 2.5m, and the length of V type is 2.0m. Its function is to heat the filament into a plasticized state, reduce tensile deformation stress, and make it easier to stretch deformation. It is heated by vacuum-sealed biphenyl steam and electric heating.
  • the function of the cooling plate is to fix the crimp structure of the fiber after twisting. If the cooling is not good (or uneven), the crimp structure formed by the fiber during the twisting process will be uneven, which will affect the uniformity of dyeing and cause fading. On the texturing machine, the strands are cooled by cooling plates.
  • the function of the false twister is to produce mechanical twisting stress for deformation processing. It is the core of the texturing machine. It twists and untwists the thread through the turning of the friction disc to form a false twist (usually "Z" twist).
  • friction disks are divided into floppy disks (polyurethane PU disks, etc.) and hard disks (ceramic disks, sand disks, etc.). Floppy disks have high friction coefficient, soft surface, small damage to the wire, and "less snow", but they have short service life and high cost; The hard disk is the opposite of a floppy disk.
  • the speed of the middle roller is the so-called processing speed.
  • it is required that its apron holder should be strong.
  • the second heater is also called the stereotyped hot box, which is non-contact type. Its main function is to eliminate the internal stress of the textured yarn and improve the dimensional stability of the fiber. If the temperature of the second heating box is increased, the crimp rate (elasticity) of the finished fiber will decrease, the boiling water shrinkage rate will decrease, the dimensional stability will be improved, and the residual torque of the yarn will decrease.
  • the requirements for holding aprons are relatively high, but lower than those of W2 and W1. Its function is to form OF2 (that is, setting overfeeding), perform a relatively relaxed state setting, eliminate most of the internal stress in the deformation, make the bulkiness moderate, moderate elasticity, normal boiling water shrinkage, and good dimensional stability.
  • the overfeed ratio between the second roller A and the third roller, that is, the setting overfeed, mainly controls the setting of the yarn in a relatively relaxed state.
  • the main function of the tanker is to add appropriate oil to the low-stretch yarn. Its function is to improve the bundling of the fiber, increase the smoothness of the fiber, improve the antistatic property of the fiber, and meet the requirements of the subsequent weaving.
  • the oiling rate the ratio of the amount of oil applied to the total weight of the fiber, is generally about 2%.
  • the speed of the tanker also affects its oil rate.
  • the thread detector in the texturing machine is also called a broken thread detector or a sensor, which automatically cooperates with the thread cutter (also called the thread cutter).
  • the thread cutter also called the thread cutter.
  • the function of the sucker is to help lift the head, doffing and stripping.
  • the smoking device is installed at the exit of the first heating box, and its function is to absorb various gas volatiles generated by the heating of the thread in the first heating box, and prevent the heating box from scaling.
  • the process conditions are mainly processing speed (YS), draft ratio (DR), speed ratio (D/Y, the ratio of the surface speed of the friction disc to the speed of the thread leaving the false twister), K value (untwisting tension and adding The ratio of twist tension) and three overfeed OF2%, OF2A%, OF3% and two hot box temperatures, namely the temperature of the first heating box (H1) and the temperature of the second heating box (H2).
  • the temperature of the first heating box is the deformation temperature of the fiber. It is required that at this temperature, the fiber should not stick while being plasticized.
  • the second heating box is also called the shaping heating box, which is non-contact air heating, generally heated by a heat medium, and used to shape the false twisted yarn. As the temperature of the second heating box increases, the crimp rate (elasticity) of the thread will decrease.
  • the temperature of the first heating box is about 160°C to 185°C, and it is heated by a combination of vacuum-sealed biphenyl steam and electric heating.
  • the shaping area is mainly the second heating box, also called the shaping hot box, which is heated by non-contact air and heated by a heat medium.
  • Its temperature is about 140°C (about 30°C lower than the temperature of the first heating box). Its function is to shape the processed thread, so if the temperature of the second heating box is increased, the crimp rate (elasticity) of the thread will decrease, and the boiling water shrinkage rate will decrease. Therefore, when processing high-elastic yarns, just turn off the second heating box.
  • a cooling plate which is mainly used to fix the thermal deformation of the wire rod and reduce its thermoplasticity, so that the wire rod has a certain rigidity, which is conducive to the transmission of twist. If the cooling is not good (or uneven), the crimp structure formed during the false twisting process of the fiber will not be uniform, which will affect the uniformity of dyeing and discoloration. For example, using metal plate and air cooling to cool the filament to 80°C, the length of the cooling plate is 1.5m.
  • the calculated draw ratio is based on the denier of the original yarn/the denier of the processed yarn, and considering the critical stretching factor, the actual draw ratio is less than or equal to the calculated draw ratio multiplied by 1.1.
  • the strength of the thread increases and the elongation decreases.
  • a low draw ratio will cause the twist under the false twister to not be completely eliminated. It is possible that the fibers stick together to form a tight spot. If the draft ratio is too high, the thread under the false twister will be looser. Because of the excessive tension, it is easy to form wool, so when setting the draft ratio, in addition to the index of strength and elongation, attention should be paid to observe the change of tension, so that the wool and tight spots are less.
  • the processing speed is the speed of the second roller. Generally, the processing speed is 15%-20% lower than the critical speed, and the more suitable speed is about 300-500m/min.
  • the higher the processing speed the higher the false-twisting tension of the thread, the higher the contact pressure between the thread and the friction disc, the smaller the slip between the thread discs, the higher the crimp rate and the crimp stability, but the appearance of wool.
  • the three overfeeds related to the processing speed are OF2%, OF2A%, OF3%, namely OF2% (setting overfeed), OF2A% and OF3% (winding overfeed). The overfeed rate will affect the strength and elongation of the silk and the rate of stretching.
  • OF2% will adjust the tension of the second heating box, which is to control the effect of heat setting and affect the bulkiness of the thread, but if the ratio is set too high, it will cause the thread to shake after being pulled out of the FR2 roller.
  • the strip produces abnormalities such as loose circles and stains.
  • OF3% mainly adjusts the roll tension and determines the quality of the package forming.
  • the formula: OF3% (FR2A-WR)*100/FR2A.
  • OF2A% is the tension that controls the air pressure of the network. There is a network nozzle between FR2 and FR2A, so the tension directly affects the number of networks.
  • the D/Y ratio refers to the ratio of the surface speed of the friction disc to the speed of the thread leaving the false twister (friction disc speed/FR2). Within a certain range, its change has almost no effect on the fiber's crimp rate, crimp stability, strength, elongation and other physical indicators, and is related to the tension before and after the false twister during processing.
  • the tension before false twisting means T1 tacisting tension
  • the tension after false twisting means T2 untwisting tension.
  • T1 twisting tension
  • T2 untwisting tension
  • the value of D/Y is generally controlled between 1.3 and 2.5. Within this range, with the change of the D/Y ratio, the physical indicators such as the crimp performance and strength of the low-stretch yarn are almost unchanged, which is beneficial to stable production.
  • the most suitable process parameters are basically: the heating and plasticizing temperature is 145 ⁇ 195°C, the setting temperature is 25 ⁇ 135°C, and the stretching ratio is 1.05 ⁇ 1.5, the value of D/Y is 1.3-2.5, and the winding speed is 100-800m/min.
  • the "fiber combination” here includes not only molded products such as fabrics (for example, cloth or non-woven fabrics), but also 3D fiber molded products.
  • the crimped textured nylon conductive filament of the present invention has good conductivity and flexibility, and can be used in the manufacture of smart wearable products and fiber-type sensors.
  • the crimped and deformed nylon conductive filament of the present invention has a low resistance value, has excellent electromagnetic wave and magnetic shielding performance, and can be applied to the production of radiation-proof clothing.
  • the crimped textured conductive filament of the present invention has better subsequent weaving performance, and can be used to manufacture conductive filaments, double filaments (twisted), double twisted filaments (also called yarns), multifilaments and composite twisted filaments .
  • the application of the crimped textured nylon conductive filament of the present invention can be roughly divided into two categories. One is to use it as a raw material to directly produce fabrics or non-woven fabrics. The other is that the raw material fibers of the crimped textured nylon conductive filament and the non-conductive fiber are twisted, double-twisted and then woven to form a fiber functional material body. Including the crimped textured nylon conductive filament of the present invention, the production of any one of anti-static fabric, anti-radiation fabric, fiber fabric type sensor, and smart wear is within the scope of application of the present invention.
  • the present invention is a technology that uses conductive fiber precursors prepared by a composite spinning process to perform crimp texturing treatment.
  • the crimped nylon conductive filament, the conductive yarn and the products thereof of the present invention have good electrical conductivity, heat generation, anti-static, electromagnetic wave shielding, thermal conductivity and other characteristics, and are more convenient to process and comfortable to wear.
  • the crimped nylon conductive filaments, conductive yarns and finished products thereof of the present invention have excellent durability with the above-mentioned characteristics, and also have good softness, touch (or texture), usability, processability and other characteristics.
  • the crimped nylon conductive filaments, conductive yarns and their finished products of the present invention such as antistatic or electromagnetic wave shielding clothing applications (such as work clothes or uniforms), interior decoration applications (such as curtains) , Carpets, wall coating materials, spacers), bag filters, machine covers, photocopier brushes, electromagnetic wave protection industrial materials, etc.
  • antistatic or electromagnetic wave shielding clothing applications such as work clothes or uniforms
  • interior decoration applications such as curtains
  • bag filters machine covers, photocopier brushes, electromagnetic wave protection industrial materials, etc.
  • crimped textured nylon conductive filaments, conductive yarns and finished products can be produced more flexibly. In short, this manufacturing method has outstanding practicality.
  • the materials were mixed in advance (mixing temperature: 120°C, mixing time: 40 min). Subsequently, a twin-screw extruder was used for melting to obtain a conductive masterbatch with a carbon black conductive agent content of 30 wt%, which was sufficiently dried.
  • the dried non-conductive part PA6 sliced 80 kg and the conductive master batch were put into a screw extruder to melt, and the melt was conveyed. After the melt is accurately measured in each metering pump, it is poured into the sheath-core type outer guide composite spinning machine in a certain proportion (the conductive part is 25wt% of the total weight of the fiber) and mixed, and ejected from the spinneret to form a melt Trickle.
  • the temperature of the composite spinning box is 289°C.
  • the thin flow of melt is cooled and solidified by cooling air to form primary fibers.
  • the wind pressure of the side air supply is 150 Pa
  • the wind speed is 1.0 m/s
  • the wind temperature is 18°C
  • the wind humidity is 80%.
  • the tow After cooling, the tow is oiled through the yarn guide, and the winding process is reached through the channel, and then the running direction of the yarn is changed through the upper and lower yarn guides of the tanker, after adjusting the tension, it enters the winding machine to make a cake (winding speed is 3500m /min).
  • a 160D/32f sheath-core outer conductive PA6 conductive fiber (the sheath is the carbon black conductive part) is produced.
  • the conductive part of the conductive fiber accounts for 25 wt%
  • the conductive carbon black accounts for 7.5 wt% of the total fiber mass
  • the resistance measured by the high resistance measuring instrument is 6 ⁇ 10 5 ⁇ /cm
  • the resistivity is 75 ⁇ cm.
  • this manufacturing example it is a sheath-core type manufacturing example completed by using a sheath-core type outer guide composite spinning machine.
  • a composite type yarn can be manufactured using an in-line and outer guide three-wing composite spinning machine.
  • nylon conductive filaments were first produced.
  • the obtained nylon conductive filament is a composite structure (contains a conductive part and a non-conductive part, the conductive part is a trilobal type and is buried in the non-conductive part).
  • the fineness of the filament is 110 dtex/32f
  • the breaking strength is 2.6 cN/dtex
  • the breaking elongation is 75%
  • the high voltage resistance is 5 ⁇ 10 5 ⁇ /cm
  • the surface resistance is 10 5 ⁇ .
  • the process parameters of the crimping process are: the temperature of the first heating box is 180°C, the elongation ratio is 1.2, D/Y is 1.8, the temperature of the second heating box is 130°C, the combination of friction discs is 3-5-1, and the shape is insufficient
  • the feed rate is -7.5%
  • the winding underfeed rate is -4.5%
  • the processing speed is 380m/min.
  • the fiber index of the obtained crimped textured nylon conductive filament is 90dtex/32f, breaking strength of 3.0cN/dtex, breaking elongation of 25%, crimp shrinkage of 22%, crimp stability of 75%, oil content
  • the rate is 2.5%
  • the boiling water shrinkage rate is 4.5%
  • the high voltage resistance is 2 ⁇ 10 6 ⁇ /cm
  • the surface resistance is 10 5 ⁇ .
  • a core sheath type nylon conductive filament was produced.
  • the fineness of the filament is 86dtex/16f
  • the breaking strength is 2.5cN/dtex
  • the breaking elongation is 65%
  • the high voltage resistance is 1.5 ⁇ 10 6 ⁇ /cm
  • the surface resistance is 10 3 ⁇ .
  • the process parameters of the crimping process are as follows: the temperature of the first heating box is 175°C, the elongation ratio is 1.05, the D/Y is 1.9, the second heating box is closed or not installed, the combination of friction disc is 3-5-1, and the shape is insufficient.
  • the feed rate is -7.5%, the winding underfeed rate is -4.5%, and the processing speed is 500m/min.
  • the fiber index of the obtained carbon black core sheath crimped textured nylon conductive filament is 78dtex/16f, breaking strength of 2.9cN/dtex, breaking elongation of 30%, crimp shrinkage rate of 45%, and crimp stability It is 71%, the oil content is 2.5%, the boiling water shrinkage is 6.5%, the high-voltage resistance is 8.5 ⁇ 10 5 ⁇ /cm, and the surface resistance is 10 3 ⁇ .
  • nylon conductive filaments were first produced.
  • the nylon conductive filament has a fineness of 86dtex/16f, a breaking strength of 2.5cN/dtex, a breaking elongation of 65%, a high voltage resistance of 1.5 ⁇ 10 6 ⁇ /cm, and a surface resistance of 10 4 ⁇ .
  • the process parameters of the crimp texturing process are: the deformation temperature is 170°C, the elongation ratio is 1.2, and the D/Y is 1.9.
  • the two conductive filaments are combined in the direction of Z twist and S twist respectively through a false twister. Feeding -6.8%, winding underfeeding is -3.1%, processing speed is 450m/min.
  • the obtained carbon black core sheath crimped textured nylon conductive filament has a fineness of 145dtex/32f, a breaking strength of 3.1cN/dtex, a breaking elongation of 28%, a crimp shrinkage of 42%, and crimp stability.
  • the oil content is 75%, the oil content is 3.0%, the boiling water shrinkage is 6.5%, the high-voltage resistance is 8.5 ⁇ 10 5 ⁇ /cm, the surface resistance is 10 4 ⁇ , and the torque is almost no.
  • the raw materials of the twisted yarn are 20D/4f crimped textured nylon conductive filament and 50D/24f nylon FDY. Twist these two kinds of yarns and add a network to obtain a 20D/4f+50D/24f nylon composite conductive network yarn. As a result, it was proved that the hairline effect was not excellent on the bobbin.
  • Example 2 Using the 78dtex/16f carbon black core-sheath type crimped textured nylon conductive filament obtained in Example 2 to knit socks with a length of 50 cm on a hosiery machine. It can be seen from the appearance that the fabric is neat and beautiful, with a soft hand feeling, and the measurement result of the surface resistance is 10 3 ⁇ . After washing with water and detergent for 30 times, the surface resistance decreased slightly, basically staying at 10 3 to 4 ⁇ .
  • the raw material of the twisted yarn is not the product of the present invention, but a conductive fiber of 20D/4f nylon conductive filament and 50D/24f nylon FDY on the market. Twist these two kinds of yarns and add a network to obtain 20D/4f+50D/24f nylon composite conductive network yarn. As a result, it was found that hairs were easily formed on the bobbin, which did not achieve the desired effect.
  • the raw material used is not the product of the present invention, but a 78dtex/16f nylon conductive fiber precursor on the market, which is directly knitted on a hosiery machine with a length of 50cm. It can be seen from the appearance that the fabric is rough, the hand feels hard, and the measurement result of the surface resistance is 10 3 ⁇ . After washing with water and detergent for 30 times, the surface resistance dropped significantly, with a value of 10 4 to 5 ⁇ .

Abstract

The present invention relates to a crimped conductive polyamide filament, and a manufacturing method therefor and application thereof. The crimped conductive polyamide filament is obtained by processing a conductive polyamide filament by means of texturing by crimping, characterized in that the crimp shrinkage rate is 15-60% and the crimp stability is 40-90%. The technical process of texturing processing involves: subjecting the conductive fiber protofilament to heating and plasticizing by means of a texturing hot-box, cooling same by means of a cooling plate, twisting and unwinding same by means of a false twister, and setting, interlacing, oiling, winding, inspecting, and packaging same. The crimped conductive polyamide filament is conducive to subsequent blended weaving or is used alone for weaving, can exhibit the human body experience effects of being soft and padded, and can be widely used in: 1) calming the nerves and aiding sleep, 2) improving blood circulation, 3) removing static electricity, 4) dust removal and filtration, 5) seawater aquaculture, 6) freshwater aquaculture, 7) preparing water/air that contains negative ions, 8) electric heating, 9) low-voltage wires, and 10) signal transduction.

Description

卷曲变形锦纶导电长丝、其制造方法及其应用Crimped textured nylon conductive filament, its manufacturing method and application 技术领域Technical field
本发明是卷曲变形锦纶导电长丝、其制造方法及其应用，属于导电纤维的技术领域。The invention relates to a crimped textured nylon conductive filament, its manufacturing method and its application, and belongs to the technical field of conductive fibers.
背景技术Background technique
现存的导电长丝，表面刚直平滑，与其他纤维混纺时的抱合力小，容易出现起毛现象，所以不利于导电纤维织物的加工。如果在织物加工时将其单独使用，纤维手感较硬，导致穿着性差。如使用这样的纤维织袜，受压力和摩擦影响，时间长的话导电层部分会有剥落的可能，影响其导电性能和电流的流动。就现阶段而言，由卷曲变形锦纶导电长丝织造的制成品还未在市面上出现。Existing conductive filaments have a straight and smooth surface, and have low cohesion when blended with other fibers, and are prone to fluffing, so they are not conducive to the processing of conductive fiber fabrics. If it is used alone during fabric processing, the fiber feels hard, resulting in poor wearability. If you use such fiber knitting socks, it will be affected by pressure and friction, and the conductive layer may peel off over a long period of time, which will affect its conductivity and current flow. At this stage, finished products woven from crimped textured nylon conductive filaments have not yet appeared on the market.
在中国专利公开号第106758179号中，对锦纶POY纤维进行化学镀银，得到导电性抗菌纤维，再进行加弹处理(卷曲变形加工处理)，即得镀银后的锦纶DTY纤维。公开了一种锦纶DTY纤维的镀银方法。在中国专利公开号第102560729号中，将银系抗菌母粒与水溶性聚酯切片进行混合纺丝，并通过异形孔纺丝板制备得到异形抗菌涤纶预取向丝，再经过加弹变形处理，生产出穿着性优良的低弹变形丝，得到具有抗菌/导湿性涤纶纤维。公开了一种抗菌导湿型涤纶纤维、其制备方法及应用。在中国专利公开号第105887240号中，将包含银系抗菌母粒与水溶性涤纶纤维的涤纶预取向丝，经过加弹处理(卷曲变形处理)生产出涤纶高弹丝，将其进行纺织，随后将织物溶解，去除水溶性涤纶后，进行真空镀银，从而得到抗菌、导电织物。公开了一种涤纶预取向丝及其制备方法，聚酯纤维织物及其制备方法。中国专利号第102953137号中，将碳纳米管在离子液体中分散后，与高弹性热塑性聚合物混合，进行熔融纺丝得到一种含有碳纳 米管的高弹性导电纤维。公开一种高弹性高导电纤维及其制作方法。In Chinese Patent Publication No. 106758179, nylon POY fibers are electrolessly plated with silver to obtain conductive antibacterial fibers, and then subjected to texturing treatment (crimping deformation processing) to obtain silver-plated nylon DTY fibers. A silver plating method for nylon DTY fiber is disclosed. In Chinese Patent Publication No. 102560729, silver-based antibacterial masterbatch and water-soluble polyester chips are mixed and spun, and the shaped antibacterial polyester pre-oriented yarn is prepared through a special-shaped hole spinning plate, and then subjected to texturing and texturing. Produces low-elastic texturized yarn with excellent wearability, and obtains antibacterial/moisture conductive polyester fiber. Disclosed is an antibacterial and moisture-conducting polyester fiber, its preparation method and application. In Chinese Patent Publication No. 105887240, polyester pre-oriented yarns containing silver antibacterial masterbatch and water-soluble polyester fibers are subjected to a texturing treatment (crimping texturing treatment) to produce polyester high-elastic yarns, which are then spun After dissolving the fabric and removing the water-soluble polyester, vacuum silver plating is performed to obtain an antibacterial and conductive fabric. Disclosed are a polyester pre-oriented yarn and a preparation method thereof, a polyester fiber fabric and a preparation method thereof. In Chinese Patent No. 102953137, carbon nanotubes are dispersed in an ionic liquid, mixed with a highly elastic thermoplastic polymer, and melt-spinned to obtain a highly elastic conductive fiber containing carbon nanotubes. A highly elastic and highly conductive fiber and a manufacturing method thereof are disclosed.
在现有技术中，将锦纶进行熔融复合纺丝，生产导电纤维的方法包括：(1)制造锦纶导电母粒导电部分的工艺，(2)纺丝过程中，同时熔融导电部分与非导电部分，计量泵正确计量后，在纺丝板出口合并，将具有复合结构的导电丝喷出的工艺，(3)通过拉伸、上油、卷绕等各道工序得到导电纤维原丝的工艺。拉伸过程中，为保证导电层的连续结构不被破坏，拉伸过程需要在一定温度下进行。但是，这种手法会导致纺丝过程的拉伸倍率变大，无法保证100％的连续性，造成导电纤维的导电性能低下。In the prior art, the method of melt composite spinning nylon to produce conductive fibers includes: (1) the process of manufacturing the conductive part of the nylon conductive masterbatch; (2) during the spinning process, the conductive part and the non-conductive part are simultaneously melted After the metering pump is correctly metered, it is combined at the outlet of the spinning plate to eject the conductive filament with a composite structure. (3) The process of obtaining the conductive fiber precursor through various processes such as drawing, oiling, and winding. During the stretching process, in order to ensure that the continuous structure of the conductive layer is not damaged, the stretching process needs to be performed at a certain temperature. However, this technique will cause the stretching ratio of the spinning process to become larger, and 100% continuity cannot be guaranteed, resulting in low conductivity of the conductive fiber.
因此，本发明是为了克服现有技术上存在的问题，其作用为，(1)可以解决导电长丝在与其他纤维进行复合加工时的抱合力不够，容易起毛影响织物加工，并且存在单独织造的织物质感较硬、穿着性差等问题；(2)也可解决导电长丝的导电性能低下的问题。提出卷曲变形锦纶导电长丝、其制造方法及其应用。Therefore, the present invention is to overcome the problems existing in the prior art, and its function is: (1) It can solve the problem of insufficient cohesion of conductive filaments during composite processing with other fibers, easy to fluff and affect fabric processing, and there are separate weaving The fabric has hard texture and poor wearability; (2) It can also solve the problem of low conductivity of conductive filaments. The crimped textured nylon conductive filament, its manufacturing method and its application are proposed.
发明内容Summary of the invention
为了解决所述技术问题，本发明提供了一种卷曲变形锦纶导电长丝、其制造方法及其应用。In order to solve the technical problem, the present invention provides a crimped textured nylon conductive filament, its manufacturing method and its application.
本发明其本质是对拥有复合结构(导电部分和非导电部分)的导电长丝，进行卷曲变形加工处理。此外，所述公开的专利公报内，没有任何一份有针对有复合结构(导电部分和非导电部分)的导电长丝进行卷曲变形加工处理的内容。The essence of the present invention is to perform crimping processing on conductive filaments with a composite structure (conductive part and non-conductive part). In addition, there is nothing in the published patent gazette regarding the crimping processing of conductive filaments with composite structures (conductive parts and non-conductive parts).
根据本发明解决所述课题的作用机制是以下几点：对导电长丝进行卷曲加工，可以提高导电层的连续性，提高导电性能。其理由为，(1)由于卷曲加工包括加热塑化过程，可以重新排列导电层，提高导电层的连续性，(2)同时，由于卷曲加工是以低拉伸倍率进行，可以推测对导电层的连续性的影响小。因此， 总的来说，该导电长丝在经卷曲变形加工后，不仅可以提高其织布性能，导电性能也会有明显提升。导电长丝的卷曲变形加工，可以大幅提高导电纤维产品的性能。According to the present invention, the mechanism of solving the above-mentioned problem is as follows: by crimping the conductive filament, the continuity of the conductive layer and the conductive performance can be improved. The reason is that (1) because the crimping process includes a heating and plasticizing process, the conductive layer can be rearranged to improve the continuity of the conductive layer, and (2) at the same time, because the crimping process is performed at a low stretch ratio, it can be inferred that the conductive layer The impact of continuity is small. Therefore, in general, after the conductive filament is crimped and processed, not only its weaving performance can be improved, but also the conductive performance can be significantly improved. The crimping of conductive filaments can greatly improve the performance of conductive fiber products.
应用上，近年来，伴随电子技术以及生命科学的发展，智能穿戴、纤维型生物传感已成为热门技术应用及消费市场需求领域，对机能性导电和防静电织物的需求不断上升，同时对导电性织物的柔软性和穿着性提出了更高的要求。复合结构的导电纤维，由于其导电性优良，生产制造相对容易，生产成本容易控制，伴随智能穿戴、纤维型生物传感应用的不断扩大，这个产业将会有大幅度的发展。In terms of application, in recent years, with the development of electronic technology and life sciences, smart wearables and fiber-based biosensors have become popular technology applications and consumer market demand fields. The demand for functional conductive and anti-static fabrics continues to rise. The softness and wearability of sexual fabrics put forward higher requirements. The conductive fiber of composite structure, due to its excellent conductivity, relatively easy to manufacture, and easy to control the production cost. With the continuous expansion of smart wearable and fiber-based biosensing applications, this industry will have a substantial development.
本发明的具体内容如下：The specific content of the present invention is as follows:
本发明提供了一种卷曲变形锦纶导电长丝，所述卷曲变形锦纶导电长丝是对锦纶导电长丝进行卷曲变形加工处理得到；所述卷曲变形锦纶导电长丝的卷曲收缩率为15～60％，卷曲稳定度为40～90％。The invention provides a crimped textured nylon conductive filament. The crimped textured nylon conductive filament is obtained by crimping and texturing nylon conductive filaments; the crimping shrinkage rate of the crimped textured nylon conductive filament is 15-60 %, the crimp stability is 40-90%.
进一步，所述卷曲变形锦纶导电长丝的单丝细度为1.5～6.0dtex，断裂强度为2.0～3.5cN/dtex，断裂伸长率为15～45％，电阻率为10 0～10 2Ω·cm，表面电阻为10 2～10 5Ω。 Further, the conductive filament texturized nylon monofilament fineness of 1.5 ~ 6.0dtex, a breaking strength of 2.0 ~ 3.5cN / dtex, elongation at break of 15 to 45%, a resistivity of 10 0 ~ 10 2 Ω ·Cm, the surface resistance is 10 2 ～10 5 Ω.
进一步，所述卷曲变形锦纶导电长丝，是由导电部分和非导电部分构成。Further, the crimped and deformed nylon conductive filament is composed of a conductive part and a non-conductive part.
进一步，导电部分占导电长丝总质量的10～40％。Further, the conductive part accounts for 10-40% of the total mass of the conductive filament.
进一步，所述锦纶导电长丝为芯鞘结构，所述芯鞘结构的鞘层为所述导电部分。Further, the nylon conductive filament has a core-sheath structure, and the sheath of the core-sheath structure is the conductive part.
进一步，所述锦纶导电长丝为复合结构，所述导电部分被埋入所述非导电部分中，并且导电部分中的一部分在所述锦纶导电长丝的表面露出。Further, the nylon conductive filament is a composite structure, the conductive part is buried in the non-conductive part, and a part of the conductive part is exposed on the surface of the nylon conductive filament.
进一步，所述导电部分是由导电剂、加工助剂和聚酰胺成纤聚合物构成。Further, the conductive part is composed of a conductive agent, a processing aid and a polyamide fiber-forming polymer.
进一步，所述导电剂为导电炭黑，所述导电炭黑的添加量，以所述导电部分的全部质量为基准，为质量的20～35％。Further, the conductive agent is conductive carbon black, and the addition amount of the conductive carbon black is 20-35% by mass based on the total mass of the conductive part.
进一步，所述导电剂为碳纳米管，所述碳纳米管的添加量，以所述导电部分的全部质量为基准，为质量的5～15％。Further, the conductive agent is carbon nanotubes, and the addition amount of the carbon nanotubes is 5-15% of the mass based on the total mass of the conductive part.
进一步，所述导电剂是由导电炭黑和碳纳米管构成的复合导电剂，所述复合导电剂的添加量，以所述导电部分的全部质量为基准，为质量的10～25％。Further, the conductive agent is a composite conductive agent composed of conductive carbon black and carbon nanotubes, and the addition amount of the composite conductive agent is 10-25% by mass based on the total mass of the conductive part.
进一步，所述导电剂为浅色导电金属氧化物(例如：掺锑氧化钛导电粉)，所述浅色导电金属氧化物的添加量，以所述导电部分的全部质量为基准，为质量的50～80％。Further, the conductive agent is a light-colored conductive metal oxide (for example, antimony-doped titanium oxide conductive powder), and the added amount of the light-colored conductive metal oxide is based on the entire mass of the conductive part, which is the mass 50 to 80%.
进一步，所述复合导电剂，所述导电炭黑与所述碳纳米管的质量比(所述导电炭黑：所述碳纳米管)为10：1～10：10。Further, in the composite conductive agent, the mass ratio of the conductive carbon black to the carbon nanotubes (the conductive carbon black: the carbon nanotubes) is 10:1-10:10.
又一方面，本发明提供了一种卷曲变形锦纶导电长丝的制造方法，包括：In another aspect, the present invention provides a method for manufacturing crimped textured nylon conductive filaments, including:
对锦纶导电长丝，依次按照加热塑化、冷却、假捻、定型、加网络、上油、卷绕的工序，制造卷曲变形锦纶导电长丝。For nylon conductive filaments, the crimped nylon conductive filaments are manufactured according to the procedures of heating, plasticizing, cooling, false twisting, shaping, adding network, oiling, and winding.
在所述工序中，加热塑化温度为140～195℃，成形温度为25～135℃，拉伸倍率为1.05～1.5，D/Y的数值为1.3～2.5，卷绕速度为100～800m/min。In the process, the heating and plasticizing temperature is 140-195°C, the forming temperature is 25-135°C, the stretching ratio is 1.05-1.5, the value of D/Y is 1.3-2.5, and the winding speed is 100-800m/ min.
第三方面，本发明还提供了一种将卷曲变形锦纶导电长丝用于防静电织物、防辐射织物、纤维织物型传感器或者智能穿戴产品的生产制造用途。In the third aspect, the present invention also provides a manufacturing application of using crimped textured nylon conductive filaments for anti-static fabrics, anti-radiation fabrics, fiber fabric type sensors or smart wearable products.
进一步，所述卷曲变形锦纶导电长丝采用所述的卷曲变形锦纶导电长丝。Further, the crimped textured nylon conductive filament uses the crimped textured nylon conductive filament.
第四方面，本发明还提供了一种包含卷曲变形锦纶导电长丝在内的防静电织物、防辐射织物、纤维织物型传感或者智能穿戴的产品。In a fourth aspect, the present invention also provides an anti-static fabric, a radiation-proof fabric, a fiber fabric type sensor or a smart wearable product including the crimped textured nylon conductive filament.
进一步，所述卷曲变形锦纶导电长丝采用所述的卷曲变形锦纶导电长丝。Further, the crimped textured nylon conductive filament uses the crimped textured nylon conductive filament.
本发明的有益效果是如下：The beneficial effects of the present invention are as follows:
(1)经卷曲变形处理过的锦纶导电长丝，在与锦纶低弹丝或锦纶FDY丝进行交捻、双捻加工或者网络加工时抱合力提高。因此，可以避免出现起毛等对后续织物造成的影响。(1) Nylon conductive filaments that have undergone crimping treatment have improved cohesion when they are twisted, double-twisted or network processed with nylon low-elasticity yarns or nylon FDY yarns. Therefore, the influence of fluffing on subsequent fabrics can be avoided.
(2)在卷曲变形加工过程中，导电纤维的导电部分经过加热塑化，导电结构的连续性变得更好，导电性能得到提高。因此，可应用于对导电性要求更高的产品。(2) During the crimping process, the conductive part of the conductive fiber is heated and plasticized, the continuity of the conductive structure becomes better, and the conductive performance is improved. Therefore, it can be applied to products requiring higher conductivity.
(3)使用卷曲变形处理过的锦纶导电长丝直接进行织布加工，生产的织物在保持原本良好导电性的同时，手感柔软穿着舒适。(3) Using crimped conductive nylon filaments to directly perform weaving processing, the fabric produced is soft and comfortable to wear while maintaining the original good conductivity.
附图说明Description of the drawings
下面结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the drawings and embodiments.
图1是卷曲变形锦纶导电长丝的芯鞘结构概略图。图中，鞘层为导电部分。Fig. 1 is a schematic diagram of the core-sheath structure of the crimped textured nylon conductive filament. In the figure, the sheath is the conductive part.
图2是卷曲变形锦纶导电长丝的复合结构概略图。图中，导电部分被埋入非导电部分中，并且导电部分中的一部分在锦纶导电长丝的表面露出。Figure 2 is a schematic diagram of the composite structure of crimped textured nylon conductive filaments. In the figure, the conductive part is buried in the non-conductive part, and a part of the conductive part is exposed on the surface of the nylon conductive filament.
图3是卷曲变形锦纶导电长丝的制造装置(加弹机)概念图。Figure 3 is a conceptual diagram of a manufacturing device (texturing machine) for crimped textured nylon conductive filaments.
图中：1导电部分、2非导电部分。In the figure: 1 conductive part, 2 non-conductive part.
具体实施方式detailed description
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。The present invention will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, which merely illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.
本发明是卷曲变形锦纶导电长丝，是对锦纶导电长丝进行卷曲变形加工处理后得到的长丝。以下对该长丝的物性进行说明。The present invention is a crimped textured nylon conductive filament, which is a filament obtained by crimping and texturing the nylon conductive filament. The physical properties of the filament will be described below.
名词解释:Glossary:
(卷曲收缩率)(Curl shrinkage rate)
卷曲变形锦纶导电长丝的卷曲收缩率为15～60％。这里，“卷曲收缩率”具 有以下意义。The crimp shrinkage rate of the crimped textured nylon conductive filament is 15-60%. Here, "crimp shrinkage ratio" has the following meaning.
【公式1】【Formula 1】
Figure PCTCN2019078462-appb-000001
Figure PCTCN2019078462-appb-000001
这里，Lg：施加500g的张力，测量出的卷曲长丝长度Here, Lg: the measured length of the crimped filament when a tension of 500g is applied
Lz：施加25g的张力，测量出的卷曲长丝长度Lz: The length of crimped filament measured by applying 25g tension
(卷曲稳定度)(Curl stability)
卷曲变形锦纶导电长丝卷曲稳定度为40～90％。这里，“卷曲稳定度”具有以下意义。The crimp stability of the crimped textured nylon conductive filament is 40-90%. Here, "crimp stability" has the following meaning.
【公式2】[Formula 2]
Figure PCTCN2019078462-appb-000002
Figure PCTCN2019078462-appb-000002
这里，Lb：对要测量卷曲收缩率的卷曲长丝，先施加2500g的张力，然后再将卷曲长丝上的张力减少到2.5g的情况下测量的长度。Here, Lb: For the crimped filament whose crimp shrinkage ratio is to be measured, a tension of 2500g is applied first, and then the tension on the crimped filament is reduced to 2.5g.
(单丝纤维细度)(Monofilament fiber fineness)
卷曲变形锦纶导电长丝的单丝细度一般为1.5～6.0dtex。The monofilament fineness of crimped textured nylon conductive filament is generally 1.5 to 6.0 dtex.
(断裂强度)(Breaking strength)
卷曲变形锦纶导电长丝的断裂强度一般为2.0～3.5cN/dtex。这里，“断裂强度”具有以下意义。The breaking strength of crimped textured nylon conductive filament is generally 2.0 to 3.5 cN/dtex. Here, "breaking strength" has the following meaning.
【公式3】[Formula 3]
Figure PCTCN2019078462-appb-000003
Figure PCTCN2019078462-appb-000003
(纤维能承受的最大拉伸力与纤维实际细度的比值)(The ratio of the maximum tensile force that the fiber can bear to the actual fineness of the fiber)
(断裂伸长率)(Elongation at break)
卷曲变形锦纶导电长丝的断裂伸长率一般为15～45％。这里，“断裂伸长率”具有以下意义。The elongation at break of the crimped textured nylon conductive filament is generally 15-45%. Here, "elongation at break" has the following meaning.
Figure PCTCN2019078462-appb-000004
Figure PCTCN2019078462-appb-000004
(纤维拉伸至断裂时的长度与原长的比值)(The ratio of the length of the fiber stretched to the break to the original length)
(电阻率)(Resistivity)
卷曲变形锦纶导电长丝的电阻率一般为10 0～10 2Ω·cm，表面电阻一般为10 2～10 5Ω。这里，电阻率是根据JIS K7194(四点探针排列法测定传导塑料电阻率的测试方法)测量得出的数值。另外，若使用本发明的卷曲变形锦纶导电长丝，有可能通过洗涤产生小于10 1的电阻增加量(使用该长丝织造的织物，与未清洗时的电阻相比，在清洗100次后的电阻增加量)。 Nylon texturized resistivity of the conductive filaments is generally ~ 10 2 Ω · cm, the surface resistivity is usually 100 10 2 ~ 10 5 Ω. Here, the resistivity is a value measured in accordance with JIS K7194 (a four-point probe arrangement method for measuring the resistivity of conductive plastics). In addition, if the crimped textured nylon conductive filament of the present invention is used, it is possible to produce a resistance increase of less than 10 1 by washing (a fabric woven with this filament has a resistance after washing 100 times compared with the resistance when it is not washed. Resistance increase).
《卷曲变形锦纶导电长丝的制造方法》"Method for manufacturing crimped textured nylon conductive filament"
本发明的卷曲变形锦纶导电长丝(用于变形加工的锦纶导电纤维原丝)，例如通过对锦纶导电长丝依次进行加热塑化、冷却、假捻、定型、加网络、上油、卷绕的各工序加工得到。以下，是对原料及工艺过程的详细说明。The crimped textured nylon conductive filament of the present invention (the nylon conductive fiber precursor used for texturing processing), for example, by sequentially heating and plasticizing the nylon conductive filament, cooling, false twisting, setting, adding network, oiling, and winding Processed in each process. The following is a detailed description of the raw materials and process.
〈原料〉<raw material>
本发明是由熔融复合纺丝工艺制备锦纶导电长丝经卷曲加工变形得到，由导电部分和非导电部分构成。其中，导电部分一般占导电长丝总质量的10～40％。非导电部分为聚酰胺成纤聚合物，导电部分由聚酰胺成纤聚合物、导电剂及助剂构成。用复合纺丝制造设备加工导电部分和非导电部分，得到复合构造的锦纶导电长丝。以下，是对各原料的详细说明。The invention is obtained by preparing a nylon conductive filament by a melt composite spinning process through crimping processing and deformation, and is composed of a conductive part and a non-conductive part. Among them, the conductive part generally accounts for 10-40% of the total mass of the conductive filament. The non-conductive part is a polyamide fiber-forming polymer, and the conductive part is composed of a polyamide fiber-forming polymer, a conductive agent and an auxiliary agent. The conductive part and the non-conductive part are processed with composite spinning manufacturing equipment to obtain a composite structure of nylon conductive filament. The following is a detailed description of each raw material.
(导电剂)(Conductive agent)
导电剂不特别限定，但优选导电炭黑、碳纳米管或其复合材料，导电性金属氧化物粉体。这些导电剂可以单独使用也可适当地组合使用。The conductive agent is not particularly limited, but preferably conductive carbon black, carbon nanotubes or composite materials thereof, and conductive metal oxide powder. These conductive agents may be used alone or in appropriate combination.
(聚酰胺成纤聚合物)(Polyamide fiber-forming polymer)
聚酰胺成纤聚合物不特别限定，例如锦纶6、锦纶66、锦纶610、锦纶10、锦纶12或锦纶612等脂肪族锦纶及其共聚物；脂环族聚酰胺以及芳香族聚酰胺也可以。这些聚酰胺成纤聚合物可以单独使用也可适当地组合使用。The polyamide fiber-forming polymer is not particularly limited. For example, aliphatic nylons such as nylon 6, nylon 66, nylon 610, nylon 10, nylon 12, or nylon 612 and their copolymers; alicyclic polyamides and aromatic polyamides are also acceptable. These polyamide fiber-forming polymers may be used alone or in appropriate combination.
(助剂)(Auxiliary)
助剂可以是偶联剂、分散剂、抗氧化剂、润滑剂。这里，偶联剂可以是铝酸酯偶联剂、钛酸酯偶联剂或硅烷偶联剂。分散剂可以是聚酯蜡分散剂。抗氧化剂可以是抗氧化剂1010或抗氧化剂DLTP。润滑剂可以是硬脂酸镁或硬脂酸锌。The auxiliary agent can be coupling agent, dispersant, antioxidant, lubricant. Here, the coupling agent may be an aluminate coupling agent, a titanate coupling agent, or a silane coupling agent. The dispersant may be a polyester wax dispersant. The antioxidant may be antioxidant 1010 or antioxidant DLTP. The lubricant can be magnesium stearate or zinc stearate.
〈工艺〉<Process>
{导电母粒的制造工艺}{Manufacturing Process of Conductive Masterbatch}
导电母粒是将导电剂或复合导电剂、助剂和聚酰胺成纤聚合物切片先进行混合混炼，经过双螺杆挤出机等设备，挤出、水冷、切粒等加工过程制得的颗粒料。这里，当纤维是黑色的情况下，导电剂是导电炭黑时，添加量一般是质量的20～35％。或者，导电剂是碳纳米管时，添加量一般是质量的5～15％。或者，导电剂是由导电炭黑和碳纳米管组成的复合导电剂时，添加量一般为是质量的10～25％。当纤维是浅色乃至白色的情况下，导电剂是浅色导电金属氧化物(例如，掺锑氧化钛导电粉)时，添加量一般是质量的50～80％。导电性母粒要预先干燥，含水量控制在100ppm以下。Conductive masterbatch is prepared by mixing and kneading conductive agent or composite conductive agent, auxiliary agent and polyamide fiber-forming polymer chips, and then through twin-screw extruder and other equipment, extrusion, water cooling, pelletizing and other processes. Pellets. Here, when the fiber is black and the conductive agent is conductive carbon black, the addition amount is generally 20 to 35% by mass. Alternatively, when the conductive agent is carbon nanotubes, the addition amount is generally 5 to 15% by mass. Alternatively, when the conductive agent is a composite conductive agent composed of conductive carbon black and carbon nanotubes, the addition amount is generally 10-25% by mass. When the fiber is light-colored or even white, and the conductive agent is a light-colored conductive metal oxide (for example, antimony-doped titanium oxide conductive powder), the addition amount is generally 50-80% by mass. The conductive masterbatch should be dried in advance, and the water content should be controlled below 100ppm.
在导电母粒制造工序中，(1)例如混合温度为80℃～140℃，时间为30～120min。双螺杆挤出机的挤出温度由聚酰胺成纤聚合物的熔点决定。例如，对熔点是220℃锦纶聚合物，温度设定的方法应为，一区的温度设为80～100℃， 二区的温度设为200℃，三区到出料口的各区温度均设为250～270℃。另外，螺杆的高宽比可以是1:25～1:50。In the conductive masterbatch manufacturing process, (1), for example, the mixing temperature is 80°C to 140°C, and the time is 30 to 120 minutes. The extrusion temperature of the twin screw extruder is determined by the melting point of the polyamide fiber-forming polymer. For example, for a nylon polymer with a melting point of 220°C, the temperature setting method should be set to 80-100°C in the first zone, 200°C in the second zone, and set the temperature in each zone from the third zone to the discharge port. It is 250～270℃. In addition, the aspect ratio of the screw may be 1:25 to 1:50.
{复合纺丝工艺(2)}{Composite spinning process (2)}
复合纺丝(导电长丝)，将聚酰胺成纤聚合物切片与导电母粒用螺杆挤出机分别熔融输送，用计量泵计量，分配给复合型纺丝板，从喷丝板喷出，最后由侧吹风进行冷却、凝固、拉伸、上油、导线、卷绕、完成。这里，使用的非导电部分的切片，要预先干燥，含水量控制在50ppm以下。干燥过程可以使用流动干燥床、转鼓干燥、氮气环境下连续干燥等。For composite spinning (conductive filament), the polyamide fiber-forming polymer chips and conductive masterbatch are respectively melted and transported by a screw extruder, measured by a metering pump, distributed to the composite spinning plate, and ejected from the spinneret. Finally, the side blower is used to cool, solidify, stretch, oil, wire, wind, and complete. Here, the slices of the non-conductive part used should be dried in advance, and the water content should be controlled below 50 ppm. The drying process can use fluid drying bed, drum drying, continuous drying under nitrogen environment, etc.
在复合纺丝工艺(2)中，纺线过程中螺杆挤出组件的温度，要满足聚合物正常熔融、输送，并且达到一定的表观粘度为佳。这里需要特别留意的是，在复合纺丝的制造中，使两种的纺丝熔体的表观粘度相接近。这在纺丝的正常进行过程中极为重要，应该对不同的聚酰胺成纤聚合物进行细致的工艺摸索和确认。在工艺(2)中，用于冷却丝条的工艺参数包括侧吹风的风压、风速、风温及风湿度。拉伸卷绕速度一般为2000～5000m/min，拉伸可用热箱或热辊进行。In the composite spinning process (2), the temperature of the screw extrusion assembly during the spinning process should satisfy the normal melting and conveying of the polymer, and it is better to reach a certain apparent viscosity. What needs special attention here is that in the manufacture of composite spinning, the apparent viscosities of the two spinning melts are similar. This is extremely important in the normal process of spinning. Different polyamide fiber-forming polymers should be carefully explored and confirmed. In the process (2), the process parameters for cooling the filaments include the wind pressure, wind speed, wind temperature and wind humidity of the side blowing. The stretching and winding speed is generally 2000-5000m/min, and the stretching can be carried out with a hot box or a hot roller.
这里，典型的炭黑芯鞘型锦纶导电长丝的性能指标是，(1)单丝细度为3.7dtex；(2)断裂强度为2.5cN/dtex；(3)断裂伸长率为55％；(4)电阻率为65Ω·cm；(5)表面电阻为10 4Ω。 Here, the performance indicators of typical carbon black core-sheath nylon conductive filaments are: (1) Single filament fineness is 3.7dtex; (2) Breaking strength is 2.5cN/dtex; (3) Breaking elongation is 55% ; (4) The resistivity is 65Ω·cm; (5) The surface resistance is 10 4 Ω.
{卷曲变形加工工艺(3)}{Curl deformation processing technology (3)}
卷曲变形加工工艺(3)是指，使用加弹机对所述导电长丝进行卷曲变形加工处理的工艺。The crimping process (3) refers to a process of crimping the conductive filament using a texturing machine.
(加弹设备)(Texture equipment)
这里，首先参考图3，对加弹设备进行详细说明。加弹设备由拉伸变形区、定型区、卷绕域构成。流程是：原丝架→原丝臂→隔丝板→压丝片→解舒中心 →原丝管入口导丝器→导丝管→切丝器→分丝器→第一罗拉(FR1)移丝器→第一罗拉(FR1)→罗拉臂→钢辊→皮辊→升头杆→固定导丝器→止捻器→防震导丝器→热箱入口导丝器→热箱出口导丝器→第一加热箱(H1)→冷却板入口导丝器→冷却板(CP)→冷却板出口导丝器→假捻器(FT)→张力导丝器→张力传感器→第二罗拉(FR2)移丝器→第二罗拉(FR2)→第二加热箱(H2)→第三罗拉(FR3)→网络喷嘴→分丝杆→探丝器(感应器)→上油轮→油轮上下导丝器→分丝器→分丝杆→原点开关→横动盖板→兔子头→拢丝臂→送丝臂→打尾臂→吸嘴→黑棍→夹盘→纸管摇架→卷绕成型装置。简化的工艺流程是：POY原丝→切丝器→第一罗拉(FR1)→升头杆→止捻器→变型热箱(H1)→冷却板(CP)→假捻器(FT)→第二罗拉(FR2)→定型热箱(H2)→(网络喷嘴)→第三罗拉(FR3)→上油→卷绕罗拉(FR4)→卷绕→分级检查→包装入库。以下，是对重要环节的详细描述。Here, first, referring to FIG. 3, the bombing equipment will be described in detail. The texturing equipment is composed of a stretch deformation zone, a shaping zone and a winding zone. The process is: original wire frame → original wire arm → wire spacer → wire pressing sheet → unwinding center → original wire tube inlet guide wire → guide wire tube → thread cutter → thread splitter → first roller (FR1) shift Yarn guide → First roller (FR1) → Roller arm → Steel roller → Top roller → Lifting rod → Fixed yarn guide → Twist stopper → Anti-vibration yarn guide → Hot box inlet yarn guide → Hot box outlet yarn guide → First heating box (H1) → Cooling plate inlet guide → Cooling plate (CP) → Cooling plate outlet guide → False twister (FT) → Tension guide → Tension sensor → Second roller (FR2) Thread transfer device→Second Roller (FR2)→Second Heating Box (H2)→Third Roller (FR3)→Network Nozzle→Screw Splitting Rod→Spreader (Inductor)→Tanker→Tanker Upper and Lower Wire Guides→ Spinner → Spinner → Origin switch → Traverse cover → Rabbit head → Wire holding arm → Wire feed arm → Tail arm → Suction nozzle → Black stick → Chuck → Paper tube cradle → Winding forming device. The simplified technological process is: POY raw yarn → thread cutter → first roller (FR1) → lift rod → twist stopper → modified heat box (H1) → cooling plate (CP) → false twister (FT) → No. Two rollers (FR2) → shaping hot box (H2) → (network nozzle) → third roller (FR3) → oiling → winding roller (FR4) → winding → classification inspection → packaging and warehousing. The following is a detailed description of the important links.
·喂丝罗拉·Silola
喂丝罗拉的作用是实现丝条的传输作用。第一罗拉是给丝边的罗拉。其装置有两种组成方式，一个是喂丝罗拉和皮圈，另一个是喂丝罗拉和皮辊。皮圈的优点是接触面积大、握持力大、可减少轴承磨损，其缺点是易损坏。而皮辊的优点是耐磨且可多次使用，其缺点是握持力不足，须在辊上绕圈弥补。较好的装置是喂丝罗拉和皮辊，在FR2上必须绕两圈，在加工细旦时还需在FR1上绕两圈(移丝间距一般为5-10mm)来弥补张力不足。丝条通过第一罗拉到升头杆，升头杆顶部有个止捻器装置，作用是将丝条固定在第一加热箱顶部，起到防止丝逃捻或回捻。喂丝罗拉前的横动移丝器，它的作用是避免丝条对罗拉的集中磨损，延长皮圈(或压辊)的使用寿命。生产加弹丝时，移丝的间距一般为5～10mm。移丝位置不正时，不能保证丝条在喂丝皮圈(或压辊)的规定范围 内运行，从而不能保证丝条按规定的工艺要求执行。如第一、第二罗拉前的横动移丝器位置不正，就不能保证丝条正常牵伸的实现，引起缠丝。The function of the silk roller is to realize the transmission of the silk. The first roller is for the silk edge. The device has two components, one is silk roller and apron, and the other is silk roller and apron. The advantage of the apron is that the contact area is large, the holding force is large, and the wear of the bearing can be reduced. The disadvantage is that it is easy to damage. The advantage of the top roller is that it is wear-resistant and can be used many times, but its disadvantage is that it has insufficient holding power, which must be compensated by winding on the roller. The better device is the silk feeding roller and the top roller, which must be wound on FR2 twice. When processing fine deniers, it is also necessary to wind two times on FR1 (the wire transfer distance is generally 5-10mm) to make up for insufficient tension. The thread is pulled to the lifting rod through the first roller, and there is a twist stop device on the top of the lifting rod, which is used to fix the thread on the top of the first heating box to prevent the thread from escaping or twisting back. The traverse thread transfer device before feeding the silk roller, its function is to avoid the concentrated wear of the thread to the roller, and to extend the service life of the apron (or press roller). When producing stretched yarn, the distance of moving yarn is generally 5-10mm. When the thread moving position is not correct, it cannot be guaranteed that the thread will run within the specified range of the thread feeding apron (or press roller), so that it cannot be guaranteed that the thread will be executed in accordance with the specified process requirements. If the position of the traverse thread mover before the first and second rollers is not correct, the realization of the normal drafting of the thread cannot be guaranteed, which will cause the thread entanglement.
·第一加热器·The first heater
第一加热器又叫变型热箱，是接触式加热方式，1000M型长为2.5m，V型长为2.0m。其作用是加热丝条呈塑化状态，降低拉伸变形应力，更容易拉伸变形。它是由真空密封联苯蒸汽和电加热复合加热。The first heater is also called a modified hot box, which is a contact heating method. The length of 1000M type is 2.5m, and the length of V type is 2.0m. Its function is to heat the filament into a plasticized state, reduce tensile deformation stress, and make it easier to stretch deformation. It is heated by vacuum-sealed biphenyl steam and electric heating.
·冷却板·Cooling plate
冷却板的作用是对纤维加捻以后卷曲结构的固定，如果冷却不佳(或不均匀)，则纤维在加捻过程形成的卷曲结构就不均匀，进而影响染色均匀性，导致退变色等。在加弹机上，丝条冷却用冷却板冷却。The function of the cooling plate is to fix the crimp structure of the fiber after twisting. If the cooling is not good (or uneven), the crimp structure formed by the fiber during the twisting process will be uneven, which will affect the uniformity of dyeing and cause fading. On the texturing machine, the strands are cooled by cooling plates.
·假捻器·False twister
假捻器的作用是产生机械扭曲应力，以便变形加工。它是加弹机的核心。它是通过摩擦盘的转向对丝条进行加捻和解捻从而形成一个假捻的作用(一般是“Z”捻)。一般摩擦盘分为软盘(聚氨酯PU盘等)和硬盘(陶瓷盘、砂盘等)，软盘摩擦系数高、表面柔软、对丝条损伤小、“雪花少”，但使用寿命短、成本高；而硬盘与软盘相反。The function of the false twister is to produce mechanical twisting stress for deformation processing. It is the core of the texturing machine. It twists and untwists the thread through the turning of the friction disc to form a false twist (usually "Z" twist). Generally, friction disks are divided into floppy disks (polyurethane PU disks, etc.) and hard disks (ceramic disks, sand disks, etc.). Floppy disks have high friction coefficient, soft surface, small damage to the wire, and "less snow", but they have short service life and high cost; The hard disk is the opposite of a floppy disk.
·第二罗拉(中间罗拉)·Second Roller (Middle Roller)
通常，中间罗拉的速度即所谓的加工速度。为防止逃捻丝的发生，要求它的皮圈架握持里要强。Generally, the speed of the middle roller is the so-called processing speed. In order to prevent the occurrence of untwisted yarn, it is required that its apron holder should be strong.
·第二加热器·Secondary heater
第二加热器又叫定型热箱，是非接触式的。其主要作用是消除变形丝的内应力，提高纤维的尺寸稳定性。提高第二加热箱的温度的话，成品纤维的卷曲率(弹性)会下降，沸水收缩率降低，提高尺寸稳定性，同时丝的残余扭矩变 小。The second heater is also called the stereotyped hot box, which is non-contact type. Its main function is to eliminate the internal stress of the textured yarn and improve the dimensional stability of the fiber. If the temperature of the second heating box is increased, the crimp rate (elasticity) of the finished fiber will decrease, the boiling water shrinkage rate will decrease, the dimensional stability will be improved, and the residual torque of the yarn will decrease.
·第三罗拉·The third roller
对皮圈的握持要求相对较高，但较W2、W1要求低些。其作用是形成OF2(即定型超喂)，进行相对松弛状态定型，消除大部分变形中的内应力，使膨松性适中，弹性适中，沸水收缩率正常，尺寸稳定性好。第二罗拉A与第三罗拉之间的超喂比，即定型超喂，主要控制丝条在相对松弛状态下定型。The requirements for holding aprons are relatively high, but lower than those of W2 and W1. Its function is to form OF2 (that is, setting overfeeding), perform a relatively relaxed state setting, eliminate most of the internal stress in the deformation, make the bulkiness moderate, moderate elasticity, normal boiling water shrinkage, and good dimensional stability. The overfeed ratio between the second roller A and the third roller, that is, the setting overfeed, mainly controls the setting of the yarn in a relatively relaxed state.
·油轮·Tankers
油轮的作用主要是给低弹丝加上适当的油剂，其作用是提高纤维的集束性，增加纤维的平滑性，改善纤维的抗静电性，适应后道织造的要求。上油率，所上的油剂量占纤维总重量的比例，一般在2％左右。影响其上油率的还有油轮的转速。The main function of the tanker is to add appropriate oil to the low-stretch yarn. Its function is to improve the bundling of the fiber, increase the smoothness of the fiber, improve the antistatic property of the fiber, and meet the requirements of the subsequent weaving. The oiling rate, the ratio of the amount of oil applied to the total weight of the fiber, is generally about 2%. The speed of the tanker also affects its oil rate.
·检丝器、剪丝器·Wire detector, wire cutter
加弹机中的检丝器又叫断丝探测器或敏感器，是与剪丝器(又叫切丝器)自动配合动作的。当丝条在运行中发生断丝时，由检丝器感知，然后以电子信号触发剪丝器动作，将断丝锭位的丝条在喂入罗拉前切断，以防丝条缠绕在罗拉上。The thread detector in the texturing machine is also called a broken thread detector or a sensor, which automatically cooperates with the thread cutter (also called the thread cutter). When the thread breaks during operation, it is sensed by the thread detector, and then the thread cutter is triggered by an electronic signal to cut the thread at the broken spindle position before feeding the roller to prevent the thread from being entangled on the roller .
·吸丝器·Sucker
吸丝器的作用是帮助升头、落筒及剥丝。The function of the sucker is to help lift the head, doffing and stripping.
·吸烟装置·Smoking device
吸烟装置安装在第一加热箱的出口处，它的作用是吸去丝条在第一加热箱中加热而产生的各种气体挥发物，防止加热箱结垢。The smoking device is installed at the exit of the first heating box, and its function is to absorb various gas volatiles generated by the heating of the thread in the first heating box, and prevent the heating box from scaling.
(工艺条件)(Process conditions)
工艺条件主要是加工速度(YS)、牵伸比(DR)、速度比(D/Y，摩擦盘的表 面速度与丝条离开假捻器的速度之比)，K值(解捻张力与加捻张力的比值)以及三个超喂OF2％、OF2A％、OF3％和两个热箱温度，即第一加热箱(H1)的温度和第二加热箱(H2)的温度。The process conditions are mainly processing speed (YS), draft ratio (DR), speed ratio (D/Y, the ratio of the surface speed of the friction disc to the speed of the thread leaving the false twister), K value (untwisting tension and adding The ratio of twist tension) and three overfeed OF2%, OF2A%, OF3% and two hot box temperatures, namely the temperature of the first heating box (H1) and the temperature of the second heating box (H2).
·温度(H1，H2)和冷却板·Temperature (H1, H2) and cooling plate
第一加热箱的温度是纤维的变形温度。要求在该温度下，纤维在塑化的同时，不可以发生黏着。第二加热箱又叫定型加热箱，是非接触型空气加热，一般是由热媒加热，用于给假捻后的丝条定型。第二加热箱的温度提高，丝条的卷曲率(弹性)则会下降。具体比如，第一加热箱的温度在160℃～185℃左右，它是由真空密封联苯蒸汽和电加热复合加热。定型区主要是第二加热箱又叫定型热箱，是非接触空气加热，它是由热媒加热的。它的温度在140℃左右(比第一加热箱温度低30℃左右)。它的作用是对加工后的丝条进行定型，所以如果提高第二加热箱温度，会导致丝条的卷曲率(弹性)降低，沸水收缩率降低。因此，加工高弹丝时，关闭第二加热箱即可。另外，第一加热箱的下方是冷却板，主要是固定丝条的热变形，降低其热塑性，使丝条具有一定刚性，跟利于捻度的传递。如果冷却不佳(或不均匀)，则纤维在假捻过程中形成的卷曲结构就不均匀，进而影响染色的均匀性，退变色等。例如，利用金属板·空气冷却，要将丝冷却到80℃，冷却板的长度为1.5m。The temperature of the first heating box is the deformation temperature of the fiber. It is required that at this temperature, the fiber should not stick while being plasticized. The second heating box is also called the shaping heating box, which is non-contact air heating, generally heated by a heat medium, and used to shape the false twisted yarn. As the temperature of the second heating box increases, the crimp rate (elasticity) of the thread will decrease. For example, the temperature of the first heating box is about 160°C to 185°C, and it is heated by a combination of vacuum-sealed biphenyl steam and electric heating. The shaping area is mainly the second heating box, also called the shaping hot box, which is heated by non-contact air and heated by a heat medium. Its temperature is about 140°C (about 30°C lower than the temperature of the first heating box). Its function is to shape the processed thread, so if the temperature of the second heating box is increased, the crimp rate (elasticity) of the thread will decrease, and the boiling water shrinkage rate will decrease. Therefore, when processing high-elastic yarns, just turn off the second heating box. In addition, under the first heating box is a cooling plate, which is mainly used to fix the thermal deformation of the wire rod and reduce its thermoplasticity, so that the wire rod has a certain rigidity, which is conducive to the transmission of twist. If the cooling is not good (or uneven), the crimp structure formed during the false twisting process of the fiber will not be uniform, which will affect the uniformity of dyeing and discoloration. For example, using metal plate and air cooling to cool the filament to 80°C, the length of the cooling plate is 1.5m.
·牵伸比及速度(超喂率)·Drawing ratio and speed (overfeed rate)
牵伸比是第二罗拉与第一罗拉的速度比(DR＝FR2/FR1)。一般计算拉伸比是以原丝的丹尼/加工后丝的丹尼，而考虑临界拉伸的因素，实际拉伸比小于等于计算拉伸比乘以1.1。伴随拉牵伸比的增加，丝条的强度增加、伸长率下降。然而，拉伸比低，会导致在假捻器下方捻度不能全部消除，有可能是纤维粘在一起形成紧点，牵伸比过高则处于假捻器下方的丝条呈较松散的状态，由于过大 的张力，而易形成毛丝，所以设定牵伸比的时候除了应该考虑强度伸度的指标外，还应注意观察张力变化情况，使毛丝、紧点均较少。The draft ratio is the speed ratio of the second roller to the first roller (DR=FR2/FR1). Generally, the calculated draw ratio is based on the denier of the original yarn/the denier of the processed yarn, and considering the critical stretching factor, the actual draw ratio is less than or equal to the calculated draw ratio multiplied by 1.1. Along with the increase in draw-draw ratio, the strength of the thread increases and the elongation decreases. However, a low draw ratio will cause the twist under the false twister to not be completely eliminated. It is possible that the fibers stick together to form a tight spot. If the draft ratio is too high, the thread under the false twister will be looser. Because of the excessive tension, it is easy to form wool, so when setting the draft ratio, in addition to the index of strength and elongation, attention should be paid to observe the change of tension, so that the wool and tight spots are less.
加工速度就是第二罗拉的速度。一般，加工速度要比临界速度低15％～20％，较为适宜的速度是300～500m/min左右。加工速度大，丝条假捻张力就会变大，丝条与摩擦盘接触的压力变大，丝盘间的滑移变小，卷曲率和卷曲稳定性大，但是会出现毛丝。与加工速度相关的三个超喂分别是OF2％、OF2A％、OF3％，即OF2％(定型超喂)、OF2A％和OF3％(卷绕超喂)。超喂率会影响丝的强伸度以及伸缩率。OF2％将会对第二加热箱的张力进行调节，是控制热定型的效果以及影响丝条的膨松性，但如果该比值设置的太高会导致丝条从FR2罗拉出来后抖动，对丝条产生松圈和色斑等异常，其公式：OF2％＝(FR2A-FR3)*100/FR2A。OF3％主要对卷张力进行调节，决定了卷装成形的好坏，其公式：OF3％＝(FR2A-WR)*100/FR2A。OF2A％是控制网络气压的张力，FR2与FR2A之间有1个网络喷嘴，因此该张力直接影响网络数的多少。The processing speed is the speed of the second roller. Generally, the processing speed is 15%-20% lower than the critical speed, and the more suitable speed is about 300-500m/min. The higher the processing speed, the higher the false-twisting tension of the thread, the higher the contact pressure between the thread and the friction disc, the smaller the slip between the thread discs, the higher the crimp rate and the crimp stability, but the appearance of wool. The three overfeeds related to the processing speed are OF2%, OF2A%, OF3%, namely OF2% (setting overfeed), OF2A% and OF3% (winding overfeed). The overfeed rate will affect the strength and elongation of the silk and the rate of stretching. OF2% will adjust the tension of the second heating box, which is to control the effect of heat setting and affect the bulkiness of the thread, but if the ratio is set too high, it will cause the thread to shake after being pulled out of the FR2 roller. The strip produces abnormalities such as loose circles and stains. The formula is: OF2%=(FR2A-FR3)*100/FR2A. OF3% mainly adjusts the roll tension and determines the quality of the package forming. The formula: OF3%=(FR2A-WR)*100/FR2A. OF2A% is the tension that controls the air pressure of the network. There is a network nozzle between FR2 and FR2A, so the tension directly affects the number of networks.
·K值及D/Y比·K value and D/Y ratio
D/Y比是指摩擦盘的表面速度与丝条离开假捻器的速度之比(摩擦盘速度/FR2)。在一定范围内，它的变化对纤维的卷曲率、卷曲稳定性、强度、伸度等物理指标几乎无影响，与加工中假捻器之前和之后的张力有关。假捻之前的张力表示T1(加捻张力)，假捻之后的张力表示T2(解捻张力)，当丝的速度保持恒定时，仅增加加捻盘表面速度，解捻张力会降低。简而言之，D/Y增加，T1＞T2，会导致紧点；D/Y降低，T1＜T2，会导致毛丝。因此，D/Y的数值一般控制在1.3～2.5，在此范围内，随D/Y比的变化，低弹丝的卷曲性能和强度等物理指标几乎不变，有利于稳定生产。The D/Y ratio refers to the ratio of the surface speed of the friction disc to the speed of the thread leaving the false twister (friction disc speed/FR2). Within a certain range, its change has almost no effect on the fiber's crimp rate, crimp stability, strength, elongation and other physical indicators, and is related to the tension before and after the false twister during processing. The tension before false twisting means T1 (twisting tension), and the tension after false twisting means T2 (untwisting tension). When the yarn speed remains constant, only increasing the surface speed of the twisting plate will reduce the untwisting tension. In short, an increase in D/Y, T1>T2, will lead to tight spots; a decrease in D/Y, T1<T2, will lead to wool. Therefore, the value of D/Y is generally controlled between 1.3 and 2.5. Within this range, with the change of the D/Y ratio, the physical indicators such as the crimp performance and strength of the low-stretch yarn are almost unchanged, which is beneficial to stable production.
对本发明的炭黑型复合结构导电长丝的卷曲变形加工处理，最合适的工艺 参数基本为，加热塑化的温度为145～195℃，定型温度为25～135℃，拉伸倍率为1.05～1.5，D/Y的数值为1.3～2.5，卷绕速度为100～800m/min。For the crimp texturing treatment of the carbon black composite structure conductive filament of the present invention, the most suitable process parameters are basically: the heating and plasticizing temperature is 145～195℃, the setting temperature is 25～135℃, and the stretching ratio is 1.05～ 1.5, the value of D/Y is 1.3-2.5, and the winding speed is 100-800m/min.
《卷曲变形锦纶导电长丝的应用》"Application of crimped nylon conductive filament"
使用卷曲变形锦纶导电长丝，可以得到纤维结合体。这里的“纤维结合体”不仅包括像织物(例如布料或无纺布)这样的成型品，也包括3D纤维成型品。Using crimped textured nylon conductive filaments, a fiber combination can be obtained. The "fiber combination" here includes not only molded products such as fabrics (for example, cloth or non-woven fabrics), but also 3D fiber molded products.
本发明的卷曲变形锦纶导电长丝，具有良好的导电性和柔软性，可用于智能穿戴制品和纤维型传感的制造。本发明的卷曲变形锦纶导电长丝，电阻值低，具有优秀的电磁波和磁力的屏蔽性能，可应用于防辐射服装的生产制造。本发明的所述卷曲变形导电长丝，具有更优秀的后续织造性能，可用于制造导电长丝、双丝(合捻)、双捻丝(又称作纱线)、多丝及复合捻丝。The crimped textured nylon conductive filament of the present invention has good conductivity and flexibility, and can be used in the manufacture of smart wearable products and fiber-type sensors. The crimped and deformed nylon conductive filament of the present invention has a low resistance value, has excellent electromagnetic wave and magnetic shielding performance, and can be applied to the production of radiation-proof clothing. The crimped textured conductive filament of the present invention has better subsequent weaving performance, and can be used to manufacture conductive filaments, double filaments (twisted), double twisted filaments (also called yarns), multifilaments and composite twisted filaments .
从其他观点证实，本发明的卷曲变形锦纶导电长丝，其应用大致可分为两类。一类是将其作为原料，直接进行布料或无纺布的生产制造。另一类是，将卷曲变形锦纶导电长丝与非导电纤维的原料纤维进行交捻、双捻后再织造，可以制成纤维机能材料体。包含本发明的卷曲变形锦纶导电长丝在内，生产制造防静电织物、防辐射织物、纤维织物型传感、智能穿戴中的任何一类，均在本发明的申请范围内。It is confirmed from other viewpoints that the application of the crimped textured nylon conductive filament of the present invention can be roughly divided into two categories. One is to use it as a raw material to directly produce fabrics or non-woven fabrics. The other is that the raw material fibers of the crimped textured nylon conductive filament and the non-conductive fiber are twisted, double-twisted and then woven to form a fiber functional material body. Including the crimped textured nylon conductive filament of the present invention, the production of any one of anti-static fabric, anti-radiation fabric, fiber fabric type sensor, and smart wear is within the scope of application of the present invention.
《工业上利用的可能性》"Possibility of Industrial Use"
本发明是使用由复合纺丝工艺制备的导电纤维原丝，对其进行卷曲变形处理的技术。本发明的卷曲变形锦纶导电长丝、导电丝及其制成品，具有良好的导电性、发热性、防静电、屏蔽电磁波以及导热性等特性，更具有方便的加工性和舒适的穿着性。本发明的卷曲变形锦纶导电长丝、导电丝及其制成品，具有所述各特性出色的持久性，并且还有良好的柔软性、触感(或者质感)、使用性、加工性等特性。因此，通过尽可能运用所述特性，本发明的卷曲变形锦纶 导电长丝、导电丝及其制成品，例如防静电或者屏蔽电磁波的服装应用(例如工作服或制服)、室内装饰应用(例如窗帘、地毯、墙面涂层材料、隔离物)、袋装过滤器、机器罩子、复印机刷、电磁波防护工业材料等，可以有效地应用于各种用途。此外，根据本发明的制造方法，可以更加灵活地生产制造卷曲变形锦纶导电长丝、导电丝及其制成品。简而言之，此制造方法有着杰出的实用性。The present invention is a technology that uses conductive fiber precursors prepared by a composite spinning process to perform crimp texturing treatment. The crimped nylon conductive filament, the conductive yarn and the products thereof of the present invention have good electrical conductivity, heat generation, anti-static, electromagnetic wave shielding, thermal conductivity and other characteristics, and are more convenient to process and comfortable to wear. The crimped nylon conductive filaments, conductive yarns and finished products thereof of the present invention have excellent durability with the above-mentioned characteristics, and also have good softness, touch (or texture), usability, processability and other characteristics. Therefore, by using the characteristics as much as possible, the crimped nylon conductive filaments, conductive yarns and their finished products of the present invention, such as antistatic or electromagnetic wave shielding clothing applications (such as work clothes or uniforms), interior decoration applications (such as curtains) , Carpets, wall coating materials, spacers), bag filters, machine covers, photocopier brushes, electromagnetic wave protection industrial materials, etc., can be effectively applied to various purposes. In addition, according to the manufacturing method of the present invention, crimped textured nylon conductive filaments, conductive yarns and finished products can be produced more flexibly. In short, this manufacturing method has outstanding practicality.
【实施例】[Example]
<制造例1>炭黑型锦纶导电长丝的制造<Production Example 1> Production of carbon black type nylon conductive filament
以下，列举一般炭黑型锦纶导电长丝{锦纶6(PA6)}的例子。下面实施例中使用的复合结构，可参考本制造例1进行制造。Hereinafter, examples of general carbon black type nylon conductive filament {nylon 6 (PA6)} are listed. The composite structure used in the following embodiments can be manufactured with reference to Manufacturing Example 1.
炭黑导电剂6kg，铝酸酯偶联剂100g，聚酯蜡分散剂600g，1010与DLTP的混合抗氧化剂30g，硬脂酸镁150g，PA6切片13.2kg。将所述材料预先混炼(混炼温度：120℃，混炼时间：40min)。随后，用双螺杆挤出机进行熔融，得到炭黑导电剂含量为30wt％的导电母粒，并充分干燥。Carbon black conductive agent 6kg, aluminate coupling agent 100g, polyester wax dispersant 600g, 1010 and DLTP mixed antioxidant 30g, magnesium stearate 150g, PA6 slice 13.2kg. The materials were mixed in advance (mixing temperature: 120°C, mixing time: 40 min). Subsequently, a twin-screw extruder was used for melting to obtain a conductive masterbatch with a carbon black conductive agent content of 30 wt%, which was sufficiently dried.
将干燥过的非导电部分PA6切片80kg与所述导电母粒，分别放入螺杆挤出机熔融，熔体输送。将熔体在各个计量泵精确计量后，以一定的比例(导电部分为纤维全重量的25wt％)倒入鞘芯型外导复合纺丝机内混合，从喷丝孔喷出，形成熔体细流。这里，复合纺丝箱的温度为289℃。熔体细流经冷却风冷却、固化形成初生纤维。这里，侧面送风的风压为150Pa，风速为1.0m/s，风温度为18℃，风湿度为80％。冷却后，通过导丝器对丝束上油，通过通道到达卷绕工序，再经油轮上下导丝器更改丝的运行方向，调节张力后，进入卷绕机制成丝饼(卷绕速度为3500m/min)。最终，制出160D/32f的鞘芯型外导PA6导电纤维(鞘层是炭黑导电部分)。该导电纤维的导电部分占25wt％，导电炭黑占纤维全质量的 7.5wt％，高电阻测量仪测得电阻为6×10 5Ω/cm，电阻率为75Ω·cm。另外，在本制造例中，是使用鞘芯型外导复合纺丝机完成的鞘芯型的制造案例，用同样的手法，使用内嵌外导三翼形复合纺丝机可以制造复合型丝。 The dried non-conductive part PA6 sliced 80 kg and the conductive master batch were put into a screw extruder to melt, and the melt was conveyed. After the melt is accurately measured in each metering pump, it is poured into the sheath-core type outer guide composite spinning machine in a certain proportion (the conductive part is 25wt% of the total weight of the fiber) and mixed, and ejected from the spinneret to form a melt Trickle. Here, the temperature of the composite spinning box is 289°C. The thin flow of melt is cooled and solidified by cooling air to form primary fibers. Here, the wind pressure of the side air supply is 150 Pa, the wind speed is 1.0 m/s, the wind temperature is 18°C, and the wind humidity is 80%. After cooling, the tow is oiled through the yarn guide, and the winding process is reached through the channel, and then the running direction of the yarn is changed through the upper and lower yarn guides of the tanker, after adjusting the tension, it enters the winding machine to make a cake (winding speed is 3500m /min). Finally, a 160D/32f sheath-core outer conductive PA6 conductive fiber (the sheath is the carbon black conductive part) is produced. The conductive part of the conductive fiber accounts for 25 wt%, the conductive carbon black accounts for 7.5 wt% of the total fiber mass, the resistance measured by the high resistance measuring instrument is 6×10 5 Ω/cm, and the resistivity is 75 Ω·cm. In addition, in this manufacturing example, it is a sheath-core type manufacturing example completed by using a sheath-core type outer guide composite spinning machine. In the same way, a composite type yarn can be manufactured using an in-line and outer guide three-wing composite spinning machine. .
<实施例1>卷曲锦纶导电长丝(复合结构)的制造<Example 1> Manufacture of crimped nylon conductive filament (composite structure)
(锦纶导电长丝)(Nylon conductive filament)
按照制造例1所记录的方法，首先制造锦纶导电长丝。得到的锦纶导电长丝就是复合结构(包含导电部分和非导电部分，导电部分是三叶型，被埋在非导电部分中)。这里，该长丝的细度为110dtex/32f，断裂强度为2.6cN/dtex，断裂伸长率为75％，高压电阻为5×10 5Ω/cm，表面电阻为10 5Ω。 According to the method recorded in Production Example 1, nylon conductive filaments were first produced. The obtained nylon conductive filament is a composite structure (contains a conductive part and a non-conductive part, the conductive part is a trilobal type and is buried in the non-conductive part). Here, the fineness of the filament is 110 dtex/32f, the breaking strength is 2.6 cN/dtex, the breaking elongation is 75%, the high voltage resistance is 5×10 5 Ω/cm, and the surface resistance is 10 5 Ω.
(卷曲变形加工工艺参数)(Curl deformation processing process parameters)
卷曲变形加工工艺参数是，第一加热箱温度为180℃，伸长倍率为1.2，D/Y为1.8，第二加热箱温度为130℃，摩擦盘组合形式为3-5-1，定型欠喂为-7.5％，卷绕欠喂为-4.5％，加工速度为380m/min。The process parameters of the crimping process are: the temperature of the first heating box is 180°C, the elongation ratio is 1.2, D/Y is 1.8, the temperature of the second heating box is 130°C, the combination of friction discs is 3-5-1, and the shape is insufficient The feed rate is -7.5%, the winding underfeed rate is -4.5%, and the processing speed is 380m/min.
(卷曲变形锦纶导电长丝)(Crimped textured nylon conductive filament)
得到的卷曲变形锦纶导电长丝的纤维指标是，细度90dtex/32f，断裂强度为3.0cN/dtex，断裂伸长率为25％，卷曲收缩率为22％，卷曲稳定度为75％，含油率为2.5％，沸水收缩率为4.5％，高压电阻为2×10 6Ω/cm，表面电阻为10 5Ω。 The fiber index of the obtained crimped textured nylon conductive filament is 90dtex/32f, breaking strength of 3.0cN/dtex, breaking elongation of 25%, crimp shrinkage of 22%, crimp stability of 75%, oil content The rate is 2.5%, the boiling water shrinkage rate is 4.5%, the high voltage resistance is 2×10 6 Ω/cm, and the surface resistance is 10 5 Ω.
<实施例2>卷曲锦纶导电长丝(芯鞘结构)的制造<Example 2> Manufacture of crimped nylon conductive filament (core-sheath structure)
(锦纶导电长丝)(Nylon conductive filament)
按照制造例1所记录的方法，首先制造芯鞘型锦纶导电长丝。这里，该长丝的细度为86dtex/16f，断裂强度为2.5cN/dtex，断裂伸长率为65％，高压电阻为1.5×10 6Ω/cm，表面电阻为10 3Ω。 According to the method recorded in Production Example 1, first, a core sheath type nylon conductive filament was produced. Here, the fineness of the filament is 86dtex/16f, the breaking strength is 2.5cN/dtex, the breaking elongation is 65%, the high voltage resistance is 1.5×10 6 Ω/cm, and the surface resistance is 10 3 Ω.
(卷曲变形加工工艺参数)(Curl deformation processing process parameters)
卷曲变形加工工艺参数是，第一加热箱温度为175℃，伸长倍率为1.05，D/Y为1.9，第二加热箱关闭或者没有安装，摩擦盘组合形式为3-5-1，定型欠喂为-7.5％，卷绕欠喂为-4.5％，加工速度为500m/min。The process parameters of the crimping process are as follows: the temperature of the first heating box is 175℃, the elongation ratio is 1.05, the D/Y is 1.9, the second heating box is closed or not installed, the combination of friction disc is 3-5-1, and the shape is insufficient. The feed rate is -7.5%, the winding underfeed rate is -4.5%, and the processing speed is 500m/min.
(卷曲变形锦纶导电长丝)(Crimped textured nylon conductive filament)
得到的炭黑芯鞘型卷曲变形锦纶导电长丝的纤维指标是，细度78dtex/16f，断裂强度为2.9cN/dtex，断裂伸长率为30％，卷曲收缩率为45％，卷曲稳定度为71％，含油率为2.5％，沸水收缩率为6.5％，高压电阻为8.5×10 5Ω/cm，表面电阻为10 3Ω。 The fiber index of the obtained carbon black core sheath crimped textured nylon conductive filament is 78dtex/16f, breaking strength of 2.9cN/dtex, breaking elongation of 30%, crimp shrinkage rate of 45%, and crimp stability It is 71%, the oil content is 2.5%, the boiling water shrinkage is 6.5%, the high-voltage resistance is 8.5×10 5 Ω/cm, and the surface resistance is 10 3 Ω.
<实施例3>低扭矩或无扭矩加捻卷曲变形锦纶导电长丝的加工<Example 3> Processing of low-torque or non-torque twisted crimped and textured nylon conductive filament
(锦纶导电长丝)(Nylon conductive filament)
按照制造例1所记录的方法，首先制造锦纶导电长丝。该锦纶导电长丝的细度为86dtex/16f，断裂强度为2.5cN/dtex，断裂伸长率为65％，高压电阻为1.5×10 6Ω/cm，表面电阻为10 4Ω。 According to the method recorded in Production Example 1, nylon conductive filaments were first produced. The nylon conductive filament has a fineness of 86dtex/16f, a breaking strength of 2.5cN/dtex, a breaking elongation of 65%, a high voltage resistance of 1.5×10 6 Ω/cm, and a surface resistance of 10 4 Ω.
(卷曲变形加工工艺参数)(Curl deformation processing process parameters)
卷曲变形加工工艺参数是，变形温度为170℃，伸长倍率为1.2，D/Y为1.9，将两根导电长丝分别按照Z捻和S捻的方向，并通过假捻器汇合，定型欠喂-6.8％，卷绕欠喂为-3.1％，加工速度为450m/min。The process parameters of the crimp texturing process are: the deformation temperature is 170℃, the elongation ratio is 1.2, and the D/Y is 1.9. The two conductive filaments are combined in the direction of Z twist and S twist respectively through a false twister. Feeding -6.8%, winding underfeeding is -3.1%, processing speed is 450m/min.
(卷曲变形锦纶导电长丝)(Crimped textured nylon conductive filament)
得到的炭黑芯鞘型卷曲变形锦纶导电长丝的纤维指标是，细度145dtex/32f，断裂强度为3.1cN/dtex，断裂伸长率为28％，卷曲收缩率为42％，卷曲稳定度为75％，含油率为3.0％，沸水收缩率为6.5％，高压电阻为8.5×10 5Ω/cm，表面电阻为10 4Ω，扭矩基本没有。 The obtained carbon black core sheath crimped textured nylon conductive filament has a fineness of 145dtex/32f, a breaking strength of 3.1cN/dtex, a breaking elongation of 28%, a crimp shrinkage of 42%, and crimp stability. The oil content is 75%, the oil content is 3.0%, the boiling water shrinkage is 6.5%, the high-voltage resistance is 8.5×10 5 Ω/cm, the surface resistance is 10 4 Ω, and the torque is almost no.
<实施例4>卷曲变形锦纶导电长丝与锦纶FDY的交捻-网络加工<Example 4> Twisting-network processing of crimped textured nylon conductive filament and nylon FDY
合捻丝原料是20D/4f的卷曲变形锦纶导电长丝与50D/24f的锦纶FDY。将这两种丝交捻，加网络，得到20D/4f+50D/24f的锦纶复合导电网络丝。其结果证明，在筒管上并未发现毛丝效果优异。The raw materials of the twisted yarn are 20D/4f crimped textured nylon conductive filament and 50D/24f nylon FDY. Twist these two kinds of yarns and add a network to obtain a 20D/4f+50D/24f nylon composite conductive network yarn. As a result, it was proved that the hairline effect was not excellent on the bobbin.
<实施例5>卷曲变形锦纶导电长丝织袜<Example 5> Crimped textured nylon conductive filament knitted socks
使用实施例2中得到的78dtex/16f炭黑芯鞘型卷曲变形锦纶导电长丝，在织袜机上编织长度50cm袜子。从外观即可看出，织物整齐美丽，手感柔软，表面电阻的测量结果为10 3Ω。经水和洗涤剂清洗30次后，表面电阻有微量减少，基本停留在10 3～4Ω。 Using the 78dtex/16f carbon black core-sheath type crimped textured nylon conductive filament obtained in Example 2 to knit socks with a length of 50 cm on a hosiery machine. It can be seen from the appearance that the fabric is neat and beautiful, with a soft hand feeling, and the measurement result of the surface resistance is 10 3 Ω. After washing with water and detergent for 30 times, the surface resistance decreased slightly, basically staying at 10 3 to 4 Ω.
<比较例1>导电纤维与锦纶FDY的交捻-网络加工<Comparative example 1> Twisting-network processing of conductive fiber and nylon FDY
合捻丝原料并非是本发明的产品，而是使用市面上的一种20D/4f锦纶导电长丝的导电纤维与50D/24f的锦纶FDY。将这两种丝交捻，加网络，得到20D/4f+50D/24f的锦纶复合导电网络丝。其结果发现，容易在筒管上形成毛丝，并未达到理想效果。The raw material of the twisted yarn is not the product of the present invention, but a conductive fiber of 20D/4f nylon conductive filament and 50D/24f nylon FDY on the market. Twist these two kinds of yarns and add a network to obtain 20D/4f+50D/24f nylon composite conductive network yarn. As a result, it was found that hairs were easily formed on the bobbin, which did not achieve the desired effect.
<比较例2>导电纤维织袜<Comparative Example 2> Conductive fiber hosiery
使用的原料并非为本发明产品，而是市面上的一种78dtex/16f的锦纶导电纤维原丝，直接在织袜机上编织长度50cm的袜子。从外观即可看出，织物粗糙，手感较硬，表面电阻的测量结果为10 3Ω。经水和洗涤剂清洗30次后，表面电阻有明显下降，数值为10 4～5Ω。 The raw material used is not the product of the present invention, but a 78dtex/16f nylon conductive fiber precursor on the market, which is directly knitted on a hosiery machine with a length of 50cm. It can be seen from the appearance that the fabric is rough, the hand feels hard, and the measurement result of the surface resistance is 10 3 Ω. After washing with water and detergent for 30 times, the surface resistance dropped significantly, with a value of 10 4 to 5 Ω.
以所述依据本发明的理想实施例为启示，通过所述的说明内容，相关工作人员完全可以在不偏离本项发明技术思想的范围内，进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。Taking the ideal embodiment according to the present invention as enlightenment, through the description content, relevant staff can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content of the description, and its technical scope must be determined according to the scope of the claims.

Claims (17)

  1. 一种卷曲变形锦纶导电长丝，其特征在于，A crimped textured nylon conductive filament, which is characterized in that:
    所述卷曲变形锦纶导电长丝是对锦纶导电长丝进行卷曲变形加工处理得到；The crimped textured nylon conductive filament is obtained by crimping the nylon conductive filament;
    所述卷曲变形锦纶导电长丝，卷曲收缩率为卷曲收缩率为15～60％，卷曲稳定度为40～90％。The crimped textured nylon conductive filament has a crimp shrinkage rate of 15-60%, and a crimp stability of 40-90%.
  2. 如权利要求1所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 1, wherein:
    所述卷曲变形锦纶导电长丝的单丝细度为1.5～6.0dtex，断裂强度为2.0～3.5cN/dtex，断裂伸长率为15～45％，电阻率为10 0～10 2Ω·cm，表面电阻为10 2～10 5Ω。 The conductive filament texturized nylon monofilament fineness of 1.5 ~ 6.0dtex, a breaking strength of 2.0 ~ 3.5cN / dtex, elongation at break of 15 to 45%, a resistivity of 10 0 ~ 10 2 Ω · cm , The surface resistance is 10 2 ～10 5 Ω.
  3. 如权利要求1或2所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 1 or 2, characterized in that:
    所述卷曲变形锦纶导电长丝，是由导电部分和非导电部分构成。The crimped deformed nylon conductive filament is composed of a conductive part and a non-conductive part.
  4. 如权利要求3所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 3, wherein:
    导电部分占导电长丝总质量的10～40％。The conductive part accounts for 10-40% of the total mass of the conductive filament.
  5. 如权利要求3所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 3, wherein:
    所述锦纶导电长丝为芯鞘结构；The nylon conductive filament has a core-sheath structure;
    所述芯鞘结构的鞘层为所述导电部分。The sheath of the core-sheath structure is the conductive part.
  6. 如权利要求3所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 3, wherein:
    所述锦纶导电长丝为复合结构，The nylon conductive filament is a composite structure,
    所述导电部分被埋入所述非导电部分中，并且导电部分中的一部分在所述锦纶导电长丝的表面露出。The conductive part is buried in the non-conductive part, and a part of the conductive part is exposed on the surface of the nylon conductive filament.
  7. 如权利要求3所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 3, wherein:
    所述导电部分是由导电剂、加工助剂和聚酰胺成纤聚合物构成。The conductive part is composed of a conductive agent, a processing aid and a polyamide fiber-forming polymer.
  8. 如权利要求7所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 7, wherein:
    所述导电剂为导电炭黑，所述导电炭黑的添加量，以所述导电部分的全部质量为基准，为质量的20～35％。The conductive agent is conductive carbon black, and the addition amount of the conductive carbon black is 20-35% of the mass based on the total mass of the conductive part.
  9. 如权利要求7所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 7, wherein:
    所述导电剂为碳纳米管，所述碳纳米管的添加量以，所述导电部分的全部质量为基准，为质量的5～15％。The conductive agent is carbon nanotubes, and the addition amount of the carbon nanotubes is based on the entire mass of the conductive part and is 5-15% of the mass.
  10. 如权利要求7所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 7, wherein:
    所述导电剂是由导电炭黑和碳纳米管构成的复合导电剂，所述复合导电剂的添加量，以所述导电部分的全部质量为基准，为质量的10～25％。The conductive agent is a composite conductive agent composed of conductive carbon black and carbon nanotubes, and the addition amount of the composite conductive agent is 10-25% by mass based on the total mass of the conductive part.
  11. 如权利要求7所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 7, wherein:
    所述导电剂为浅色导电金属氧化物，所述浅色导电金属氧化物的添加量，以所述导电部分的全部质量为基准，为质量的50～80％。The conductive agent is a light-colored conductive metal oxide, and the addition amount of the light-colored conductive metal oxide is 50-80% of the mass based on the entire mass of the conductive part.
  12. 如权利要求10所述的卷曲变形锦纶导电长丝，其特征在于，The crimped textured nylon conductive filament according to claim 10, wherein:
    所述复合导电剂，所述导电炭黑与所述碳纳米管的质量比，即The composite conductive agent, the mass ratio of the conductive carbon black to the carbon nanotubes, namely
    所述导电炭黑：所述碳纳米管为10：1～10：10。The conductive carbon black: the carbon nanotubes are 10:1-10:10.
  13. 一种卷曲变形锦纶导电长丝的制造方法，A method for manufacturing crimped textured nylon conductive filaments,
    对锦纶导电长丝，依次按照加热塑化、冷却、假捻、定型、加网络、上油、卷绕的工序，制造卷曲变形锦纶导电长丝。For nylon conductive filaments, the crimped nylon conductive filaments are manufactured according to the procedures of heating, plasticizing, cooling, false twisting, shaping, adding network, oiling, and winding.
    在所述工序中，加热塑化温度为140～195℃，成形温度为25～135℃，拉伸倍率为1.05～1.5，D/Y的数值为1.3～2.5，卷绕速度为100～800m/min。In the process, the heating and plasticizing temperature is 140-195°C, the forming temperature is 25-135°C, the stretching ratio is 1.05-1.5, the value of D/Y is 1.3-2.5, and the winding speed is 100-800m/ min.
  14. 一种将卷曲变形锦纶导电长丝用于防静电织物、防辐射织物、纤维织物型传感器或者智能穿戴产品的生产制造用途。The utility model relates to a production and manufacturing application of using crimped textured nylon conductive filaments for antistatic fabrics, anti-radiation fabrics, fiber fabric type sensors or smart wearable products.
  15. 如权利要求14所述的生产制造用途，其特征在于，The manufacturing use according to claim 14, wherein:
    所述卷曲变形锦纶导电长丝采用如权利要求1～12任意一项所述的卷曲变 形锦纶导电长丝。The crimped deformed nylon conductive filament uses the crimped deformed nylon conductive filament according to any one of claims 1-12.
  16. 一种包含卷曲变形锦纶导电长丝在内的防静电织物、防辐射织物、纤维织物型传感或者智能穿戴的产品。An anti-static fabric, anti-radiation fabric, fiber fabric type sensor or smart wearable product including crimped textured nylon conductive filament.
  17. 根据权利要求16所述的产品，其特征在于，The product according to claim 16, characterized in that:
    所述卷曲变形锦纶导电长丝为如权利要求1～12任意一项所述的卷曲变形锦纶导电长丝。The crimped textured nylon conductive filament is the crimped textured nylon conductive filament according to any one of claims 1-12.
PCT/CN2019/078462 2019-03-18 2019-03-18 Crimped conductive polyamide filament, and manufacturing method therefor and application thereof WO2020186417A1 (en)

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Citations (4)

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WO2006137893A3 (en) * 2004-10-01 2007-06-21 Univ Texas Polymer-free carbon nanotube assemblies (fibers, ropes, ribbons, films)
CN104342803A (en) * 2013-07-31 2015-02-11 金泰线业(上海)有限公司 High-elastic, soft and fluffy sewing thread and production method thereof
CN107447283A (en) * 2017-08-31 2017-12-08 江苏中杰澳新材料有限公司 Texturized polyamide fibre electrically conductive filament, manufacture method and its application
CN107502975A (en) * 2017-08-31 2017-12-22 江苏中杰澳新材料有限公司 Texturized terylene electrically conductive filament, manufacture method and its application

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006137893A3 (en) * 2004-10-01 2007-06-21 Univ Texas Polymer-free carbon nanotube assemblies (fibers, ropes, ribbons, films)
CN104342803A (en) * 2013-07-31 2015-02-11 金泰线业(上海)有限公司 High-elastic, soft and fluffy sewing thread and production method thereof
CN107447283A (en) * 2017-08-31 2017-12-08 江苏中杰澳新材料有限公司 Texturized polyamide fibre electrically conductive filament, manufacture method and its application
CN107502975A (en) * 2017-08-31 2017-12-22 江苏中杰澳新材料有限公司 Texturized terylene electrically conductive filament, manufacture method and its application

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