CN106702508A - Method for preparing high strength synthetic fibers by sectional drafting at high temperature - Google Patents
Method for preparing high strength synthetic fibers by sectional drafting at high temperature Download PDFInfo
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- CN106702508A CN106702508A CN201611044500.0A CN201611044500A CN106702508A CN 106702508 A CN106702508 A CN 106702508A CN 201611044500 A CN201611044500 A CN 201611044500A CN 106702508 A CN106702508 A CN 106702508A
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- temperature
- fiber
- leading portion
- back segment
- high temperature
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- 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
- D01F1/10—Other agents for modifying properties
-
- 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
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/14—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
-
- 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
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- 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
- D02J3/00—Modifying the surface
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a method for preparing high strength synthetic fibers by sectional drafting at high temperature. The method comprises the following steps that melt spinning or melt extrusion, cooling, segmenting and drawing at high temperature, heat setting, and fiber surface treatment of synthetic resin, and the segmenting and drawing at high temperature independently control of temperature on the forepart and latter part of an oven, and the temperature of the latter part is higher than that of the forepart. According to the method, the temperature is adjusted correspondingly in accordance with different positions of the orientation crystallization of the fiber molecular chain in the oven, and the fiber strength is greatly improved. The method can be widely applied to the preparation of a variety of fibers to greatly improve the usability of fibers.
Description
Technical field
The present invention relates to a kind of preparation method of synthetic fibers, belong to macromolecule material preparation area.
Background technology
Synthetic fibers have the advantages that good intensity high, low cost, chemical stability, acid and alkali-resistance, resistance to microorganism, wear-resisting,
It is widely used in the numerous areas such as building materials, security protection, space flight and aviation, medical treatment, physical culture, electronics, military affairs.Its basic preparation
Melt spinning or melting extrusion, cooling, high temperature drawing-off, thermal finalization, Fiber strength and winding of the flow for synthetic resin.
CN1401021A discloses a kind of manufacture method of high strength polyester amide fiber.Its production technology is by polyester acyl
After amine copolymer thing melt spinning, cooled down at the temperature below 20 DEG C, obtain the undrawn filament of non-crystalline state, passed through afterwards
Drawing by high temperature at 70~110 DEG C of one or more baking ovens, total drawing ratio is more than 4.5 times, obtains the fiber of high intensity.
CN 1448546A disclose a kind of preparation method of superhigh intensity ultra-high modulus polyethylene fiber.Its method be by
Polyethylene carries out multiple tracks high drafting treatment respectively by melting extrusion, after manifold carries out spinneret in multiple baking ovens, leads
General times are stretched for more than 70 times.
CN 1515711A disclose a kind of preparation method of High-strength polypropylene fiber.Its method is molten by polypropylene
Melt melting extrusion on spinning-drawing machine, be wound, undrawn yarn is carried out twice drawing-off heat with together with respectively in two baking ovens afterwards
It is lax.First normal temperature preliminary draft, second drawing temperature is 90~140 DEG C.
CN 101899722A disclose a kind of preparation method of the polyvinyl alcohol coarse denier fiber of high strength and modulus.Its side
Method is by after single screw extrusion machine melting extrusion, multistage drawing being carried out in multiple 120~150 DEG C oven heats by polyvinyl alcohol
After extending 10~16 times, high temperature thermal finalization is carried out, so as to obtain fiber.
In whole fiber manufacturing process, high temperature drawing-off improves the committed step of fibre strength.The oven heat of high temperature drawing-off
Length is generally more long, is 4~7 meters, and fiber is in this segment distance, it may occur that substantial amounts of oriented crystalline, excellent such that it is able to show
Different mechanical property.However, in current technology and disclosed patent, the enhanced multiple of institute's energy is limited, can not reach non-
Normal preferably effect.
The content of the invention
In order to solve the above problems, the present invention provides a kind of preparation method of high strength synthetic fibre.
Technical scheme is as follows：
A kind of method that one high temperature sectional drawing-off prepares high strength synthetic fibre, it is characterised in that comprise the following steps：
Synthetic resin melt spinning or melting extrusion, cooling, segmented high-temperature drawing-off, thermal finalization, wherein the segmented high-temperature drawing-off is baking
The leading portion and back segment independence regulating and controlling temperature of case, and the temperature of back segment is higher than leading portion.
Preferred leading portion heating-up temperature is 30~200 DEG C, and back segment heating-up temperature is 50~300 DEG C.
Preferred draft ratio is 1~50 times.
Preferred leading portion heating and the length ratio of back segment heating are 1:5~5:1, further preferred leading portion heating with it is rear
The length ratio of Duan Jiare is 1:3~3:1.
The synthetic resin can be polypropylene, polyethylene, polyacrylonitrile fibre, polyester, polyamide, polyvinyl alcohol, poly-
Vinyl formal, PET, polyphenyl imidazoles, polytetrafluoroethylene (PTFE), PPTA, polyamides
One or more mixtures in imines.
Modifying agent, modified resin or modified filler are may include in the synthetic resin.
The modifying agent, modified resin or modified filler be preferably silane coupler Si-69, KH570, KH550, KH151,
Silica gel antiblocking agent, titanate coupling agent, aluminate coupling agent, tetraethyl orthosilicate (TEOS), Masterbatch, plasticising master batch, resistance to height
Warm master batch, anti-corrosion master batch, foam eliminating mother particle, inorganic matter ultra-fine grain, maleic anhydride inoculated polypropylene, maleic anhydride are grafted poly- second
The mixture of any one or more in alkene, polyethylene glycol, poly adipate succinic acid ester, polycaprolactone.
Fiber strength is carried out after preferred thermal finalization, the Fiber strength is preferably impression and/or surface changes
Property.
Technique effect of the invention is as follows：
The present invention proposes a kind of one high temperature sectional drawing-off and prepares the method for high strength synthetic fibre to prepare high intensity
Synthetic fibers, in high temperature drafting process, one high temperature sectional drawing-off is carried out using a baking oven, the leading portion and back segment of baking oven can
Independent regulating and controlling temperature, temperature adjusting scope is 30~300 DEG C.The setting of temperature depends on species, the draft speed of synthetic resin.
Draft ratio is realized that the drawing-off time by the length and draft speed of baking oven then by then coming true by the roller bearing speed difference of baking oven both sides
It is fixed.
When fiber just enter baking oven, when being in the front-end position of baking oven, its own temperature it is relatively low, it is necessary to one heating
Process, now the crystallinity of fiber is low, and the heat for being absorbed is relatively low, therefore sets relatively low temperature, realizes one preferably
Preheating, will not overactivity fiber strand, it is ensured that the degree of orientation of follow-up strand.When fiber be stretched to baking oven after
During fragment position, strand can start substantial amounts of oriented crystalline, now need energy higher, therefore set temperature higher, no
Because heat absorption is inadequate crystallization can be caused insufficient.Difference of the oriented crystalline situation according to fiber molecule chain of the invention in baking oven
Position carries out corresponding temperature adjustment, and fibre strength is greatly improved.
The present invention can be widely used in the preparation of multiple fiber, substantially increase the performance of fiber.
Brief description of the drawings
Fig. 1 is embodiment of the present invention device and schematic flow sheet.
Specific embodiment
In order to be better understood from the present invention, the present invention is further solved with reference to specific embodiment and accompanying drawing
Release.
Embodiment 1
The present embodiment is applied to prepare High-strength polypropylene fiber, and preparation process is as illustrated, comprise the following steps：
By acrylic resin, maleic anhydride inoculated polypropylene, Masterbatch, high temperature resistant master batch, anti-corrosion master batch and foam eliminating mother particle
After being sufficiently mixed uniformly, single screw extrusion machine melting extrusion is added to.After fiber extrusion, cooled down in cooling water immediately, obtained
The undrawn yarn of non-crystalline state.Fiber carries out segmented high-temperature drawing-off, and heated oven total length is 6m, leading portion heating plate length
2m, temperature is 140 DEG C, back segment heating plate length 4m, and temperature is 150 DEG C, and there are a roller bearing, first rolling in the two ends of baking oven respectively
The rotating speed of axle is five meters every point, and second rotating speed of roller bearing is 50 meters every point, and draft ratio is 10 times.Fiber after drawing-off, enters
Row high temperature thermal finalization, heat setting temperature be 120 DEG C, the roller bearing of thermal finalization baking oven is identical with the roller rotation rate of baking oven rear end, also for
50 meters every point.Shaping time is 40s.Afterwards, impression, modified, packaging are carried out to fiber and is cut off, finished product.The present embodiment
Polypropylene fibre tensile strength reach 450MPa, stretch modulus reaches 7GPa, more fine than using polypropylene obtained in conventional method
Dimension intensity improves 25%.
Embodiment 2
The present embodiment is applied to prepare high strength polyester amide fiber, and preparation process is comprised the following steps：
After by nylon 6 and poly adipate succinic acid ester copolymerization, single screw extrusion machine melting extrusion is added to.Fiber is extruded
Afterwards, cooled down in cooling water immediately, obtain the undrawn yarn of non-crystalline state.Fiber carries out segmented high-temperature drawing-off, heated oven
Total length is 6m, and leading portion heating plate length 3m, temperature is 70 DEG C, and back segment heating plate length 3m, temperature is 80 DEG C, and draft ratio is
10 times.Rate control method is with embodiment 1.Fiber after drawing-off, carries out thermal finalization, packaging and cuts off, finished product.This implementation
The polyesteramide fibre tensile strength of example reaches 800MPa, and stretch modulus reaches 6GPa, than using polyester obtained in conventional method
Nylon intensity improves 30%.
Embodiment 3
The present embodiment is applied to prepare high strength poly vinyl alcohol fiber, and preparation process is comprised the following steps：
By polyvinyl alcohol it is swelling after be added to single screw extrusion machine melting extrusion.Fiber extrusion after, freezed, alcoholysis and
Neutralisation treatment.Fiber carries out segmented high-temperature drawing-off, and heated oven total length is 6m, leading portion heating plate length 4m, and temperature is 140
DEG C, back segment heating plate length 2m, temperature is 150 DEG C, and draft ratio is 8 times.Rate control method is with embodiment 1.After drawing-off
Fiber, thermal finalization, packaging is carried out at 220 DEG C and is cut off, finished product.The vinal tensile strength of the present embodiment reaches
To 700MPa, stretch modulus reaches 25GPa, than improving 15% using vinal intensity obtained in conventional method.
The present invention preferably specific embodiment is the foregoing is only, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
The specific adjustment of such as front and back end temperature, should all be included within the scope of the present invention.Therefore, protection scope of the present invention
Should be defined by the protection domain of claims.
Claims (10)
1. a kind of method that one high temperature sectional drawing-off prepares high strength synthetic fibre, it is characterised in that comprise the following steps：Close
Resin melt spinning or melting extrusion, cooling, segmented high-temperature drawing-off, thermal finalization, wherein the segmented high-temperature drawing-off is baking oven
Leading portion and back segment independence regulating and controlling temperature, and back segment temperature be higher than leading portion.
2. method according to claim 1, it is characterised in that leading portion heating-up temperature is 30~200 DEG C, back segment heating-up temperature
It is 50~300 DEG C.
3. method according to claim 1, it is characterised in that draft ratio is 1~50 times.
4. method according to claim 1, it is characterised in that it is 1 that leading portion is heated with the length ratio of back segment heating:5~5:
1。
5. method according to claim 4, it is characterised in that it is 1 that leading portion is heated with the length ratio of back segment heating:3~3:
1。
6. method according to claim 1, it is characterised in that the synthetic resin is polypropylene, polyethylene, polyacrylonitrile
Fiber, polyester, polyamide, polyvinyl alcohol, polyvinyl formal, PET, polyphenyl imidazoles, polytetrafluoroethyl-ne
One or more mixtures in alkene, PPTA, polyimides.
7. method according to claim 1, it is characterised in that the synthetic resin includes modifying agent, modified resin or changes
Property filler.
8. method according to claim 7, it is characterised in that the modifying agent, modified resin or modified filler are silane idol
Connection agent Si-69, KH570, KH550, KH151, silica gel antiblocking agent, titanate coupling agent, aluminate coupling agent, tetraethyl orthosilicate
(TEOS), Masterbatch, plasticising master batch, high temperature resistant master batch, anti-corrosion master batch, foam eliminating mother particle, inorganic matter ultra-fine grain, maleic anhydride connect
Branch polypropylene, maleic anhydride grafted polyethylene, polyethylene glycol, poly adipate succinic acid ester, in polycaprolactone any one or it is many
The mixture planted.
9. method according to claim 1, it is characterised in that Fiber strength is carried out after thermal finalization.
10. according to the method described in claim 9, it is characterised in that the Fiber strength is that impression and/or surface are modified.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611044500.0A CN106702508B (en) | 2016-11-22 | 2016-11-22 | Method for preparing high-strength synthetic fiber by one-step high-temperature sectional drafting |
| PCT/CN2017/111905 WO2018095296A1 (en) | 2016-11-22 | 2017-11-20 | Method of manufacturing high-strength synthetic fiber utilizing high-temperature multi-sectional drawing |
| US16/462,578 US11390965B2 (en) | 2016-11-22 | 2017-11-20 | Method of manufacturing high-strength synthetic fiber utilizing high-temperature multi-sectional drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611044500.0A CN106702508B (en) | 2016-11-22 | 2016-11-22 | Method for preparing high-strength synthetic fiber by one-step high-temperature sectional drafting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106702508A true CN106702508A (en) | 2017-05-24 |
| CN106702508B CN106702508B (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611044500.0A Active CN106702508B (en) | 2016-11-22 | 2016-11-22 | Method for preparing high-strength synthetic fiber by one-step high-temperature sectional drafting |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829160A (en) * | 2017-12-26 | 2018-03-23 | 中维化纤股份有限公司 | One kind is without dye industrial color silk of polyamide fibre 66 and preparation method thereof |
| WO2018095296A1 (en) * | 2016-11-22 | 2018-05-31 | 殷石 | Method of manufacturing high-strength synthetic fiber utilizing high-temperature multi-sectional drawing |
| CN111334888A (en) * | 2020-03-18 | 2020-06-26 | 四川大学 | Modification method of meta-aromatic polyamide spinning solution |
| CN112962160A (en) * | 2021-03-26 | 2021-06-15 | 江苏达胜伦比亚生物科技有限公司 | Solvent method for preparing vinylon |
| CN113201805A (en) * | 2021-03-30 | 2021-08-03 | 新疆蓝山屯河化工股份有限公司 | Preparation method of PBAT fiber |
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| CN101568673A (en) * | 2006-12-21 | 2009-10-28 | 可隆株式会社 | Method of preparing flame-retardant polyester fiber and flame-retardant polyester fiber |
| CN101050562A (en) * | 2007-04-25 | 2007-10-10 | 华东理工大学 | Monofilament fiber in polyolefin class |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018095296A1 (en) * | 2016-11-22 | 2018-05-31 | 殷石 | Method of manufacturing high-strength synthetic fiber utilizing high-temperature multi-sectional drawing |
| US11390965B2 (en) | 2016-11-22 | 2022-07-19 | Shi Yin | Method of manufacturing high-strength synthetic fiber utilizing high-temperature multi-sectional drawing |
| CN107829160A (en) * | 2017-12-26 | 2018-03-23 | 中维化纤股份有限公司 | One kind is without dye industrial color silk of polyamide fibre 66 and preparation method thereof |
| CN111334888A (en) * | 2020-03-18 | 2020-06-26 | 四川大学 | Modification method of meta-aromatic polyamide spinning solution |
| CN111334888B (en) * | 2020-03-18 | 2021-07-27 | 四川大学 | Modification method of meta-aromatic polyamide spinning solution |
| CN112962160A (en) * | 2021-03-26 | 2021-06-15 | 江苏达胜伦比亚生物科技有限公司 | Solvent method for preparing vinylon |
| CN113201805A (en) * | 2021-03-30 | 2021-08-03 | 新疆蓝山屯河化工股份有限公司 | Preparation method of PBAT fiber |
| CN113201805B (en) * | 2021-03-30 | 2022-07-15 | 新疆蓝山屯河科技股份有限公司 | Preparation method of PBAT fiber |
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