CN109957856A - A kind of parallel composite fiber and preparation method thereof - Google Patents
A kind of parallel composite fiber and preparation method thereof Download PDFInfo
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- CN109957856A CN109957856A CN201711427472.5A CN201711427472A CN109957856A CN 109957856 A CN109957856 A CN 109957856A CN 201711427472 A CN201711427472 A CN 201711427472A CN 109957856 A CN109957856 A CN 109957856A
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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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
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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
- D01F1/10—Other agents for modifying properties
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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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
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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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Multicomponent Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The present invention provides a kind of parallel composite fiber and preparation method thereof, and heretofore described parallel composite fiber includes the first parallel construction and the second parallel construction, and the first parallel construction is polyamide 5X, and the second parallel construction is polyester and/or polyamide 6 X.The preparation method of the parallel composite fiber includes: 1) to converge the first parallel construction melt in composite spining module by respective melt pipe with the second parallel construction melt, is extruded into spun filament by composite spinneret arranged side by side；2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain the fiber.Composite fibre softness, good hygroscopicity, while there is three-dimensional crimp performance and elastomeric property, knitting and tatting field can be widely used in.
Description
Technical field
The invention belongs to textile technology fields, and in particular to a kind of parallel composite fiber.
Background technique
Parallel composite fiber produces the fiber of parallel construction using two kinds of different polymer materials of shrinkage, this
It is a kind of two kind condensates different by structure or performance, the Curl fiber made of bi-component composite spinning.Two kinds
The high polymer of different characteristics forms bi-component composite filament by composite spinning arranged side by side by a certain percentage.Due to parallel in fiber
Two components of column have different shrinkage and initial modulus.When composite fiber spinning drawing-off, two components generate identical elongation,
But different blockage effect then is generated since two component shrinkage stresses are different after heated, and two components are pasted together.Cause
This, shrinks phase mutual and coordinates restraining function, shrinks fast component and generates systolic pressure to slow component is shunk；Conversely, shrinking
Fast component is by the negative drawing power for shrinking slow component generation.When both active forces with contraction distortion to a certain extent
After reach balance, convergent force and drawing force partner couple, and under this force couple role, whole fiber spontaneously produces torsion,
Form the fiber of helix-coil.This curly fiber has different degrees of retractility and elasticity, therefore as spring
The key for obtaining helix-coil is that two components have potential shrinkage stress poor, this bi-component Curl fiber and natural
The Curl of wool is closely similar, assigns the good elasticity of fiber.
Application No. is the patents of CN101126180A (publication date: 2008-02-20) to disclose a kind of composite elastic fibre arranged side by side
Dimension and preparation method thereof, it is compound side by side by using any two kinds of polymer progress in high convergency PET, PBT or PTT, it is made
Compound interface is present in the peanut shaped section composite fiber of short-axis direction.The fiber can be seen that compound from fiber cross section
The center of gravity distance of two kinds of polymer wants larger compared to typical circular, this also results in the arranged side by side multiple of the elliptical cross sectional shape
Condensating fiber is after extending heat treatment, and generated spring like is crispaturaed in unit length, and number is on the low side, and elastic property cannot sufficiently expire
Foot requires, while production cost is higher, and fiber hygroscopicity is poor, modulus is big, causes fiber and fabric hand feel bad.
Application No. is CN103668552A (publication date: 2014-03-26) disclose a kind of nylon system composite fibre and its
Manufacturing method, the composite fibre are the parallel construction of two kinds of ingredients of A, B, and wherein A ingredient is nylon 6 or nylon66 fiber, and B component is
Main chain contains the nylon of phenyl ring or the blend alloy containing the nylon, flexible elongation of the composite fibre after heat treatment without load
Rate is 80% or more.Its nylon fiber has superior crimp property, i.e., usually said elastic property is excellent, can replace current one
As nylon fiber.But nylon 6 is mainly extracted from petroleum with flame-retardant nylon 66 raw material, and as petroleum is increasingly depleted, petroleum is mentioned in addition
Great amount of carbon dioxide is generated during taking, pollutes environment, generates greenhouse effects etc. serious consequence, and the moisture absorption of composite fibre
Property, wearability are bad.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of new parallel composite fiber, the composite fibres
Soft, good hygroscopicity, while there is three-dimensional crimp performance and elastomeric property, knitting and tatting field can be widely used in.
The present invention provides a kind of parallel composite fiber, and the parallel composite fiber includes that the first parallel construction and second are arranged side by side
Structure, the first parallel construction are polyamide 5X, and the second parallel construction is polyester and/or polyamide 6 X.
First parallel construction polyamide 5X weight content be 10-50wt%, preferably 15-45wt%, further preferably
20-40%；Second parallel construction polyester and/or polyamide 6 X weight content are 50-90wt%, preferably 55-85wt%, into one
Step is preferably 60-80%.
Wherein, polyamide 5X can be obtained by 1,5- pentanediamine and binary acid for monomer polymerization, in order to reduce environmental pollution,
1,5- pentanediamine, binary acid can be prepared by organism-based raw material by fermentation method or enzyme transforming process.
The binary acid includes the aliphatic dibasic acid of C6-20, it may be assumed that carbon atom number >=6 of aliphatic dibasic acid, preferably
For 8-20, more preferably 10-16；Specifically, binary acid includes: adipic acid, decanedioic acid, eleven carbon diacids, 12 carbon two
First acid, tridecanyldicarboxylic acid, tetradecane diacid, pentadecane binary acid, 16-dicarboxylic acid, seventeen carbon diacids, 18 carbon
Binary acid, maleic acid and Δ9- 1,18 octadecylene binary acid.
Except above-mentioned 1,5- pentanediamine and binary acid, the raw materials for production of the polyamide 5X can also contain other
Comonomer and/or additive；
Wherein, the comonomer include: aliphatic dicarboxylic acid, ester ring type dicarboxylic acids, aromatic dicarboxylic acid, ethylenediamine,
Hexamethylene diamine, cyclohexanediamine, benzene dimethylamine, 6-aminocaprolc acid, 11- amino undecanoic acid, 12 amino dodecanoic acid, to amino first
Any one or a few in yl benzoic acid, caprolactam and omega-lauric lactam；
The additive includes: delustering agent, fire retardant, antioxidant, ultraviolet absorbing agent, infrared absorbent, crystallization
Any one or a few in nucleating agent, fluorescent whitening agent and antistatic agent；
The additive amount of the additive accounts for the 0.001-10% of raw materials for production total weight.
Further, polyamide 5X is any one in polyamide 56, polyamide 510, polyamide 512 in the present invention
Kind；Polyester is selected from polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate (PBT), changes
Any one in property polyester；Polyamide 6 X is any one in polyamide 6, polyamide 66, polyamide 610, polyamide 612
Kind.
In addition, the present invention is not specially limited the cross-sectional shape of parallel composite fiber, can for circle, trilobal,
It is cross, triangle, three-pointed hollow star, I font, T-shaped, Y-shaped, pancake, pentagon, hexagon, octagonal, I-shaped
Or any one in dumb-bell shape.
The fiber number of heretofore described parallel composite fiber be 10-1000dtex, preferably 30-700dtex, further it is excellent
It is selected as 50-400dtex, is still more preferably 70-200dtex, much further preferably from 80-150dtex；
The breaking strength of the parallel composite fiber is 2.5-7.0cN/dtex, preferably 2.8-6.5cN/dtex, into one
Step is preferably 3.2-6.0cN/dtex, is still more preferably 3.8-5.5cN/dtex；
The elongation at break of the parallel composite fiber is 30-100%, preferably 40-90%, further preferably 50-
80%, it is still more preferably 60-70%；
The initial modulus of the parallel composite fiber be 20-60cN/dtex, preferably 25-55cN/dtex, further it is excellent
It is selected as 30-50cN/dtex, is still more preferably 35-45cN/dtex；
The regain of the parallel composite fiber is 1.0-6.0%, preferably 1.5-5.5%, further preferably 2.0-
5.0%, it is still more preferably 2.5-4.5%；
The crimp contraction of the parallel composite fiber is 50-80%, preferably 54-76%, further preferably 58-
70%, it is still more preferably 62-65%；Curling modulus is 20-50%, preferably 23-47%, further preferably 28-
42%, it is still more preferably 33-38%；Curling stability is 80-100%, preferably 82-98%, further preferably 86-
95%, it is still more preferably 88-92%；
Parallel composite fiber untreated elastic recovery rate 85-100%, the preferably 88-98%, further preferably
90-96% is still more preferably 92-94%；Elastic recovery rate 85-100% after processing, preferably 87-98%, it is further excellent
It is selected as 91-96%, is still more preferably 93-94%.
The present invention also provides the preparation methods of any of the above-described parallel composite fiber, comprising the following steps:
1) the first parallel construction melt and the second parallel construction melt are passed through into respective melt pipe in composite spinning
Component converges, and is extruded into spun filament by composite spinneret arranged side by side；
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain the fiber.
Wherein, step 1) the first parallel construction polyamide 5X melt can pass through above-mentioned 1,5- pentanediamine and binary
Acid polymerization, obtains polyamide 5X melt；Polyamide 5X resin can also be directly heated to molten condition, it is molten to obtain polyamide 5X
Body；
Wherein, the method for polyamide 5X melt being prepared by 1,5- pentanediamine and binary acid direct polymerization are as follows: in nitrogen item
Under part, 1,5- pentanediamine, dicarboxylic acids and water are uniformly mixed, the salting liquid of polyamide 5X is made；Wherein, 1,5- pentanediamine and
The molar ratio of dicarboxylic acids is (1-1.2): 1；Then the salting liquid of polyamide 5X is heated, pressure rises to 0.3- in reaction system
2.5Mpa, exhaust, pressure maintaining, then being depressured makes pressure in reaction system be down to gauge pressure 0-0.3MPa, is evacuated to vacuum degree -0.08
~-0.01Mpa obtains polyamide 5X melt；In the reaction process, the temperature of reaction system is 230-275 at the end of pressure maintaining
DEG C, the temperature of reaction system is 245-285 DEG C after decompression, and the temperature after vacuumizing is 250-280 DEG C.
In addition, based on the above method, the preparation of polyamide 5X can also be completed by addition monomer and additive,
The preparation method comprises the following steps: 1,5- pentanediamine, dicarboxylic acids, caprolactam and water is uniformly mixed under condition of nitrogen gas, be made polyamide 5X
Salting liquid, while fluorescent whitening agent is added；Wherein, the molar ratio of 1,5- pentanediamine and dicarboxylic acids is (1-1.08): 1,
Middle fluorescent whitening agent accounts for the 0.3wt% of salting liquid, and caprolactam accounts for the 3wt% of salting liquid；Then by the salting liquid of polyamide 5X
It heats, pressure rises to 0.25-2.3Mpa in reaction system, is vented, pressure maintaining, then being depressured makes pressure in reaction system be down to gauge pressure 0-
0.35MPa is evacuated to vacuum degree -0.08~-0.01Mpa, obtains polyamide 5X melt；In the reaction process, pressure maintaining knot
The temperature of reaction system is 232-277 DEG C when beam, and the temperature of reaction system is 248-283 DEG C, after vacuumizing after decompression
Temperature is 253-285 DEG C.
When selecting polyamide to directly heat preparation polyamide melt, the polyamide 5X resin 96wt% sulfuric acid
Relative viscosity is 2.0-4.0, preferably 2.2-3.6, more preferably 2.4-3.2；The moisture content of the polyamide 5X resin is 50-
1300ppm, preferably 200-1000ppm, more preferably 300-800ppm, further preferably 400-700ppm.
Further, above-mentioned directly heat polyamide 5X resin is carried out in screw extruder, the Screw Extrusion
Machine is divided into five Qu Jiare；
Wherein, area's temperature is 210-260 DEG C；
Two area's temperature are 22-280 DEG C；
Three area's temperature are 230-290 DEG C；
Four area's temperature are 240-300 DEG C；
Five area's temperature are 250-310 DEG C；
Preferably, 2nd area temperature is greater than a Qu Wendu；Three Qu Wendu, four Qu Wendu and/or institute
Five area's temperature are stated greater than a Qu Wendu and/or 2nd area temperature；
Similarly, polyester can be by terephthalic acid (TPA) and dihydric alcohol direct polymerization, wherein two in second parallel construction
First alcohol is selected from ethylene glycol, propylene glycol and butanediol, correspondingly forms polyethylene terephthalate, poly terephthalic acid the third two
Alcohol ester and polybutylene terephthalate (PBT) melt；The polyester resin can also be directly heated to molten condition, be formed molten
Body；Caprolactam polymerization can be formed polyamide 6 melt, hexamethylene diamine and binary by polyamide 6 X in second parallel construction
Carboxylic acid polymerization, forms polyamide 6 X melt；Polyamide 6 or polyamide 6 X resin can also be directly heated to molten condition, shape
At melt.
Further, above-mentioned directly heat polyester, polyamide 6 and polyamide 6 X is also to carry out in screw extruder
, which is divided into five Qu Jiare；
Wherein, area's temperature is 220-260 DEG C；
Two area's temperature are 230-280 DEG C；
Three area's temperature are 240-290 DEG C；
Four area's temperature are 250-300 DEG C；
Five area's temperature are 260-310 DEG C；
Preferably, 2nd area temperature is greater than a Qu Wendu；Three Qu Wendu, four Qu Wendu and/or institute
Five area's temperature are stated greater than a Qu Wendu and/or 2nd area temperature.
When selecting polyester resin to directly heat preparation polyamide melt, the polyester inherent viscosity is 0.6-1.2dL/g,
Preferably 0.7-1.1dL/g, more preferably 0.8-1.0dL/g；The moisture content of the polyester resin is 20-100ppm, preferably
30-90ppm, more preferably 40-80ppm, further preferably 50-70ppm.
When selecting polyamide to directly heat preparation polyamide melt, the polyamide 6, polyamide 6 X resin
The relative viscosity of 96wt% sulfuric acid is 2.0-4.0, preferably 2.2-3.6, more preferably 2.4-3.2；The polyamide 6, polyamides
The moisture content of amine 6X resin be 50-1300ppm, preferably 200-1000ppm, more preferably 300-800ppm, further preferably
For 400-700ppm.
In addition, the step 1) filament spinning component is located in spinning manifold；The temperature of the spinning manifold is 240-320 DEG C,
More preferably 250-310 DEG C, further preferably 260-300 DEG C are still more preferably 270-290 DEG C；The spinning manifold
Filament spinning component pressure be 10-25MPa, preferably 12-23MPa, further preferably 15-19Mpa.
The spun filament cool down in step 2), oil, is stretched, thermal finalization, coiling and molding, be to spun filament into
Row post-processing obtains the parallel composite fiber.
Wherein, described to be cooled to be cooled down by cross air blasting；The wind speed of the cross air blasting is 0.6-1.3m/s, preferably
0.8-1.1m/s；The wind-warm syndrome of the cross air blasting is 15-27 DEG C, preferably 18-25 DEG C, more preferably 20-23 DEG C；The cross air blasting
Humidity be 60-80%, preferably 68-73%.
The drawing process is 2 grades or more and stretches；Total draw ratio of the stretching is 1.5-5.0；The draft temperature
It is 50-150 DEG C, preferably 70-120 DEG C.
The temperature of the thermal finalization is 120-200 DEG C, preferably 140-180 DEG C.
The speed of the winding is 2200-5500m/min, preferably 2500-5000m/min, further preferably 3000-
3500m/min。
Heretofore described parallel composite fiber is soft, good hygroscopicity, while having three-dimensional crimp and elastomeric property, energy
Be widely used in knitting and tatting field, specifically, can be used in civilian aspect, as socks, underwear, shirt, sport shirt,
Blanket, swimming suit, outdoor clothing, sofa, down jackets, Western-style clothes, filler, luggage, sewing thread etc..
By adopting the above scheme, the beneficial effects of the present invention are:
The first, parallel composite fiber prepared by the present invention, soft, good hygroscopicity, while there is three-dimensional crimp performance and height
Elastic energy, can be widely used in knitting and tatting field.
The second, the polyamide 5X resin of selection of the invention is made of bioanalysis, is green material, provides independent of petroleum
Source and serious pollution is not caused to environment, and can reduce the discharge amount of carbon, reduces the generation of greenhouse effects.
Third, the preparation method of staple fiber of the invention are simple to operation, and production cost is low, are suitable for industrialized production.
Specific embodiment
The detection method of performance parameter involved in the present invention is as follows:
1) relative viscosity:
Pass through Ubbelohde viscometer sulphate method: polyamide 5X slice after precise is dry or its short fine sample 0.25 ±
0.0002g is added the 50mL concentrated sulfuric acid (96wt%) dissolution, measures and records concentrated sulfuric acid flow time in 25 DEG C of constant temperature water baths
T0 and polyamide sample solution flow time t.
Viscosity number calculation formula: relative viscosity=t/t0
T-solution flow time；
t0- solvent flow time.
2) inherent viscosity:
Solvent: phenol tetrachloroethane (1:1), by 1,490 1993 fiber polyester chip analysis method of GB/T.Characteristic is viscous
Degree=((1+1.4 (t/t0-1)) 0.5-1)/0.7c (unit dL/g), t are the delivery time of solution, when t0 is the outflow of solvent
Between, c is solution concentration.
3) breaking strength, elongation at break, modulus:
The measurement of breaking strength and elongation at break can refer to GB/T 14344-2008 chemical fibre Erichsen test
Method；Apply 0.05 ± 0.005cN/dtex pretension, accommodates distance 500mm, tensile speed 500mm/min.Modulus=fracture
Elongation corresponding breaking strength × 100 when being 1%.
4) regain:
The measuring method of regain are as follows: the fiber after washing is put into baking oven in a loose state and is dried, will dried
Fiber sample afterwards, which is placed in normal atmosphere as defined in GB/T6529, debugs balance, damping 2h.Sample after washing damping, into
The measurement of row regain, regain measuring method executes according to GB/T6503, and wherein the drying temperature of baking oven is 105 DEG C, when drying
Between be 1h.
5) crimp property
According to " the synthetic fibers textured filament crispatura method for testing performance " of GB/T6506-2001.
Crimp contraction=((L1-L2)/L1) × 100%；
Crimp modulus=((L1-L3)/L1) × 100%；
Crimp stability=((L4-L1)/(L1-L2)) × 100%；
L1: fiber bears the tension of 0.2cN/dtex, after continuing 10s, the fibre length of measurement；L2: fiber is born
The tension of 0.001cN/dtex, after continuing 10min, the fibre length of measurement；L3: fiber bears the tension of 0.01cN/dtex, holds
After continuous 10s, the fibre length of measurement；L4: fiber bears the tension of 1.0cN/dtex, after continuing 10s, the fibre length of measurement；
6) elastic recovery:
Untreated long filament, using electronics single yarn tester YG061,23 DEG C of environment temperature, humidity 65%.Sample holder away from
From for 250mm, tensile speed 500mm/min, determine that stretch value is set to clamping gauge 5%, 10%, 15%.
The long filament of (100 DEG C, 15min) after processing, using filamentary electrons strength tester LLY06,23 DEG C of environment temperature, humidity
65%, sample holder distance be 30mm, tensile speed 60mm/min, determine stretch value be set to clamp distance 50%,
100%, 150%.
Elastic recovery rate=((L-L1)/(L-L0)) in × 100% formula: L0For sample original length；L is stretched to for sample
Length after fixed elongation；L1Length after being resetted for sample.
Embodiment 1
1) 56 melt of polyamide and polyethylene terephthalate melt are passed through into respective melt pipe in composite spinning
Component converges, and is extruded into spun filament by composite spinneret arranged side by side；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and 56 content of the first parallel construction polyamide is 50wt%,
Second parallel construction polyethylene terephthalate content is 50wt%.
Wherein, the preparation method of 56 melt of polyamide is to be heated to melting in screw extruder by 56 resin of polyamide
State forms melt, and it is 245 DEG C which, which is divided into five Qu Jiare: one area's temperature, and two area's temperature are 250 DEG C, three Qu Wen
Degree is 265 DEG C, and four area's temperature are 275 DEG C, and five area's temperature are 280 DEG C；The relative viscosity of 56 resin 96wt% sulfuric acid of polyamide is
2.8, moisture content 300ppm；
The preparation method of polyethylene terephthalate melt is, by pet resin in screw rod
It is heated to molten condition in extruder, forms melt, it is 255 DEG C which, which is preferably divided into five Qu Jiare: one area's temperature,
Two area's temperature are 270 DEG C, and three area's temperature are 285 DEG C, and four area's temperature are 290 DEG C, and five area's temperature are 288 DEG C；Poly terephthalic acid
Glycol ester inherent viscosity is 0.65dL/g, moisture content 30ppm.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 285 DEG C, the filament spinning component pressure of spinning manifold
Power is 12MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.8m/s, wind-warm syndrome is 26 DEG C, and the humidity of cross air blasting is 68%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 2.5, and draft temperature is 80 DEG C, and the temperature of thermal finalization is 150 DEG C, winding speed
For 3500m/min.
Embodiment 2
1) 56 melt of polyamide and polypropylene terephthalate melt are passed through into respective melt pipe in composite spinning
Component converges, and is extruded into spun filament by composite spinneret arranged side by side；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and 56 content of the first parallel construction polyamide is 40wt%,
Second parallel construction polypropylene terephthalate content is 60wt%.
Wherein, the preparation method of 56 melt of polyamide is to be heated to melting in screw extruder by 56 resin of polyamide
State forms melt, and it is 246 DEG C which, which is divided into five Qu Jiare: one area's temperature,；Two area's temperature are 258 DEG C；Three Qu Wen
Degree is 266 DEG C；Four area's temperature are 278 DEG C；Five area's temperature are 285 DEG C；The relative viscosity of 56 resin 96wt% sulfuric acid of polyamide is
2.6, moisture content 500ppm；
The preparation method of polypropylene terephthalate melt is, by polytrimethylene terephthalate in screw rod
It is heated to molten condition in extruder, forms melt, it is 257 DEG C which, which is preferably divided into five Qu Jiare: one area's temperature,；
Two area's temperature are 276 DEG C；Three area's temperature are 283 DEG C；Four area's temperature are 290 DEG C；Five area's temperature are 284 DEG C；Poly terephthalic acid
Propylene glycol ester inherent viscosity is 1.0dL/g, moisture content 70ppm.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 284 DEG C, the filament spinning component pressure of spinning manifold
Power is 13MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.6m/s, wind-warm syndrome is 24 DEG C, and the humidity of cross air blasting is 65%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 2.8, and draft temperature is 70 DEG C, and the temperature of thermal finalization is 130 DEG C, winding speed
For 3800m/min.
Embodiment 3
1) 56 melt of polyamide and polybutylene terephthalate (PBT) melt are passed through into respective melt pipe in composite spinning
Component converges, and is extruded into spun filament by composite spinneret arranged side by side；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and 56 content of the first parallel construction polyamide is 45wt%,
Second parallel construction polybutylene terephthalate (PBT) content is 55wt%.
Wherein, the preparation method of 56 melt of polyamide is to polymerize pentanediamine and adipic acid, forms polyamide 56.Wherein,
The method for preparing 56 melt of polyamide by 1,5- pentanediamine and adipic acid direct polymerization are as follows: under a nitrogen atmosphere, by 1,5- penta
Diamines, adipic acid and water are uniformly mixed, and the salting liquid of polyamide 56 is made；Wherein, the molar ratio of 1,5- pentanediamine and adipic acid
For 1.08:1；Then the salting liquid of polyamide 56 is heated, pressure rises to 2.2Mpa in reaction system, is vented, pressure maintaining, then be depressured
So that pressure in reaction system is down to gauge pressure 0.1MPa, be evacuated to vacuum degree -0.09Mpa, obtains 56 melt of polyamide；It is anti-at this
During answering, the temperature of reaction system is 273 DEG C at the end of pressure maintaining, and the temperature of reaction system is 280 DEG C after decompression, is taken out true
Temperature after sky is 273 DEG C.The preparation method of polybutylene terephthalate (PBT) melt is, by polybutylene terephthalate (PBT)
Resin is heated to molten condition in screw extruder, forms melt, which is preferably divided into five Qu Jiare: one Qu Wen
Degree is 255 DEG C；Two area's temperature are 275 DEG C；Three area's temperature are 285 DEG C；Four area's temperature are 295 DEG C；Five area's temperature are 290 DEG C；It is poly-
Mutual-phenenyl two acid bromide two alcohol ester's inherent viscosity is 0.8dL/g, moisture content 90ppm.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 290 DEG C, the filament spinning component pressure of spinning manifold
Power is 15MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.5m/s, wind-warm syndrome is 27 DEG C, and the humidity of cross air blasting is 67%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 3.0, and draft temperature is 78 DEG C, and the temperature of thermal finalization is 140 DEG C, winding speed
For 4300m/min.
Embodiment 4
1) 56 melt of polyamide is converged by respective melt pipe in composite spining module with polyamide 6 melt, is passed through
Composite spinneret arranged side by side is extruded into spun filament；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and 56 content of the first parallel construction polyamide is 35wt%,
Second parallel construction polyamide 6 content is 65wt%.
Wherein, the preparation method of 56 melt of polyamide is to be heated to melting in screw extruder by 56 resin of polyamide
State forms melt, and it is 248 DEG C which, which is divided into five Qu Jiare: one area's temperature,；Two area's temperature are 262 DEG C；Three Qu Wen
Degree is 275 DEG C；Four area's temperature are 280 DEG C；Five area's temperature are 275 DEG C；The relative viscosity of 56 resin 96wt% sulfuric acid of polyamide is
2.5, moisture content 1000ppm；
The preparation method of polyamide 6 melt is that polyamide 6 is heated to molten condition, shape in screw extruder
At melt, it is 250 DEG C which, which is preferably divided into five Qu Jiare: one area's temperature,；Two area's temperature are 270 DEG C；Three Qu Wendu
It is 280 DEG C；Four area's temperature are 275 DEG C；Five area's temperature are 270 DEG C；The relative viscosity of polyamide 6 96wt% sulfuric acid is 2.7,
Moisture content is 800ppm.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 270 DEG C, the filament spinning component pressure of spinning manifold
Power is 14MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.9m/s, wind-warm syndrome is 26 DEG C, and the humidity of cross air blasting is 72%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 2.5, and draft temperature is 60 DEG C, and the temperature of thermal finalization is 160 DEG C, winding speed
For 4200m/min.
Embodiment 5
1) 56 melt of polyamide is converged by respective melt pipe in composite spining module with polyamide 66 melt, is passed through
Composite spinneret arranged side by side is extruded into spun filament；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and 56 content of the first parallel construction polyamide is 50wt%,
Second parallel construction polybutylene terephthalate (PBT) content is 50wt%.
Wherein, the preparation method of 56 melt of polyamide is, wherein the preparation method of 56 melt of polyamide is, by pentanediamine
It polymerize with adipic acid, forms polyamide 56.
The preparation method comprises the following steps: 1,5- pentanediamine, adipic acid, caprolactam and water is uniformly mixed under condition of nitrogen gas, be made poly-
The salting liquid of amide 56, while fluorescent whitening agent is added；Wherein, the molar ratio of 1,5- pentanediamine and adipic acid is 1.06:1,
Middle fluorescent whitening agent accounts for the 1.2wt% of salting liquid, and caprolactam accounts for the 1wt% of salting liquid；Then by the salting liquid of polyamide 56
It heating, pressure rises to 2.2Mpa in reaction system, it is vented, pressure maintaining, then being depressured makes pressure in reaction system be down to gauge pressure 0.3MPa,
It is evacuated to vacuum degree -0.01Mpa, obtains 56 melt of polyamide；In the reaction process, the temperature of reaction system at the end of pressure maintaining
Degree is 277 DEG C, and the temperature of reaction system is 282 DEG C after decompression, and the temperature after vacuumizing is 278 DEG C.
The preparation method of polyamide 66 melt is that polyamide 66 resin is heated to molten condition in screw extruder,
Melt is formed, it is 255 DEG C which, which is preferably divided into five Qu Jiare: one area's temperature,；Two area's temperature are 275 DEG C；Three Qu Wen
Degree is 285 DEG C；Four area's temperature are 295 DEG C；Five area's temperature are 290 DEG C；The relative viscosity of polyamide 66 resin 96wt% sulfuric acid is
2.4, moisture content 900ppm.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 290 DEG C, the filament spinning component pressure of spinning manifold
Power is 16MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.7m/s, wind-warm syndrome is 23 DEG C, and the humidity of cross air blasting is 75%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 2.8, and draft temperature is 70 DEG C, and the temperature of thermal finalization is 180 DEG C, winding speed
For 4500m/min.
Embodiment 6
1) 510 melt of polyamide and polypropylene terephthalate melt are passed through into respective melt pipe in composite spinning
Component converges, and is extruded into spun filament by composite spinneret arranged side by side；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and 510 content of the first parallel construction polyamide is 40wt%,
Second parallel construction polypropylene terephthalate content is 60wt%.
Wherein, the preparation method of 510 melt of polyamide is to be heated to melting in screw extruder by 510 resin of polyamide
Melt state, forms melt, it is 240 DEG C which, which is divided into five Qu Jiare: one area's temperature,；Two area's temperature are 250 DEG C；3rd area
Temperature is 260 DEG C；Four area's temperature are 270 DEG C；Five area's temperature are 280 DEG C；The relative viscosity of 510 resin 96wt% sulfuric acid of polyamide
It is 2.5, moisture content 600ppm；
The preparation method of poly terephthalic acid propylene glycol melt is, by poly terephthalic acid propylene glycol resin in Screw Extrusion
It is heated to molten condition in machine, forms melt, it is 255 DEG C which, which is preferably divided into five Qu Jiare: one area's temperature,；2nd area
Temperature is 265 DEG C；Three area's temperature are 275 DEG C；Four area's temperature are 285 DEG C；Five area's temperature are 280 DEG C；Poly terephthalic acid the third two
Alcohol resin inherent viscosity is 0.95dL/g, moisture content 50ppm.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 280 DEG C, the filament spinning component pressure of spinning manifold
Power is 13MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.5m/s, wind-warm syndrome is 28 DEG C, and the humidity of cross air blasting is 65%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 3.0, and draft temperature is 75 DEG C, and the temperature of thermal finalization is 160 DEG C, winding speed
For 3200m/min.
Embodiment 7
1) 512 melt of polyamide is converged by respective melt pipe in composite spining module with polyamide 6 melt, is passed through
Composite spinneret arranged side by side is extruded into spun filament；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and 512 content of the first parallel construction polyamide is 50wt%,
Second parallel construction polyamide 6 content is 50wt%.
Wherein, the preparation method of 512 melt of polyamide is to be heated to melting in screw extruder by 512 resin of polyamide
Melt state, forms melt, it is 242 DEG C which, which is divided into five Qu Jiare: one area's temperature,；Two area's temperature are 258 DEG C；3rd area
Temperature is 268 DEG C；Four area's temperature are 276 DEG C；Five area's temperature are 270 DEG C；The relative viscosity of 512 resin 96wt% sulfuric acid of polyamide
It is 2.5, moisture content 600ppm；
The preparation method of polyamide 6 melt is that polyamide 6 is heated to molten condition, shape in screw extruder
At melt, it is 250 DEG C which, which is preferably divided into five Qu Jiare: one area's temperature,；Two area's temperature are 260 DEG C；Three Qu Wendu
It is 270 DEG C；Four area's temperature are 282 DEG C；Five area's temperature are 275 DEG C.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 270 DEG C, the filament spinning component pressure of spinning manifold
Power is 11MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.7m/s, wind-warm syndrome is 25 DEG C, and the humidity of cross air blasting is 68%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 2.5, and draft temperature is 65 DEG C, and the temperature of thermal finalization is 170 DEG C, winding speed
For 4800m/min.
Comparative example 1
1) polyethylene terephthalate melt and polypropylene terephthalate melt are passed through into respective melt pipe
Road converges in composite spining module, is extruded into spun filament by composite spinneret arranged side by side；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and the first parallel construction polyethylene terephthalate contains
Amount is 50wt%, and the second parallel construction polypropylene terephthalate content is 50wt%.
Wherein, the preparation method of polyethylene terephthalate melt is, by pet resin
It is heated to molten condition in screw extruder, forms melt, it is 244 which, which is divided into five Qu Jiare: one area's temperature,
℃；Two area's temperature are 266 DEG C；Three area's temperature are 278 DEG C；Four area's temperature are 286 DEG C；Five area's temperature are 290 DEG C；Poly- terephthaldehyde
Sour glycol ester inherent viscosity is 0.67dL/g, moisture content 50ppm；
The preparation method of polypropylene terephthalate melt is, by polytrimethylene terephthalate in screw rod
It is heated to molten condition in extruder, forms melt, it is 255 DEG C which, which is preferably divided into five Qu Jiare: one area's temperature,；
Two area's temperature are 270 DEG C；Three area's temperature are 280 DEG C；Four area's temperature are 290 DEG C；Five area's temperature are 290 DEG C；Poly terephthalic acid
Propylene glycol ester inherent viscosity is 1.0dL/g, moisture content 80ppm.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 290 DEG C, the filament spinning component pressure of spinning manifold
Power is 13MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.6m/s, wind-warm syndrome is 28 DEG C, and the humidity of cross air blasting is 65%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 3.0, and draft temperature is 90 DEG C, and the temperature of thermal finalization is 160 DEG C, winding speed
For 4500m/min.
Comparative example 2
1) polyethylene terephthalate melt and polybutylene terephthalate (PBT) melt are passed through into respective melt pipe
Road converges in composite spining module, is extruded into spun filament by composite spinneret arranged side by side；
Compounding ingredients ratio arranged side by side is accurately adjusted by metering pump, and the first parallel construction polyethylene terephthalate contains
Amount is 50wt%, and the second parallel construction polybutylene terephthalate (PBT) content is 50wt%.
Wherein, the preparation method of polyethylene terephthalate melt is, by pet resin
It is heated to molten condition in screw extruder, forms melt, it is 250 which, which is divided into five Qu Jiare: one area's temperature,
℃；Two area's temperature are 265 DEG C；Three area's temperature are 275 DEG C；Four area's temperature are 285 DEG C；Five area's temperature are 295 DEG C；Poly- terephthaldehyde
Sour glycol ester inherent viscosity is 0.65dL/g, moisture content 40ppm；
The preparation method of polybutylene terephthalate (PBT) melt is, by polybutylene terephthalate (PBT) resin in screw rod
It is heated to molten condition in extruder, forms melt, it is 258 DEG C which, which is preferably divided into five Qu Jiare: one area's temperature,；
Two area's temperature are 273 DEG C；Three area's temperature are 285 DEG C；Four area's temperature are 290 DEG C；Five area's temperature are 288 DEG C；Poly terephthalic acid
Butanediol ester inherent viscosity is 0.8dL/g, moisture content 70ppm.
Melt is squeezed out through the spinneret of spinning manifold, and the temperature of spinning manifold is 290 DEG C, the filament spinning component pressure of spinning manifold
Power is 13MPa.
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain parallel composite fiber；
It is cooled down by cross air blasting, wind speed 0.7m/s, wind-warm syndrome is 25 DEG C, and the humidity of cross air blasting is 60%；It stretched
Journey is 2 grades of stretchings, and total draw ratio of stretching is 2.0, and draft temperature is 80 DEG C, and the temperature of thermal finalization is 150 DEG C, winding speed
For 3300m/min.
Fibre property in 1 embodiment of table and comparative example
Fibre property in 2 embodiment of table and comparative example
Claims (13)
1. a kind of parallel composite fiber, which is characterized in that the parallel composite fiber includes that the first parallel construction and second are arranged side by side
Structure, first parallel construction are polyamide 5X, and second parallel construction is polyester and/or polyamide 6 X.
2. parallel composite fiber as described in claim 1, the first parallel construction polyamide 5X weight content is 10-
50wt%, preferably 15-45wt%, further preferably 20-40%；The second parallel construction polyester and/or polyamide 6 X
Weight content is 50-90wt%, preferably 55-85wt%, further preferably 60-80%.
3. parallel composite fiber as claimed in claim 1 or 2, the polyamide 5X is selected from polyamide 56, polyamide 510, gathers
Any one in amide 512；The polyester is selected from polyethylene terephthalate, polypropylene terephthalate, gathers
Any one in mutual-phenenyl two acid bromide two alcohol ester, modified poly ester；The polyamide 6 X is selected from polyamide 6, polyamide 66, polyamides
Any one in amine 610, polyamide 612.
4. a kind of parallel composite fiber as described in any one of claims 1-3, the initial modulus of the fiber is 20-60cN/
Dtex, regain 1.0-6.0%.
5. a kind of parallel composite fiber as described in any one of claims 1-3, the fiber crimp contraction rate is 50-80%,
Curling modulus is 20-50%, and curling stability is 80-100%.
6. a kind of parallel composite fiber as described in any one of claims 1-3, the untreated elastic recovery rate of fiber is 85-
100%, elastic recovery rate is 85-100% after processing.
7. a kind of parallel composite fiber as described in any one of claims 1-3, the fiber number of the fiber is 10-1000dtex,
Breaking strength is 2.5-7.0cN/dtex, elongation at break 30-100%.
8. a kind of preparation method of such as described in any item parallel composite fibers of claim 1-7, it is characterised in that: the preparation
Method includes the following steps:
1) the first parallel construction melt and the second parallel construction melt are passed through into respective melt pipe in composite spining module
Converge, spun filament is extruded by composite spinneret arranged side by side；
2) spun filament cool down, oil, stretched, thermal finalization, coiling and molding, obtain the fiber.
9. the preparation method of parallel composite fiber as claimed in claim 8, filament spinning component described in step 1) is located at manifold
In vivo, the temperature of spinning manifold is 240-320 DEG C, and filament spinning component pressure is 10-25MPa.
10. being cooled to pass through side described in step 2) such as parallel composite fiber preparation method according to claim 8 or claim 9
Blowing is cooled down；The wind speed of the cross air blasting is 0.6-1.3m/s, and wind-warm syndrome is 15-27 DEG C, humidity 60-80%.
11. being stretched as 2 grades described in step 2) such as the preparation method of the described in any item parallel composite fibers of claim 8-10
It is above to stretch；Total draw ratio of the stretching is 1.5-5.0；The draft temperature of the stretching is 50-150 DEG C.
12. such as the preparation method of the described in any item parallel composite fibers of claim 8-11, thermal finalization described in step 2)
Temperature is 120-200 DEG C.
13. such as the preparation method of the described in any item parallel composite fibers of claim 8-12, the speed of winding described in step 2)
Degree is 2200-5500m/min.
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| CN110644073A (en) * | 2019-09-09 | 2020-01-03 | 浙江恒澜科技有限公司 | Preparation method of polyester-nylon parallel composite elastic fiber |
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| CN111118660A (en) * | 2019-12-12 | 2020-05-08 | 浙江恒澜科技有限公司 | High-elasticity polyester-nylon parallel composite fiber and preparation method thereof |
| CN111118660B (en) * | 2019-12-12 | 2022-04-01 | 浙江恒澜科技有限公司 | High-elasticity polyester-nylon parallel composite fiber and preparation method thereof |
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| CN111100308B (en) * | 2019-12-23 | 2022-09-13 | 浙江恒逸石化研究院有限公司 | Preparation method of antistatic polyester-nylon parallel composite elastic fiber of graphene |
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| CN114293278B (en) * | 2020-09-22 | 2024-02-23 | 上海凯赛生物技术股份有限公司 | Polyamide 5X fully drawn yarn and preparation method and application thereof |
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