CN111172608A - Heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber material and preparation method thereof - Google Patents
Heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber material and preparation method thereof Download PDFInfo
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- CN111172608A CN111172608A CN202010097732.2A CN202010097732A CN111172608A CN 111172608 A CN111172608 A CN 111172608A CN 202010097732 A CN202010097732 A CN 202010097732A CN 111172608 A CN111172608 A CN 111172608A
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- 229920002647 polyamide Polymers 0.000 title claims abstract description 156
- 239000004952 Polyamide Substances 0.000 title claims abstract description 154
- 230000003578 releasing effect Effects 0.000 title claims abstract description 38
- 210000004243 sweat Anatomy 0.000 title claims abstract description 38
- 239000002657 fibrous material Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 60
- 239000000835 fiber Substances 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 238000009987 spinning Methods 0.000 claims abstract description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 60
- 239000006185 dispersion Substances 0.000 claims description 47
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 30
- 235000019253 formic acid Nutrition 0.000 claims description 30
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 19
- 239000011259 mixed solution Substances 0.000 claims description 16
- 239000007822 coupling agent Substances 0.000 claims description 14
- 238000005345 coagulation Methods 0.000 claims description 11
- 230000015271 coagulation Effects 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 10
- 238000009775 high-speed stirring Methods 0.000 claims description 10
- 230000003311 flocculating effect Effects 0.000 claims description 9
- 238000010008 shearing Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 7
- 230000006870 function Effects 0.000 claims description 7
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- 238000002604 ultrasonography Methods 0.000 claims description 7
- 229910052582 BN Inorganic materials 0.000 claims description 6
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000002036 drum drying Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 5
- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 3
- 229910009818 Ti3AlC2 Inorganic materials 0.000 claims description 3
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 claims description 3
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 125000000524 functional group Chemical group 0.000 abstract description 2
- 230000003993 interaction Effects 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 14
- 238000002156 mixing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010445 mica Substances 0.000 description 4
- 229910052618 mica group Inorganic materials 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical compound C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 1
- REPVLJRCJUVQFA-UHFFFAOYSA-N (-)-isopinocampheol Natural products C1C(O)C(C)C2C(C)(C)C1C2 REPVLJRCJUVQFA-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229940116229 borneol Drugs 0.000 description 1
- CKDOCTFBFTVPSN-UHFFFAOYSA-N borneol Natural products C1CC2(C)C(C)CC1C2(C)C CKDOCTFBFTVPSN-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- DTGKSKDOIYIVQL-UHFFFAOYSA-N dl-isoborneol Natural products C1CC2(C)C(O)CC1C2(C)C DTGKSKDOIYIVQL-UHFFFAOYSA-N 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
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- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
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- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
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- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- 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
- 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
Abstract
The invention discloses a heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber material and a preparation method thereof. The invention synchronously realizes the strong interaction between the heat conduction material and the polyamide material and ensures that the heat conduction material is uniformly dispersed in the polymer. The polyamide-based composite fiber prepared by the method has excellent mechanical properties, heat conduction cool feeling and moisture absorption and sweat releasing effects by using the existence of hydrophilic functional groups in the polyamide material and the construction of a microscopic special-shaped groove structure on the surface of the fiber in the spinning process.
Description
Technical Field
The invention relates to the field of functional fiber preparation, in particular to heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber and a preparation method thereof.
Background
With the improvement of requirements of people on healthy, environment-friendly and comfortable textiles, the development of functionalized and differentiated fibers becomes the development direction of the chemical fiber industry. Polyamide fiber (having a thermal conductivity of 0.26 to 0.35W/m.k) is an indispensable fiber variety in the field of civil textiles as a synthetic fiber having excellent mechanical properties and good textile processability. The development of the polyamide fiber with heat conduction and cool feeling, moisture absorption and sweat releasing has obvious practical significance for manufacturing cool and refreshing fabric and ready-made clothes in summer. The action mechanism of the cool fiber can be realized by accelerating the evaporation of sweat, for example, the cross section of the fiber is designed into a hollow four-tube structure, so that the capillary effect of the fiber is greatly increased, and the increase of the specific surface area endows the fiber-made fabric with excellent moisture absorption and sweat releasing performance, thereby realizing the functions of comfort and coolness. However, air has a very low thermal conductivity, and the cooling brought by the hollow tubular structure fibers comes from the heat taken away by the moisture absorption and sweat releasing evaporation process. The cool fiber can be prepared by designing a skin-core composite structure fiber, for example, the skin layer of the fiber is designed to be polyvinyl alcohol with strong hygroscopicity, the core layer is polyester or polyamide fiber, the polyvinyl alcohol on the surface layer has hydrophilic groups, and the cool feeling is realized through heat conduction and evaporation heat dissipation of moisture, however, the comfort of wearing the clothes on the human body can be seriously influenced by the strong hygroscopicity of the skin layer of the fiber. And a method for achieving a cooling effect by adding inorganic particle substances such as jade powder, mica powder and borneol into the fibers and improving the heat-conducting property of the fibers is also provided, however, the inorganic particles have small particle size, and the inert particle surfaces are easy to self-aggregate to form aggregates with larger size, so that the smooth proceeding of the melt spinning process is seriously influenced. Therefore, the cooling function of the fiber material is essentially solved by heat conduction, and how to realize uniform dispersion and high-content addition of the heat-conducting powder in the master batch with the high heat-conducting function for spinning needs to be solved firstly. In the past, the melt mixing screw extrusion is usually used for preparing the polyamide master batch with the high heat conduction function, but the addition of the inorganic powder can reduce the flow property of a melt, so that the high-dosage addition of the heat conduction material is difficult to realize, and on the other hand, the melt mixing process can cause the breakage and degradation of a polyamide molecular chain and influence the mechanical property of the fiber.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber material and a preparation method thereof, wherein the cool-feeling function of a fabric is realized by improving the heat conductivity coefficient of the fiber material, the large-dose addition and uniform dispersion of two-dimensional layered heat-conducting materials (graphene, hexagonal boron nitride and MXene) in polyamide master batches are realized on the premise of not obviously influencing the melt flow property of the functional master batches and the molecular chain structure of polyamide, and the dried polyamide master batches and polyamide chips are further melted and then spun through a special-shaped spinneret orifice plate to obtain the heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber with good mechanical property.
The invention is realized by the following technical scheme.
The heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber material comprises the following raw materials in percentage by mass:
80-95 parts of polyamide slices; 5-20 parts of heat-conducting polyamide master batch;
the heat-conducting polyamide master batch comprises 90-95 parts of polyamide slices; 5-10 parts of two-dimensional layered heat conduction material; 0.5-5 parts of a coupling agent.
With respect to the above technical solutions, the present invention has a further preferable solution:
preferably, the two-dimensional layered heat conduction material is one or more of graphene, hexagonal boron nitride or two-dimensional layered MXene carbide, and the two-dimensional layered MXene carbide is etched and stripped Ti3AlC2。
preferably, the coupling agent is one or more of gamma-aminopropyltriethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, gamma-mercaptopropyltriethoxysilane or N- (β -aminoethyl) -gamma-aminopropylmethyldimethoxysilane.
Furthermore, the invention provides a preparation method of the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber material, which comprises the following steps:
A. preparation of Heat-conducting Polyamide Master batch
(1) Dispersing 0.5-5 parts of coupling agent and 5-10 parts of two-dimensional layered heat conducting material in 500-1000 parts of formic acid solution by water bath ultrasound or mechanical shearing according to the mass ratio to obtain two-dimensional heat conducting material/formic acid dispersion liquid;
(2) dissolving 90-95 parts of polyamide chips in the two-dimensional heat conduction material/formic acid dispersion liquid according to the mass ratio, and dispersing in an ultrasonic or stirring manner to obtain a functional polyamide material mixed solution;
(3) uniformly pouring the dispersed mixed solution of the functional polyamide material into a pure water coagulation bath in a high-speed stirring state, flocculating to obtain wet functional polyamide master batches, and further drying by a vacuum drum drying oven to obtain heat-conducting polyamide master batches;
B. preparation of Polyamide fiber Material
According to the mass ratio, 80-95 parts of polyamide chips and 5-20 parts of heat-conducting polyamide master batches are blended and melted to prepare a melt, and the special-shaped fiber is obtained through controlling the structure of a flow passage of a spinning nozzle, so that the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber is further obtained.
Preferably, in the step A- (1) and the step A- (2), the system temperature is 50-60 ℃, and the dispersion time is 2-5 hours.
Preferably, in the step A- (3), the high-speed stirring speed is 5000-10000rpm, and the drying temperature of the vacuum drum oven is 60-80 ℃.
Preferably, the pure water coagulation bath is deionized water or distilled water.
Preferably, the structure of the flow channel of the spinneret is an anisotropic structure, and the anisotropic structure comprises a straight line shape, a three-leaf shape, a cross shape or a Y shape.
The polyamide fiber material with heat conduction and cool feeling, moisture absorption and sweat releasing performance prepared by the method can be applied to preparation of functional yarns, functional fabrics or functional clothes.
By adopting the technical scheme, the polyamide fiber has the advantages that high-content addition and uniform dispersion of the two-dimensional layered heat conduction material in the polyamide master batch are realized in one step by a solution mixing flocculation separation mode, the dried polyamide master batch and polyamide chips are further melted and mixed, and the polyamide fiber with heat conduction, coolness, moisture absorption and sweat releasing is obtained by spinning through a special-shaped spinneret orifice. The invention utilizes the high heat conduction characteristic of the two-dimensional layered material, combines the liquid phase dispersion of the two-dimensional material and the high-efficiency dissolution of polyamide, synchronously realizes the strong interaction between the heat conduction material and the polyamide material, further realizes the separation of the solvent and the polymer composite material in the system through the flocculation process, effectively solves the problems of high-dose addition and uniform dispersion of the heat conduction functional material in the composite fiber, and solves the cooling function of the fiber fabric from the aspect of improving the heat conduction coefficient of the composite fiber. The polyamide-based composite fiber prepared by the invention has excellent effects of heat conduction, cool feeling, moisture absorption and sweat releasing by using the existence of hydrophilic functional groups in the polyamide material and the construction of a microscopic special-shaped groove structure on the surface of the fiber in the spinning process, thereby improving the comfort of the clothing textile.
The breaking strength of the polyamide fiber prepared by the invention is higher than 3.3cN & dtex-1(ii) a The elongation at break is higher than 22%; the fabric thermal conductivity is not less than 0.4; the moisture permeability under the condition of 38 ℃ and 50% of ambient humidity is not less than 5000 g/d.m2。
Detailed Description
The present invention will be described in detail with reference to specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
The preparation method of the heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber material comprises the following steps:
A. dispersing 0.5-5 parts of coupling agent and 5-10 parts of two-dimensional layered heat conducting material in 500-1000 parts of formic acid solution according to the mass ratio by water bath ultrasound or mechanical shearing, wherein the system temperature is 50-60 ℃, and the dispersion time is 2-5 hours; further dissolving polyamide in the two-dimensional heat conduction material/formic acid dispersion liquid system to obtain a two-dimensional heat conduction material/formic acid dispersion liquid, wherein 90-95 parts by mass of polyamide slices are dissolved in the two-dimensional heat conduction material/formic acid dispersion liquid, and forming molecular-level dispersion between functional powder and polyamide molecular chains in an ultrasonic or stirring mode, wherein the system temperature is 50-60 ℃, and the dispersion time is 2-5 hours, so that a functional polyamide material mixed solution is obtained; uniformly pouring the dispersed mixed solution of the functional polyamide material into a pure water coagulation bath with a high-speed stirring speed of 5000-1000rpm, wherein the pure water coagulation bath adopts deionized water or distilled water, flocculating to obtain wet functional polyamide master batches, further drying the wet functional polyamide master batches by a vacuum drum oven at the drying temperature of 60-80 ℃, and drying the flocculated master batches to obtain the heat-conducting polyamide master batches;
B. on the basis of obtaining the heat-conducting polyamide master batch, further mixing and melting 80-95 parts of polyamide slices and 5-20 parts of solution according to the mass ratio to obtain the heat-conducting polyamide master batch, controlling the obtained melt through a special-shaped spinneret flow passage structure to realize the preparation of the special-shaped section fiber, and finally obtaining the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber.
The two-dimensional layered heat conduction material is one or more of graphene, hexagonal boron nitride or two-dimensional layered MXene carbide obtained by liquid phase stripping, and the two-dimensional layered MXene carbide is etched and stripped Ti3AlC2。
the coupling agent is one or more of gamma-aminopropyltriethoxysilane (KH550), gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane (KH560), gamma- (methacryloyloxy) propyltrimethoxysilane (KH570), gamma-mercaptopropyltriethoxysilane (KH580) or N- (β -aminoethyl) -gamma-aminopropylmethyldimethoxysilane (KH 602).
The flow channel structure of the spinning nozzle is of an opposite structure and specifically comprises any one of a straight line shape, a three-leaf shape, a cross shape and a Y shape.
Specific examples are given below to further illustrate the preparation process of the present invention.
Example 1
A. 0.5 part of coupling agent K according to the mass ratioH550, 5 portions of two-dimensional layered heat conduction material MXene (etching and stripping Ti)3AlC2) Dispersing in 500 parts of formic acid solution by water bath ultrasonic or mechanical shearing, wherein the system temperature is 50 ℃, and the dispersion time is 2 hours; further dissolving polyamide in the two-dimensional heat conduction material/formic acid dispersion liquid system to obtain a two-dimensional heat conduction material/formic acid dispersion liquid, dissolving polyamide slices in the two-dimensional heat conduction material/formic acid dispersion liquid according to the mass ratio of 95 parts, and forming molecular-level dispersion between functional powder and polyamide molecular chains in an ultrasonic or stirring mode, wherein the system temperature is 50 ℃, and the dispersion time is 2 hours to obtain a functional polyamide material mixed solution; uniformly pouring the dispersed functional polyamide material mixed solution into a deionized water coagulation bath with a high-speed stirring speed of 5000rpm, flocculating to obtain wet functional polyamide master batches, further drying the wet functional polyamide master batches by a vacuum drum oven at the drying temperature of 60 ℃, and drying the flocculated master batches to obtain heat-conducting polyamide master batches;
B. on the basis of obtaining the heat-conducting polyamide master batch, 80 parts of polyamide slices and 20 parts of solution are further mixed, flocculated and separated to obtain the heat-conducting polyamide master batch according to the mass ratio, the heat-conducting polyamide master batch is blended and melted, the obtained melt is spun through a linear nozzle structure to realize the preparation of the special-shaped section fiber, and finally the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber is obtained.
Example 2
A. Dispersing 1 part of coupling agent KH560 and 5-10 parts of two-dimensional layered heat-conducting material hexagonal boron nitride in 800 parts of formic acid solution by water bath ultrasound or mechanical shearing according to the mass ratio, wherein the system temperature is 55 ℃, and the dispersion time is 3 hours; further dissolving polyamide in the two-dimensional heat conduction material/formic acid dispersion liquid system to obtain a two-dimensional heat conduction material/formic acid dispersion liquid, dissolving polyamide slices in the two-dimensional heat conduction material/formic acid dispersion liquid according to the mass ratio of 93 parts, and forming molecular-level dispersion between functional powder and polyamide molecular chains in an ultrasonic or stirring mode, wherein the system temperature is 55 ℃, and the dispersion time is 3 hours to obtain a functional polyamide material mixed solution; uniformly pouring the dispersed mixed solution of the functional polyamide material into a deionized water coagulation bath with a high-speed stirring speed of 9000rpm, flocculating to obtain wet functional polyamide master batches, further drying the wet functional polyamide master batches by a vacuum drum drying oven at a drying temperature of 80 ℃, and drying the flocculated master batches to obtain heat-conducting polyamide master batches;
B. on the basis of obtaining the heat-conducting polyamide master batch, 85 parts of polyamide slices and 15 parts of solution are further mixed, flocculated and separated according to the mass ratio to obtain the heat-conducting polyamide master batch, the heat-conducting polyamide master batch is blended and melted, the obtained melt is spun through a trilobal nozzle structure to realize the preparation of the special-shaped section fiber, and finally the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber is obtained.
Example 3
A. Dispersing 3 parts of coupling agent KH570 and 10 parts of two-dimensional layered heat conduction material graphene in 1000 parts of formic acid solution according to the mass ratio by water bath ultrasound or mechanical shearing, wherein the system temperature is 60 ℃, and the dispersion time is 4 hours; further dissolving polyamide in the two-dimensional heat conduction material/formic acid dispersion liquid system to obtain a two-dimensional heat conduction material/formic acid dispersion liquid, dissolving polyamide slices in the two-dimensional heat conduction material/formic acid dispersion liquid according to the mass ratio of 90 parts, and forming molecular-level dispersion between functional powder and polyamide molecular chains in an ultrasonic or stirring mode, wherein the system temperature is 60 ℃, and the dispersion time is 4 hours to obtain a functional polyamide material mixed solution; uniformly pouring the dispersed functional polyamide material mixed solution into distilled water coagulation bath with a high-speed stirring speed of 9000rpm, flocculating to obtain wet functional polyamide master batches, further drying the wet functional polyamide master batches by a vacuum drum drying oven at the drying temperature of 70 ℃, and drying the flocculated master batches to obtain heat-conducting polyamide master batches;
B. on the basis of obtaining the heat-conducting polyamide master batch, 90 parts of polyamide slices and 10 parts of solution are further mixed, flocculated and separated to obtain the heat-conducting polyamide master batch according to the mass ratio, the heat-conducting polyamide master batch is blended and melted, the obtained melt is spun through a cross-shaped nozzle structure to realize the preparation of the special-shaped section fiber, and finally the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber is obtained.
Example 4
A. Dispersing 2 parts of coupling agent KH580, 3 parts of coupling agent KH570 and 10 parts of two-dimensional layered heat conduction material graphene in 800 parts of formic acid solution according to the mass ratio by water bath ultrasound or mechanical shearing, wherein the system temperature is 60 ℃, and the dispersion time is 5 hours; further dissolving polyamide in the two-dimensional heat conduction material/formic acid dispersion liquid system to obtain a two-dimensional heat conduction material/formic acid dispersion liquid, dissolving polyamide slices in the two-dimensional heat conduction material/formic acid dispersion liquid according to the mass ratio of 90 parts, and forming molecular-level dispersion between functional powder and polyamide molecular chains in an ultrasonic or stirring mode, wherein the system temperature is 60 ℃, and the dispersion time is 5 hours to obtain a functional polyamide material mixed solution; uniformly pouring the dispersed functional polyamide material mixed solution into a deionized water coagulation bath with a high-speed stirring speed of 8000rpm, flocculating to obtain wet functional polyamide master batches, further drying the wet functional polyamide master batches by a vacuum drum drying oven at a drying temperature of 70 ℃, and drying the flocculated master batches to obtain heat-conducting polyamide master batches;
B. on the basis of obtaining the heat-conducting polyamide master batch, 95 parts of polyamide slices and 5 parts of solution are further mixed, flocculated and separated to obtain the heat-conducting polyamide master batch according to the mass ratio, the heat-conducting polyamide master batch is blended and melted, the obtained melt is spun through a Y-shaped nozzle structure to realize the preparation of the special-shaped section fiber, and finally the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber is obtained.
Example 5
A. Dispersing 1.5 parts of coupling agent KH602, 3 parts of hexagonal boron nitride of two-dimensional layered heat conduction material and 3 parts of graphene of two-dimensional layered heat conduction material in 1000 parts of formic acid solution according to the mass ratio by water bath ultrasound or mechanical shearing, wherein the system temperature is 55 ℃, and the dispersion time is 3 hours; further dissolving polyamide in the two-dimensional heat conduction material/formic acid dispersion liquid system to obtain a two-dimensional heat conduction material/formic acid dispersion liquid, dissolving polyamide slices in the two-dimensional heat conduction material/formic acid dispersion liquid according to the mass ratio of 94 parts, and forming molecular-level dispersion between functional powder and polyamide molecular chains in an ultrasonic or stirring mode, wherein the system temperature is 55 ℃, and the dispersion time is 3 hours to obtain a functional polyamide material mixed solution; uniformly pouring the dispersed functional polyamide material mixed solution into a distilled water coagulation bath with a high-speed stirring speed of 6000rpm, flocculating to obtain wet functional polyamide master batches, further drying the wet functional polyamide master batches by a vacuum drum drying oven at a drying temperature of 80 ℃, and drying the flocculated master batches to obtain heat-conducting polyamide master batches;
B. on the basis of obtaining the heat-conducting polyamide master batch, 85 parts of polyamide slices and 15 parts of solution are further mixed, flocculated and separated to obtain the heat-conducting polyamide master batch according to the mass ratio, the heat-conducting polyamide master batch is blended and melted, the obtained melt is spun through a cross-shaped nozzle structure to realize the preparation of the special-shaped section fiber, and finally the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber is obtained.
The following is a comparison of comparative examples with examples of the present invention to further illustrate the effects of the present invention.
The mica powder filled melt spinning polyamide composite heat-conducting fiber is matched with a formula in a mass ratio, and is shown in a table 1:
TABLE 1 comparative example formulation
The specific preparation process of the comparative example: mixing mica powder and a silane coupling agent for 15 minutes by a powder high-speed mixer, further adding the mica powder modified by the silane coupling agent and polyamide chips into a double-screw extruder for melting and mixing, mixing 80-95 parts of polyamide chips with 5-20 parts of solution, flocculating and separating to obtain heat-conducting polyamide master batches, blending and melting, spinning the obtained melt by a circular nozzle structure to realize the preparation of fibers, and finally obtaining the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fibers;
the results of the performance tests of the examples and comparative examples are shown in Table 2.
TABLE 2 comparison of the properties of the examples with those of the comparative examples
As can be seen from Table 2, the breaking strength of the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber prepared by the invention is higher than 3.3cN dtex-1The elongation at break is higher than 22 percent, the thermal conductivity coefficient of the fabric is not less than 0.4, and the moisture permeability under the conditions of 38 ℃ and 50 percent of ambient humidity is not less than 5000 g/d.m2. As can be seen from Table 3, the heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber prepared by the invention not only has good mechanical properties such as breaking strength and breaking elongation, but also has higher heat conductivity and moisture permeability, and is a polyamide fiber material which can well realize heat-conducting cool-feeling, moisture-absorbing and sweat-releasing effects. The material can be used as functional yarn, functional fabric or material in functional clothing.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (10)
1. A heat-conducting cool-feeling, moisture-absorbing and sweat-releasing polyamide fiber material is characterized by comprising the following raw materials in percentage by mass:
80-95 parts of polyamide slices; 5-20 parts of heat-conducting polyamide master batch;
the heat-conducting polyamide master batch comprises 90-95 parts of polyamide slices; 5-10 parts of two-dimensional layered heat conduction material; 0.5-5 parts of a coupling agent.
2. The polyamide fiber material with heat conduction, cool feeling, moisture absorption and sweat releasing functions as claimed in claim 1, wherein the two-dimensional layered heat conduction material is one or more of graphene, hexagonal boron nitride and two-dimensional layered MXene carbide, and the two-dimensional layered MXene carbide is etched and stripped Ti3AlC2。
3. the heat-conducting cool feeling, moisture-absorbing and sweat-releasing polyamide fiber material according to claim 1, wherein the coupling agent is one or more of gamma-aminopropyltriethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, gamma-mercaptopropyltriethoxysilane or N- (β -aminoethyl) -gamma-aminopropylmethyldimethoxysilane.
4. A method for preparing a heat-conducting cool, moisture-absorbing and perspiring polyamide fiber material according to any one of claims 1 to 3, characterized by comprising the following steps:
A. preparation of Heat-conducting Polyamide Master batch
(1) Dispersing 0.5-5 parts of coupling agent and 5-10 parts of two-dimensional layered heat conducting material in 500-1000 parts of formic acid solution by water bath ultrasound or mechanical shearing according to the mass ratio to obtain two-dimensional heat conducting material/formic acid dispersion liquid;
(2) dissolving 90-95 parts of polyamide chips in the two-dimensional heat conduction material/formic acid dispersion liquid according to the mass ratio, and dispersing in an ultrasonic or stirring manner to obtain a functional polyamide material mixed solution;
(3) uniformly pouring the dispersed mixed solution of the functional polyamide material into a pure water coagulation bath in a high-speed stirring state, flocculating to obtain wet functional polyamide master batches, and further drying by a vacuum drum drying oven to obtain heat-conducting polyamide master batches;
B. preparation of Polyamide fiber Material
According to the mass ratio, 80-95 parts of polyamide chips and 5-20 parts of heat-conducting polyamide master batches are blended and melted to prepare a melt, and the special-shaped fiber is obtained through controlling the structure of a flow passage of a spinning nozzle, so that the heat-conducting cool, moisture-absorbing and sweat-releasing polyamide fiber is further obtained.
5. The method for preparing the heat-conducting cool feeling, moisture-absorbing and sweat-releasing polyamide fiber material according to claim 4, wherein in the steps A- (1) and A- (2), the temperature of the system is 50-60 ℃, and the dispersion is carried out for 2-5 hours.
6. The method for preparing heat-conducting cool feeling, moisture-absorbing and sweat-releasing polyamide fiber material according to claim 4, wherein in the step A- (3), the high-speed stirring speed is 5000-10000rpm, and the drying temperature of the vacuum drum oven is 60-80 ℃.
7. The method for preparing a heat-conducting cool feeling, moisture-absorbing and sweat-releasing polyamide fiber material according to claim 4, wherein the pure water coagulation bath is deionized water or distilled water.
8. The method for preparing the heat-conducting cool feeling, moisture-absorbing and sweat-releasing polyamide fiber material according to claim 4, wherein the structure of the flow channel of the spinneret is a special-shaped structure, and the special-shaped structure comprises a straight line shape, a three-leaf shape, a cross shape or a Y shape.
9. The method for preparing heat-conducting cool feeling, moisture-absorbing and sweat-releasing polyamide fiber material according to claim 4, wherein the breaking strength of the prepared heat-conducting cool feeling, moisture-absorbing and sweat-releasing polyamide fiber is higher than 3.3 cN-dtex-1(ii) a The elongation at break is higher than 22%; the fabric thermal conductivity is not less than 0.4; the moisture permeability under the condition of 38 ℃ and 50% of ambient humidity is not less than 5000 g/d.m2。
10. The use of the heat conducting cool, moisture absorbing and releasing polyamide fiber material prepared by the method of claim 4 in the preparation of functional yarn, functional fabric or functional clothing.
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