CN112376142A - Moisture-absorbing heating yarn and preparation method and application thereof - Google Patents
Moisture-absorbing heating yarn and preparation method and application thereof Download PDFInfo
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- CN112376142A CN112376142A CN202011202562.6A CN202011202562A CN112376142A CN 112376142 A CN112376142 A CN 112376142A CN 202011202562 A CN202011202562 A CN 202011202562A CN 112376142 A CN112376142 A CN 112376142A
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- moisture
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Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- 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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
-
- 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
- D01D5/06—Wet spinning methods
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2211/00—Protein-based fibres, e.g. animal fibres
- D10B2211/01—Natural animal fibres, e.g. keratin fibres
- D10B2211/02—Wool
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2211/00—Protein-based fibres, e.g. animal fibres
- D10B2211/01—Natural animal fibres, e.g. keratin fibres
- D10B2211/04—Silk
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
Abstract
The invention discloses a moisture-absorbing heating yarn and a preparation method and application thereof, and belongs to the technical field of textiles. The preparation method comprises the steps of hydrolyzing polyacrylonitrile in a strong alkali solvent, wherein the mass of the polyacrylonitrile is 5-10% of that of the strong alkali solvent, and the mass of an alkali metal compound is 6-15% of that of the strong alkali solvent; adding acid for neutralization, and then adding a cross-linking agent for cross-linking reaction, wherein the mass of the cross-linking agent to the mass of the polyacrylonitrile is 0.03-0.12%; and then carrying out wet spinning, and finally mixing and spinning the fibers obtained by the wet spinning with wool fibers, cotton fibers, viscose fibers or silk fibers to obtain the moisture-absorbing and heating yarn. The yarn has high moisture absorption, the official moisture regain can reach 35.8% at most, and the heating performance of the yarn is excellent, and the 30-min average heating value of the yarn under the conditions of 20 ℃ and 40-90% RH is 4-5 ℃. The yarn can absorb water vapor volatilized by a human body to adjust the temperature, so that the yarn has good application in moisture-absorbing and warm-keeping fabrics.
Description
Technical Field
The invention belongs to the technical field of spinning, and particularly relates to a moisture-absorbing heating yarn and a preparation method and application thereof.
Background
Along with the improvement of the living standard of people, the functions of the clothes are diversified, so that the clothes are not only limited to simple shielding and warm keeping, but also have higher and higher requirements on the comfort, the environmental protection and the like of the clothes. The warm-keeping and heating fabric is suitable for winter cold prevention and warm keeping and is beneficial to movement. The key point of the moisture-absorbing and heat-generating fabric is the preparation of the moisture-absorbing and heat-generating yarn. The moisture absorption yarn that generates heat belongs to neotype yarn that adjusts temperature, and its principle mainly is: (1) the polar groups with strong hydrophilicity on the yarn molecules are combined with the water vapor molecules with high kinetic energy in the air through hydrogen bonds, so that the water vapor molecules with high kinetic energy are adsorbed by the yarn molecules and are static, and the principle of energy conservation shows that an object is changed from dynamic state to static state, and the kinetic energy is necessarily converted into heat energy under the condition of no potential energy change, so that the yarn material has the moisture absorption and heating performance; (2) the yarn absorbs the water vapor in the air or the water vapor emitted by human body and converts the water vapor into liquid to generate heat by utilizing the energy change generated during the phase state change, namely the water vapor is converted into the liquid to release heat, so that the yarn has the functions of moisture absorption and heat generation.
At present, the yarn used in the common clothing fabric has the highest water absorption rate of wool, and the water absorption rate is 16%. Under the conditions of 20 ℃ and 40-90% of R.H.sample Size 20cm x 20cm, the 30min average temperature rise value is as follows from high to low in sequence: wool (6.0 ℃), cotton (4.2 ℃), TPEE (3.3 ℃), nylon (2.8 ℃). Because wool and viscose fibers have better water absorption compared with common yarns, the wool and viscose fibers are used for producing the fabric with the heating function by selecting raw materials with better water absorption such as wool, viscose and the like in the market, but the wool fabric is easy to pill and has higher maintenance requirement, and the viscose fiber fabric has poor elasticity, is easy to wrinkle, is not resistant to water washing, fluffy, alkali and acid.
Disclosure of Invention
The technical problem to be solved is as follows: aiming at the technical problems, the invention provides the moisture-absorbing and heating yarn and the preparation method and the application thereof.
The technical scheme is as follows: a preparation method of moisture-absorbing and heat-emitting yarn comprises the following steps:
(1) hydrolysis of polyacrylonitrile: adding polyacrylonitrile into a strong base solvent to carry out hydrolysis reaction, wherein the strong base solvent comprises an organic solvent, deionized water and an alkali metal compound, the mass of the polyacrylonitrile is 5-10% of that of the strong base solvent, the mass of the alkali metal compound is 6-15% of that of the strong base solvent, the temperature of the hydrolysis reaction is 80-100 ℃, and the time of the hydrolysis reaction is 3-5 hours;
(2) acid neutralization: adding acid into the polyacrylonitrile hydrolysate to adjust the pH value to 5.5-7.5;
(3) thermal crosslinking: adding a cross-linking agent into a product obtained after acid neutralization for cross-linking reaction, wherein the mass of the cross-linking agent is 0.03-0.12% of that of the polyacrylonitrile, the temperature of the cross-linking reaction is 120-140 ℃, and the time of the cross-linking reaction is 1-2 h;
(4) and (3) wet spinning: adding the crosslinked product into a spinning solvent, and then carrying out wet spinning, wherein the spinning speed of the wet spinning is 15-17 m/min, the drafting multiple is 2.4-3.8, the winding speed is 20-30 m/min, and the drying temperature is 130-150 ℃;
(5) and (3) mixed spinning: and mixing the fiber obtained by wet spinning with wool fiber, cotton fiber, viscose fiber or silk fiber, and sequentially performing the processes of opening and cleaning, cotton carding, combing, drawing, roving and spinning to obtain the moisture-absorbing and heating yarn.
Preferably, the mass ratio of the polyacrylonitrile to the alkali metal compound is 1: (0.55-3).
Preferably, the alkali metal compound is sodium hydroxide or potassium hydroxide, and the alkali metal compound accounts for 6-10% of the mass of the strong alkali solvent.
Preferably, the organic solvent is ethanol or acetone, and accounts for 5-10% of the mass of the strong alkali solvent.
Preferably, the crosslinking agent is triallyl cyanurate or polyethyleneimine.
Preferably, the spinning solvent is an aqueous solution of zinc chloride or sodium thiocyanate.
Preferably, the concentration of the zinc chloride aqueous solution is 20 wt.% to 30 wt.%, and the concentration of the sodium cyanate aqueous solution is 20 wt.% to 30 wt.%.
The moisture-absorbing heating yarn prepared by the preparation method.
Preferably, the official moisture regain of the yarn is 15-28%, and the 30-min average temperature rise value of the yarn under the conditions of 20 ℃ and 40-90% RH is 4-5 ℃.
The moisture-absorbing and heat-generating yarn is applied to the moisture-absorbing and heat-insulating fabric.
Has the advantages that: the yarn has high hygroscopicity, the official moisture regain can reach 35.8% at most, and the heating performance of the yarn is excellent, and the 30-min average temperature rise value of the yarn under the conditions of 20 ℃ and 40% -90% RH is 4-5 ℃. The yarn can absorb water vapor volatilized by a human body to adjust the temperature, so that the yarn has good application in moisture-absorbing and warm-keeping fabrics.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
Adding 5g of polyacrylonitrile into 100g of strong base solvent for hydrolysis reaction, wherein the strong base solvent is prepared from 10mL of ethanol, 10g of sodium hydroxide and deionized water, and reacting for 3h at 100 ℃; adding nitric acid into the hydrolysate to adjust the pH to 5.5; and adding a crosslinking agent triallyl cyanurate for crosslinking reaction at 125 ℃ for 2 hours, wherein the mass of the crosslinking agent to the mass of the polyacrylonitrile is 0.03%. Adding the crosslinked product into a zinc chloride aqueous solution with the concentration of 20 wt.% and then carrying out wet spinning, wherein the spinning speed of the wet spinning is 15m/min, the drafting multiple is 3.8, the winding speed is 25m/min, and the drying temperature is 130 ℃; and finally, blending the fibers obtained by wet spinning and wool fibers according to a blending ratio of 20: 80, and obtaining the moisture-absorbing and heat-generating yarn through the processes of opening and cleaning, cotton carding, combing, drawing, roving and spinning in sequence.
Example 2
Adding 5g of polyacrylonitrile into 100g of strong base solvent for hydrolysis reaction, wherein the strong base solvent is prepared from 12mL of ethanol, 15g of sodium hydroxide and deionized water, and reacting for 4 hours at 85 ℃; adding nitric acid into the hydrolysate to adjust the pH to 6.5; and adding a crosslinking agent triallyl cyanurate for crosslinking reaction at 120 ℃ for 1.5h, wherein the mass of the crosslinking agent to the mass of the polyacrylonitrile is 0.08%. Adding the crosslinked product into 25 wt.% sodium thiocyanate aqueous solution, and performing wet spinning at spinning speed of 15m/min, drawing multiple of 3.5, winding speed of 20m/min, and drying temperature of 140 ℃; and finally, blending the fibers obtained by wet spinning and wool fibers according to a blending ratio of 20: 80, and obtaining the moisture-absorbing and heat-generating yarn through the processes of opening and cleaning, cotton carding, combing, drawing, roving and spinning in sequence.
Example 3
Adding 5g of polyacrylonitrile into 100g of strong base solvent for hydrolysis reaction, wherein the strong base solvent is prepared from 15mL of ethanol, 2.8g of sodium hydroxide and deionized water, and reacting for 5 hours at 80 ℃; adding nitric acid into the hydrolysate to adjust the pH to 7.0; and adding crosslinking agent polyethyleneimine to perform crosslinking reaction for 1h at 140 ℃, wherein the mass of the crosslinking agent to the mass of the polyacrylonitrile is 0.10%. Adding the crosslinked product into 30 wt.% sodium thiocyanate aqueous solution, and performing wet spinning at spinning speed of 17m/min, drafting multiple of 2.5, winding speed of 30m/min and drying temperature of 150 ℃; and finally, blending the fiber obtained by wet spinning with cotton fiber according to a blending ratio of 25: 75, mixing, and sequentially performing opening cleaning, cotton carding, combing, drawing, roving and spinning to obtain the moisture-absorbing and heat-generating yarn.
Example 4
Adding 8g of polyacrylonitrile into 100g of strong base solvent for hydrolysis reaction, wherein the strong base solvent is prepared from 15mL of ethanol, 10g of sodium hydroxide and deionized water, and reacting for 3.5h at 90 ℃; adding nitric acid into the hydrolysate to adjust the pH to 7.5; and adding crosslinking agent polyethyleneimine to perform crosslinking reaction for 1.5h at 135 ℃, wherein the mass of the crosslinking agent to the mass of the polyacrylonitrile is 0.12%. Adding the crosslinked product into 28 wt.% sodium thiocyanate aqueous solution, and performing wet spinning at spinning speed of 16m/min, drawing multiple of 2.8, winding speed of 30m/min and drying temperature of 140 ℃; and finally, blending the fiber obtained by wet spinning with cotton fiber according to a blending ratio of 25: 75, mixing, and sequentially performing opening cleaning, cotton carding, combing, drawing, roving and spinning to obtain the moisture-absorbing and heat-generating yarn.
Example 5
Adding 10g of polyacrylonitrile into 100g of strong base solvent for hydrolysis reaction, wherein the strong base solvent is prepared from 12mL of ethanol, 15g of sodium hydroxide and deionized water, and reacting for 5 hours at 85 ℃; adding nitric acid into the hydrolysate to adjust the pH to 6.5; and adding a crosslinking agent triallyl cyanurate for crosslinking reaction at 120 ℃ for 2 hours, wherein the mass of the crosslinking agent to the mass of the polyacrylonitrile is 0.09%. Adding the crosslinked product into 25 wt.% sodium thiocyanate aqueous solution, and performing wet spinning at spinning speed of 15m/min, drawing multiple of 3.8, winding speed of 20m/min and drying temperature of 140 ℃; and finally, blending the fiber obtained by wet spinning and the viscose fiber according to a blending ratio of 20: 80, and obtaining the moisture-absorbing and heat-generating yarn through the processes of opening and cleaning, cotton carding, combing, drawing, roving and spinning in sequence.
Example 6
Adding 8g of polyacrylonitrile into 100g of strong base solvent for hydrolysis reaction, wherein the strong base solvent is prepared from 10mL of ethanol, 8g of sodium hydroxide and deionized water, and reacting for 3h at 85 ℃; adding nitric acid into the hydrolysate to adjust the pH to 5.8; and then adding crosslinking agent polyethyleneimine to perform crosslinking reaction for 1.5h at 135 ℃, wherein the mass of the crosslinking agent to the mass of the polyacrylonitrile is 0.06%. Adding the crosslinked product into a zinc chloride aqueous solution with the concentration of 20 wt.% and then carrying out wet spinning, wherein the spinning speed of the wet spinning is 15m/min, the drafting multiple is 3.2, the winding speed is 25m/min, and the drying temperature is 130 ℃; and finally, blending the fiber obtained by wet spinning and the viscose fiber according to a blending ratio of 20: 80, and obtaining the moisture-absorbing and heat-generating yarn through the processes of opening and cleaning, cotton carding, combing, drawing, roving and spinning in sequence.
Example 7
Adding 8g of polyacrylonitrile into 100g of strong base solvent for hydrolysis reaction, wherein the strong base solvent is prepared from 12mL of ethanol, 8g of sodium hydroxide and deionized water, and reacting for 3h at 85 ℃; adding nitric acid into the hydrolysate to adjust the pH to 6.0; and adding a crosslinking agent triallyl cyanurate for crosslinking reaction at 120 ℃ for 1h, wherein the mass of the crosslinking agent to the mass of the polyacrylonitrile is 0.05%. Adding the crosslinked product into a sodium thiocyanate aqueous solution with the concentration of 20 wt.% and then carrying out wet spinning, wherein the spinning speed of the wet spinning is 16m/min, the drafting multiple is 2.4, the winding speed is 20m/min, and the drying temperature is 140 ℃; and finally, blending the fiber obtained by wet spinning and the silk fiber according to a blending ratio of 20: 80, and obtaining the moisture-absorbing and heat-generating yarn through the processes of opening and cleaning, cotton carding, combing, drawing, roving and spinning in sequence.
Example 8
Adding 10g of polyacrylonitrile into 100g of strong base solvent for hydrolysis reaction, wherein the strong base solvent is prepared from 15mL of ethanol, 15g of sodium hydroxide and deionized water, and reacting for 4 hours at 85 ℃; adding nitric acid into the hydrolysate to adjust the pH to 6.0; and then adding crosslinking agent polyethyleneimine to perform crosslinking reaction for 1.5h at 125 ℃, wherein the mass of the crosslinking agent to the mass of the polyacrylonitrile is 0.08%. Adding the crosslinked product into a sodium thiocyanate aqueous solution with the concentration of 20 wt.% and then carrying out wet spinning, wherein the spinning speed of the wet spinning is 16m/min, the drafting multiple is 3.5, the winding speed is 20m/min, and the drying temperature is 140 ℃; and finally, blending the fiber obtained by wet spinning and the silk fiber according to a blending ratio of 20: 80, and obtaining the moisture-absorbing and heat-generating yarn through the processes of opening and cleaning, cotton carding, combing, drawing, roving and spinning in sequence.
According to the GB/T9994-:
according to the FZ/T73036-:
the above table shows that the moisture absorption and heat generation yarn has good application in moisture absorption and heat preservation fabrics, and can be widely applied to knitted underwear and various home textiles.
Claims (10)
1. The preparation method of the moisture-absorbing and heat-emitting yarn is characterized by comprising the following steps:
(1) hydrolysis of polyacrylonitrile: adding polyacrylonitrile into a strong base solvent for hydrolysis reaction, wherein the strong base solvent comprises an organic solvent, deionized water and an alkali metal compound, the mass of the polyacrylonitrile is 5-10% of that of the strong base solvent, the mass of the alkali metal compound is 6-15% of that of the strong base solvent, the temperature of the hydrolysis reaction is 80-100 ℃, and the time of the hydrolysis reaction is 3-5 hours;
(2) acid neutralization: adding acid into the polyacrylonitrile hydrolysate to adjust the pH value to 5.5-7.5;
(3) thermal crosslinking: adding a cross-linking agent into a product obtained after acid neutralization for cross-linking reaction, wherein the mass of the cross-linking agent is 0.03-0.12% of that of the polyacrylonitrile, the temperature of the cross-linking reaction is 120-140 ℃, and the time of the cross-linking reaction is 1-2 h;
(4) and (3) wet spinning: adding the crosslinked product into a spinning solvent, and then carrying out wet spinning, wherein the spinning speed of the wet spinning is 15-17 m/min, the drafting multiple is 2.4-3.8, the winding speed is 20-30 m/min, and the drying temperature is 130-150 ℃;
(5) and (3) mixed spinning: and mixing the fiber obtained by wet spinning with wool fiber, cotton fiber, viscose fiber or silk fiber, and sequentially performing the processes of opening and cleaning, cotton carding, combing, drawing, roving and spinning to obtain the moisture-absorbing and heating yarn.
2. The method for preparing the moisture-absorbing and heat-emitting yarn as claimed in claim 1, wherein the mass ratio of polyacrylonitrile to the alkali metal compound is 1: (0.55-3).
3. The method for preparing the moisture-absorbing and heat-emitting yarn according to claim 1, wherein the alkali metal compound is sodium hydroxide or potassium hydroxide, and the alkali metal compound accounts for 6-10% by mass of the strong alkali solvent.
4. The method for preparing the moisture-absorbing and heat-emitting yarn according to claim 1, wherein the organic solvent is ethanol or acetone, and accounts for 5-10% by mass of the strong alkali solvent.
5. The method for preparing moisture-absorbing and heat-emitting yarn according to claim 1, wherein the cross-linking agent is triallyl cyanurate or polyethyleneimine.
6. The method for preparing moisture-absorbing and heat-emitting yarn according to claim 1, wherein the spinning solvent is zinc chloride aqueous solution or sodium thiocyanate aqueous solution.
7. The method for preparing the moisture-absorbing and heat-emitting yarn as claimed in claim 6, wherein the concentration of the zinc chloride aqueous solution is 20 wt.% to 30 wt.%, and the concentration of the sodium cyanate aqueous solution is 20 wt.% to 30 wt.%.
8. The hygroscopic heat-generating yarn obtained by the production method according to claim 1.
9. The moisture-absorbing and heat-emitting yarn as claimed in claim 8, wherein the official moisture regain of the yarn is 15-28%, and the 30-min average temperature rise value of the yarn at 20 ℃ and 40-90% RH is 4-5 ℃.
10. The use of the moisture-absorbing and heat-generating yarn of claim 8 in a moisture-absorbing and heat-insulating fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011202562.6A CN112376142A (en) | 2020-11-02 | 2020-11-02 | Moisture-absorbing heating yarn and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011202562.6A CN112376142A (en) | 2020-11-02 | 2020-11-02 | Moisture-absorbing heating yarn and preparation method and application thereof |
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| Publication Number | Publication Date |
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| CN112376142A true CN112376142A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011202562.6A Withdrawn CN112376142A (en) | 2020-11-02 | 2020-11-02 | Moisture-absorbing heating yarn and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355780A (en) * | 2021-06-10 | 2021-09-07 | 青岛新嘉程家纺有限公司 | Multifunctional heating yarn |
| WO2023239331A1 (en) * | 2022-06-06 | 2023-12-14 | Goekcil Veli | Production method of a high-strength textile material in which raw material stress is eliminated and this material |
-
2020
- 2020-11-02 CN CN202011202562.6A patent/CN112376142A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355780A (en) * | 2021-06-10 | 2021-09-07 | 青岛新嘉程家纺有限公司 | Multifunctional heating yarn |
| WO2023239331A1 (en) * | 2022-06-06 | 2023-12-14 | Goekcil Veli | Production method of a high-strength textile material in which raw material stress is eliminated and this material |
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