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Hygroscopic heating yarn and preparation method and application thereof

A technology of moisture absorption and heating, yarn, applied in wet spinning, spinning solution preparation, yarn, etc., can solve the problems of high maintenance requirements, non-alkali and acid resistance, easy to wrinkle, etc., and achieve good application and high hygroscopicity Effect

Inactive Publication Date: 2021-02-19
义乌市鼎莎针织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because wool and viscose fiber have better water absorption compared with commonly used yarns, the hygroscopic and heating products on the market often use raw materials with better hygroscopicity such as wool and viscose to make fabrics with heating function, but wool The fabric is easy to pill and requires high maintenance. The viscose fabric has poor elasticity and is easy to wrinkle. It is not resistant to washing, easy to fluff, not alkali and acid

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Hygroscopic heating yarn and preparation method and application thereof
  • Hygroscopic heating yarn and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023]5g of polyacrylonitrile was added to 100g of strong base solvent to carry out the hydrolysis reaction. The strong base solvent was made up of 10mL ethanol, 10g sodium hydroxide and deionized water, and reacted at 100°C for 3h; the hydrolysate was adjusted to pH 5.5; then add the crosslinking agent triallyl cyanurate to carry out the crosslinking reaction at 125°C for 2h, and the mass of the crosslinking agent is 0.03% of the mass of the polyacrylonitrile. The cross-linked product was added to a zinc chloride aqueous solution with a concentration of 20wt.% and then subjected to wet spinning. The spinning speed of the wet spinning was 15m / min, the draft ratio was 3.8, and the winding speed was 25m / min. , The drying temperature is 130 ℃; finally, the fiber obtained by wet spinning is mixed with wool fiber at a blending ratio of 20:80, and then through the processes of opening, carding, combing, drawing, roving and spinning to obtain moisture-absorbing heating yarn line.

Embodiment 2

[0025]Add 5g of polyacrylonitrile to 100g of a strong base solvent to carry out the hydrolysis reaction. The strong base solvent is made up of 12mL of ethanol, 15g of sodium hydroxide and deionized water, and reacted at 85°C for 4h; the hydrolysate is adjusted to The pH is 6.5; the crosslinking agent triallyl cyanurate is added to carry out the crosslinking reaction at 120° C. for 1.5 hours, and the mass of the crosslinking agent is 0.08% of the mass of the polyacrylonitrile. The crosslinked product was added to a 25wt.% aqueous sodium thiocyanate solution and then subjected to wet spinning. The spinning speed of the wet spinning was 15m / min, the draft ratio was 3.5, and the winding speed was 20m / min. min, the drying temperature is 140℃; finally, the fiber obtained by wet spinning is mixed with wool fiber at a blending ratio of 20:80, and then through the processes of opening, carding, combing, drawing, roving and spinning to obtain moisture and heat generation Yarn.

Embodiment 3

[0027]Add 5g of polyacrylonitrile to 100g of strong base solvent for hydrolysis reaction, the strong base solvent is made up of 15mL ethanol, 2.8g sodium hydroxide and deionized water, react at 80℃ for 5h; add nitric acid to the hydrolyzate to adjust To pH 7.0; then add the cross-linking agent polyethyleneimine to carry out the cross-linking reaction at 140° C. for 1 h, and the mass of the cross-linking agent is 0.10% to the mass of the polyacrylonitrile. The crosslinked product was added to a sodium thiocyanate aqueous solution with a concentration of 30wt.% and then subjected to wet spinning. The spinning speed of the wet spinning was 17m / min, the draft ratio was 2.5, and the winding speed was 30m / min. min, the drying temperature is 150℃; finally, the fiber obtained by wet spinning is mixed with cotton fiber at a blending ratio of 25:75, and then through the processes of opening, carding, combing, drawing, roving and spinning to obtain moisture and heat generation Yarn.

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Abstract

The invention discloses a hygroscopic heating yarn and a preparation method and application thereof, and belongs to the technical field of textile. The preparation method comprises the following stepsthat polyacrylonitrile is hydrolyzed in a strong alkali solvent, wherein polyacrylonitrile accounts for 5-10% of the mass of the strong alkali solvent, and an alkali metal compound accounts for 6%-15% of the mass of the strong alkali solvent; then acid is added for neutralization, a cross-linking agent is added for a cross-linking reaction, and the mass of the cross-linking agent accounts for 0.03%-0.12% of the mass of the polyacrylonitrile; then wet spinning is carried out, and finally fibers obtained through wet spinning are subjected to mix spinning with wool fibers, cotton fibers, viscosefibers or silk fibers to obtain the hygroscopic heating yarn. The hygroscopic heating yarn has very high hygroscopicity, the nominal moisture regain can reach 35.8% at most, and the heating performance of the yarn is excellent, and the 30-minute average temperature rise value under the conditions of 20 DEG C and 40%-90% RH is 4-5 DEG C. The yarn can absorb water vapor volatilized by human bodiesto adjust the temperature, so that the yarn has good application in hygroscopic and warm-keeping fabrics.

Description

Technical field[0001]The invention belongs to the technical field of textiles, and specifically relates to a moisture-absorbing and heating yarn and a preparation method and application thereof.Background technique[0002]With the improvement of people's living standards, the functions of clothing are also developing diversified, not only limited to simple shelter and warmth, but also people's requirements for comfort and environmental protection of clothing are getting higher and higher. For the purpose of keeping warm in winter and facilitating activities, warm and heat-generating fabrics came into being. The focus of moisture-absorbing and heating fabrics is the preparation of moisture-absorbing and heating yarns. Moisture-absorbing and heating yarn is a new type of temperature-regulating yarn. Its principles are as follows: (1) The strong hydrophilic polar groups on the yarn molecules and the water vapor molecules with high kinetic energy in the air are combined by hydrogen bonds ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/04D01D1/02D01D5/06
CPCD01D1/02D01D5/06D02G3/04D10B2201/02D10B2201/24D10B2211/02D10B2211/04D10B2321/10
Inventor 何军浩
Owner 义乌市鼎莎针织有限公司
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