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Moisture-absorbing fiber and preparation method thereof

A manufacturing method and technology of hygroscopicity, which are applied in the manufacture of rayon, chemical characteristics of fibers, textiles and papermaking, etc., can solve the problems of high cost, complicated process, difficult control of polymerization process, etc., and achieve good hygroscopicity, excellent comfort, The effect of good comfort

Inactive Publication Date: 2014-03-26
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of method adds comonomers during the polymerization process, which makes it difficult to control the polymerization process and has adverse effects on the performance of the polymer, and the cost is relatively high.
[0005] A kind of hygroscopic polyester fiber described in Chinese patent CN200680043599.0 has added sulfonate groups to make the fibers hygroscopic, but the hygroscopicity of sulfonate groups is limited, and the hygroscopicity of the fibers cannot get a good boost
[0006] A water-absorbable antibacterial fiber described in Chinese patent CN201010522466.X is obtained by spinning a modified polyglutamic acid segment polymer. Although the fiber has good hygroscopicity, the process is complicated and cannot be effectively produced in large quantities. Production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The polyethylene terephthalate chips are dried to a moisture content of less than 100 ppm, and the addition amount of sodium pyrrolidone carboxylate is 1.0 wt% and fed into the inlet of the screw extruder. , the discharge volume is controlled by the metering pump, the primary fiber is spun out through the spinning assembly whose temperature is controlled by the spinning box under the condition of 290 ℃, cooled and solidified under the condition of the side blowing wind speed of 20m / min, and then passed through the oil nozzle. The fibers are evenly oiled to bundle the fibers and reduce friction, with an oiling rate of 0.9%. The fibers that have been oiled and bundled pass through the spinning shaft, enter the first roller (1GR) with a speed of 1500m / min, and then pass through the second roller (2GR) with a speed of 1500m / min and then enter the coiler for coiling. Unoriented fiber (UY), the coiling speed of the coiler is 1490m / min.

[0057] The obtained UY fiber is proce...

Embodiment 2

[0060] The polyethylene terephthalate chips were dried to a moisture content of less than 100 ppm, and the addition amount of sodium pyrrolidone carboxylate was 10 wt% and fed into the inlet of the screw extruder. Under the same conditions, polyester fibers with an elongation of 40.5%, a strength of 2.84 dtex / cN and a moisture absorption difference of 8.0% were obtained. In this example, the particle size of sodium pyrrolidone carboxylate in the fiber is 0.2-3 microns, the content is 10 wt%, and the structural formula is the same as that of Example 1.

Embodiment 3

[0062] The polyethylene terephthalate chips were dried to a moisture content of less than 100 ppm, and the sodium pyrrolidone carboxylate was added in an amount of 20 wt% and fed into the inlet of the screw extruder. Under the same conditions, polyester fibers with an elongation of 40.3%, a strength of 2.63 dtex / cN and a moisture absorption difference of 10.0% were obtained. In this embodiment, the particle size of sodium pyrrolidone carboxylate in the fiber is 0.2-3 microns, the content is 20 wt%, and the structural formula is the same as that of embodiment 1.

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Abstract

The invention discloses a moisture-absorbing fiber. The fiber at least contains a thermoplastic polymer and pyrrolidone carboxylic acid-Na particles, wherein the content of the pyrrolidone carboxylic acid-Na in the fiber is 1-20%, and the fiber also contains functional inorganic particles. While the thermoplastic polymer is fed into a screw machine, the pyrrolidone carboxylic acid-Na and a master batch containing the inorganic particles are fed into a screw inlet respectively, then spinning is performed to obtain the moisture-absorbing fiber; and the moisture absorption rate of the fiber can reach 4-10%, and the fabric woven by the fibers has good comfort.

Description

technical field [0001] The present invention relates to a hygroscopic fiber and its manufacturing method. Background technique [0002] Both polyester fiber and polyamide fiber are popular textile materials. As representatives of synthetic fibers, they not only have high strength, high modulus, good elasticity and light resistance, but also have good dimensional stability and long-lasting pleats after ironing. , but its hygroscopic performance is very insufficient compared to natural fibers. However, in the field of clothing, there is a great demand for highly hygroscopic materials with the ability to absorb moisture. The commonly used highly hygroscopic materials well known in this field can be mainly divided into two categories, one of which is mainly carbohydrates, such as starch, chitosan, sodium alginate and carboxymethyl cellulose and other polysaccharides. The materials are natural materials with good biodegradability, but the fibers of this type of natural material...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F6/90D01F1/10
Inventor 黄儒藤森稔
Owner TORAY FIBER RES INST(CHINA) CO LTD
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