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Comfortable and soft polyester staple fiber and preparation method thereof

A polyester staple fiber and soft technology, applied in the field of textiles, can solve the problems such as the mechanical properties and moisture permeability of polyester staple fiber yarn need to be improved, and achieve the effects of not easy to decolorize, improve breaking strength, and improve water absorption.

Inactive Publication Date: 2022-05-20
闫明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyester staple fiber still has the problem of yarn mechanical properties and moisture permeability to be improved.

Method used

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  • Comfortable and soft polyester staple fiber and preparation method thereof
  • Comfortable and soft polyester staple fiber and preparation method thereof

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preparation example Construction

[0033] The preparation method of polyester staple fiber is: carry out esterification reaction with terephthalic acid and ethylene glycol, then add ethylene glycol oxalate, polycondensate under the catalysis of ethylene glycol oxalate to obtain copolyester, and then Then through the polyester staple fiber spinning process, the polyester staple fiber for vortex spinning is made, which specifically includes the following steps:

[0034] In the esterification step, put ethylene glycol into the polycondensation tank under normal pressure to cool down, add phthalic acid after 15-20 minutes, and carry out the esterification reaction at a temperature of 230°C-250°C and an absolute pressure of 0.1-0.3MPa. After 1-2h, the esterification product was obtained;

[0035]In the polycondensation step, the esterification product is used as the raw material, and then stabilizer, phosphoric acid ester, sodium benzenesulfonate isophthalate, and anti-oxidant are added, and under the catalytic acti...

Embodiment 1

[0046] A comfortable and soft polyester staple fiber, comprising the following components in parts by weight: 13 parts of terephthalic acid, 0.15 part of ethylene glycol, 0.2 part of ethylene glycol oxalate, 0.07 part of stabilizer, 0.45 part of phosphoric acid ester 0.24 parts, 0.24 parts of sodium benzenesulfonate isophthalate, and 0.04 parts of antioxidant.

[0047] The preparation method of polyester staple fiber is: carry out esterification reaction with terephthalic acid and ethylene glycol, then add ethylene glycol oxalate, polycondensate under the catalysis of ethylene glycol oxalate to obtain copolyester, and then Then through the polyester staple fiber spinning process, the polyester staple fiber for vortex spinning is made, which specifically includes the following steps:

[0048] In the esterification step, put ethylene glycol into the polycondensation tank under normal pressure to cool down, add phthalic acid after 16 minutes, and carry out the esterification reac...

Embodiment 2

[0060] A comfortable and soft polyester staple fiber, comprising the following components in parts by weight: 12 parts of terephthalic acid, 0.15 parts of ethylene glycol, 0.1 part of ethylene glycol oxalate, 0.09 parts of stabilizer, and 0.44 parts of phosphoric acid ester part, 0.2 part of sodium benzenesulfonate isophthalate, and 0.06 part of antioxidant.

[0061] The preparation method of polyester staple fiber is: carry out esterification reaction with terephthalic acid and ethylene glycol, then add ethylene glycol oxalate, polycondensate under the catalysis of ethylene glycol oxalate to obtain copolyester, and then Then through the polyester staple fiber spinning process, the polyester staple fiber for vortex spinning is made, which specifically includes the following steps:

[0062] In the esterification step, put ethylene glycol into the polycondensation tank under normal pressure to cool down, add phthalic acid after 17 minutes, and carry out the esterification reacti...

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Abstract

The invention discloses a comfortable and soft polyester staple fiber and a preparation method thereof, and belongs to the technical field of textiles. The comfortable and soft polyester staple fiber is prepared from the following components in parts by weight: 10 to 15 parts of terephthalic acid, 0.1 to 0.2 part of ethylene glycol, 0.1 to 0.3 part of ethylene glycol oxalate, 0.05 to 0.09 part of a stabilizer, 0.4 to 0.5 part of phosphate, 0.2 to 0.4 part of sodium benzene sulfonate isophthalate and 0.01 to 0.06 part of an antioxidant. According to the polyester staple fiber, sodium benzene sulfonate isophthalate, ethylene glycol oxalate and phosphate are added in the preparation process, the original structure of polyester is damaged due to the addition of sodium benzene sulfonate isophthalate, ethylene glycol oxalate and phosphate, a sulfonic acid group with negative charges is added into a molecular chain, and in the dyeing process, the polyester staple fiber is not prone to falling off. Ions on a sulfonic acid group in a polyester molecular chain are easily subjected to ion exchange with cations in the cationic dye, so that the dyeing rate is improved. The dye and the fibers are combined through ionic bonds, so that the dyeing is firmer, and decoloration is not easy to occur.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a comfortable and soft polyester staple fiber and a preparation method thereof. Background technique [0002] Polyester staple fiber is a fiber obtained by spinning polyester (that is, polyethylene terephthalate, PET for short, polymerized by PTA and MEG) into tow and cutting it. PET is in the shape of rice grains or flakes, with various varieties and colors (usually the main component of beverage bottles we come into contact with is polyester, which is sliced, and polyester can be produced by two main processes of pre-spinning and post-spinning. According to different requirements, it can be cut into polyester staple fibers of different specifications in post-spinning, generally 4D-22D, and can be divided into two-dimensional and three-dimensional according to its crimp). 75% is used for polyester for chemical fiber, according to the requirements of the textile ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92C08G63/688C08G63/87D01F1/10
CPCD01F6/92D01F1/10C08G63/6886C08G63/87Y02P70/62
Inventor 闫明刘德生刘华钧余艳
Owner 闫明