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Cotton imitation polyester filament with high hygroscopicity and preparation method thereof

A polyester filament, high moisture absorption technology, applied in the field of polyester modification, can solve the problems of complex modification process, low hydrophilicity of polyester, and high modification cost, achieve excellent anti-mildew and antibacterial properties, simple preparation process, fiber high quality effects

Active Publication Date: 2012-01-18
江苏微笑新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a Chinese patent for a highly water-absorbing and quick-drying polyester fabric and its preparation method (application number 200710173472.7), a method for imparting hydrophobicity to polyester fibers (application number 200810208040.X), a cotton-like polyester staple fiber and its preparation method (Application No. 201010137901.7), a cotton-like polyester staple fiber containing wool and its preparation method (Application No. 201010137905.5), a hydrophilic spinning oil agent for polyester staple fiber (Application No. 201010195882.3) through the method of physical modification to polyester However, the improvement of the hydrophilicity of polyester after modification is low, and the hydrophilicity cannot be maintained continuously, which is far from meeting the performance requirements of imitation cotton.
Chinese patent hygroscopic copolyester and its hygroscopic fiber (application number 96104374.1), polyester fiber high moisture absorption modification method and its high moisture absorption modified polyester fiber (application number 00119607.3), a functional ion Liquid modified polyester and its preparation method (application number 200810231727.5), modified polyester with good hydrophilicity and antistatic properties and its preparation method (application number 200810231728.X), an isophthalic acid modified polyparaphenylene Preparation method of dicarboxylic acid 1,2-propanol copolyester (application number 200910101792.0), a finishing method for improving the hydrophilic properties of polyester fabrics (application number 200910210900.8), and atmospheric pressure air medium plasma surface of polyester fabrics for inkjet printing The modification process (application number 201010575680.1) has introduced the use of chemical modification methods to modify the hydrophilicity of polyester fibers. At the same time, the modified fibers have improved in terms of hydrophilicity, antistatic performance, and wearing performance. Some improvements have been made, but the modification process is complicated and the modification cost is too high.
[0004] Using a single physical or chemical method to improve the hydrophilicity of polyester often has the defect of insufficient performance and poor effect

Method used

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  • Cotton imitation polyester filament with high hygroscopicity and preparation method thereof
  • Cotton imitation polyester filament with high hygroscopicity and preparation method thereof
  • Cotton imitation polyester filament with high hygroscopicity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Preparation of polyester chips: with CaSO 3 , NH(CH 2 CH 2 Oh) 2 , PEG, SIPE, PTA, and EG are raw materials that adopt the method of in-situ polymerization, and the molar material ratio of PTA to EG is 1: 1.25, and carry out in-situ polymerization according to the content of the following raw material components.

[0030]

[0031] Among them, CaSO in the raw material 3 The average diameter of PEG is 10 μm, and the molecular weight of PEG is 4000.

[0032] The in-situ polymerization reaction is divided into esterification and polycondensation process. The esterification reaction is under the protection of nitrogen and the pressure is 0.2MPa. The dibasic acid and dibasic alcohol undergo esterification reaction to form a prepolymer. The reaction temperature is 240°C. Reaction 2h. The polycondensation reaction is carried out pre-condensation at high temperature and normal pressure, the reaction temperature is 260°C, and kept for 1h; then the post-condensation is ...

Embodiment 2

[0037] 1. Preparation of polyester chips: with CaSO 3 , NH(CH 2 CH 2 Oh) 2 , PEG, SIPE, PTA, and EG are raw materials that adopt the method of in-situ polymerization, and the molar material ratio of PTA to EG is 1: 1.30, and the in-situ polymerization is carried out according to the content of the following raw material components.

[0038]

[0039] Among them, CaSO in the raw material 3 The average diameter of PEG is 40 μm, and the molecular weight of PEG is 4000.

[0040] The in-situ polymerization reaction is divided into esterification and polycondensation process. The esterification reaction is under the protection of nitrogen and the pressure is 0.4MPa. The dibasic acid and dibasic alcohol undergo esterification reaction to form a prepolymer. The reaction temperature is 260°C. Reaction 4h. The polycondensation reaction is pre-condensed at high temperature and normal pressure, the reaction temperature is 280°C, and kept for 2h; then the post-condensation is carrie...

Embodiment 3

[0045] The preparation of polyester chips is the same as embodiment 1, the preparation of polyester chips: with CaSO 3 , NH(CH 2 CH 2 Oh) 2 , PEG, SIPE, PTA, and EG are raw materials that adopt the method of in-situ polymerization, and the molar material ratio of PTA to EG is 1: 1.05, and the in-situ polymerization is carried out according to the content of the following raw material components.

[0046] The special-shaped spinneret is hollow, wherein the content of raw material components is:

[0047]

[0048] Wherein the average diameter of calcium sulfite in the raw material is 30 μm, and the molecular weight of PEG is 6000.

[0049] The spinning process adopts POY-DTY spinning process, and the process parameters of spinning process:

[0050] Spinning temperature 290°C

[0051]POY spinning speed 4000m / min

[0052] Side blowing temperature 28°C

[0053] Supply air relative humidity 80%

[0054] Wind speed 0.5m / s

[0055] DTY processing speed 800m / min

[0056] Th...

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Abstract

The invention provides a cotton imitation polyester filament with a high hygroscopicity and a preparation method thereof. The cotton imitation polyester filament contains 1-10wt% of CaSO3 and 90-99wt% of modified PET, wherein the modified PET contains -COH2CH2NHCH2CH2O- and -OCH2CH2OCOC6H4COOCH2O- in a ratio of 1:10-50. The invention also provides a preparation method of the cotton imitation polyester filament with high hygroscopicity. CaSO3, NH(CH2CH2OH)2, PEG, SIPE, PTA and EG are used as raw materials, wherein a molar ratio of PTA to EG is 1:0.95-1.35; an in situ polymerization method is used to prepare a polyester chip, which is treated with melt spinning through a shaped spinneret plate to obtain the polyester filament. The polyester filament prepared by the invention has high hygroscopicity, excellent anti-static electricity performance, mould proofness and antibacterial property, and not only overcomes defects of weak hydrophilcity and anti-static electricity performance of existing terylene but also solves a problem of uneven distribution of inorganic additive particles through the in situ polymerization, and can be applied to high-grade cotton imitation polyester filamentand fabrics thereof.

Description

technical field [0001] The invention relates to a cotton-like polyester filament with a high moisture absorption rate and a preparation method thereof. Specifically, the in-situ polymerization method is used to improve the hygroscopicity of the polyester filament by adding inorganic and organic functional units, and to improve the antistatic and mildew resistance of the fiber , Antibacterial properties. In particular, a hydrophilic cotton-like polyester filament with a moisture regain greater than 2.0% and pits on the fiber surface and a preparation method thereof belong to the field of polyester modification. Background technique [0002] Polyester is a polymer compound with a certain molecular weight obtained by condensation polymerization of terephthalic acid and ethylene glycol. Because polyester has excellent properties such as high strength, high modulus, good shape retention, and high dimensional stability, it is widely used Used in various fields such as clothing, d...

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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IPC IPC(8): D01F6/92D01F1/10D01F11/08D01D5/12D01D5/253C08G63/688C08G63/685
Inventor 谈辉郑耀伟王华平王朝生汪涛江振林
Owner 江苏微笑新材料科技有限公司
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