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

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
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Example Embodiment

[0028] Example 1

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

[0030]

[0031] Of which CaSO in raw materials 3 The average diameter of PEG is 10μm, and the molecular weight of PEG is 4000.

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

Example Embodiment

[0036] Example 2

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

[0038]

[0039] Of which CaSO in raw materials 3 The average diameter of PEG is 40μm, and the molecular weight of PEG is 4000.

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

Example Embodiment

[0044] Example 3

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

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

[0047]

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

[0049] The POY-DTY spinning process is used in the spinning process, and the spinning process process parameters:

[0050] Spinning temperature 290℃

[0051] POY spinning speed 4000m / min

[0052] Side blowing temperature 28℃

[0053] Supply air relative humidity 80%

[0054] Wind speed 0.5m / s

[0055] DTY processing speed 800m / min

[0056] The prepared cotton-like polyester filament wit...

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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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