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Feather-like polyester fiber and preparation method thereof

A yarn polyester and feather technology is applied in the field of imitation feather yarn polyester fiber and its preparation, which can solve the problems of high equipment requirements, slow degradation rate, poor dyeing performance, etc., and achieve the effect of improving the interaction force

Active Publication Date: 2019-05-14
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of poor dyeing performance, high requirements on equipment, high dyeing cost and slow degradation rate in the prior art, and provide a dyeing product with excellent dyeing performance, low requirements on dyeing equipment, low dyeing cost and fast natural degradation rate. Feather-like polyester fiber and preparation method thereof

Method used

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  • Feather-like polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A preparation method of feather-like polyester fiber, the steps are as follows:

[0056] (1) prepare modified polyester;

[0057] (1.1) Esterification reaction;

[0058]Make a slurry of terephthalic acid, ethylene glycol, dimethylsilanediol and 2,2-difluoro-1,3-malonic acid, add antimony trioxide, titanium dioxide and triphenyl phosphate and mix well , carry out the esterification reaction under pressure in a nitrogen atmosphere, the pressurized pressure is 0.3 MPa, the temperature of the esterification reaction is 250 ° C, when the amount of water distilled in the esterification reaction reaches 90.1% of the theoretical value, it is the end of the esterification reaction , the molar ratio of terephthalic acid to ethylene glycol is 1:1.2, the sum of the added amount of dimethylsilanediol and 2,2-difluoro-1,3-malonic acid is the added amount of terephthalic acid 3.2mol%, the molar ratio of dimethylsilanediol to 2,2-difluoro-1,3-malonic acid is 3:1.5, and the addition a...

Embodiment 2

[0076] A preparation method of feather-like polyester fiber, the steps are as follows:

[0077] (1) prepare modified polyester;

[0078] (1.1) Esterification reaction;

[0079] Make a slurry of terephthalic acid, ethylene glycol, dimethylsilanediol and 2,2-difluoro-1,4-butanedioic acid, add antimony ethylene glycol, titanium dioxide and trimethyl phosphate and mix well , the esterification reaction is carried out under normal pressure in a nitrogen atmosphere, the temperature of the esterification reaction is 260 ° C, when the amount of water distilled in the esterification reaction reaches 95% of the theoretical value, it is the end of the esterification reaction, and terephthalic acid The molar ratio with ethylene glycol is 1:2.0, the sum of the added amount of dimethylsilanediol and 2,2-difluoro-1,4-butanedioic acid is 5.0mol% of the added amount of terephthalic acid, two The molar ratio of methylsilanediol to 2,2-difluoro-1,4-butanedioic acid is 3:2, and the addition amo...

Embodiment 3

[0090] A preparation method of feather-like polyester fiber, the steps are as follows:

[0091] (1) prepare modified polyester;

[0092] (1.1) Esterification reaction;

[0093]Make a slurry of terephthalic acid, ethylene glycol, dimethylsilanediol and 2,2-difluoro-1,5-pentanedioic acid, add antimony acetate, titanium dioxide and trimethyl phosphite and mix evenly, The esterification reaction is carried out under pressure in a nitrogen atmosphere, the pressurized pressure is 0.2 MPa, and the temperature of the esterification reaction is 255 ° C. When the amount of water distilled in the esterification reaction reaches 92% of the theoretical value, it is the end point of the esterification reaction. The molar ratio of terephthalic acid to ethylene glycol is 1:1.6, the sum of the added amount of dimethylsilanediol and 2,2-difluoro-1,5-pentanedioic acid is 3.4 of the added amount of terephthalic acid mol%, the molar ratio of dimethylsilanediol to 2,2-difluoro-1,5-pentanedioic ac...

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Abstract

The invention relates to a feather-like polyester fiber and a preparation method thereof. The preparation method comprises the steps: firstly, terephthalic acid, ethylene glycol, dihydric alcohol witha main chain containing silicon, and fluorinated diacid are evenly mixed, and then an esterification reaction and a polycondensation reaction are carried out successively to prepare modified polyester; and then a modified polyester POY filament is prepared from modified polyester flux through a flat four-linking-ring-shaped spinneret plate according to a POY process, then a modified polyester DTYfilament is prepared from the modified polyester POY filament according to a DTY process, and then the feather-like polyester fiber is obtained. Spinneret orifices of the flat four-linking-ring-shaped spinneret plate are in a flat four-linking-ring shape. According to a prepared product, when the temperature is 130 DEG C, the dye-uptake is 89.6-93.7%; when the temperature is 25 DEG C and the relative humidity is 65%, after the product is placed for 60 months, the intrinsic viscosity of the product is lowered by 13-20%; and the preparation method is simple in process and low in cost, and the prepared product is excellent in dyeing property and high in natural degradation speed, and has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of modified polyester fibers, and relates to feather-like polyester fibers and a preparation method thereof. Background technique [0002] Since polyester fiber has the characteristics of high strength, good elasticity, good heat resistance, good chemical resistance and good dimensional stability of the fabric, it has been an important supplement to natural fibers since its inception, and has increasingly become the most important fabric in the textile industry. Use silk. In recent years, with the continuous improvement of human living standards, people's requirements for the quantity and quality of fiber materials are also increasing in the application fields of clothing, decoration and industrial polyester products. In order to meet the needs of people in the fields of clothing and decoration, it is necessary to develop differentiated fibers with new properties or added value. [0003] Because ordinary p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/86C08G63/695D01D5/253
CPCD01D5/253D01F6/84C08K3/22C08K5/523C08K2003/2241C08K3/2279C08G63/6956C08G63/6826C08G63/183C08L67/02C08G63/46C08G63/6954C08G63/866C08K5/521C08K5/524D01D5/088D01F1/10D01F6/92
Inventor 范红卫王丽丽沈建根
Owner JIANGSU HENGLI CHEM FIBER
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