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Imitation feather yarn polyester fiber and preparation method thereof

A yarn polyester and feather technology is applied in the field of feather-like yarn polyester fiber and its preparation, which can solve the problems of high equipment requirements, poor dyeing performance and high dyeing cost, and achieve the effect of improving the interaction force

Active Publication Date: 2020-05-22
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

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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  • Imitation feather yarn polyester fiber and preparation method thereof
  • Imitation feather yarn 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 is as follows: firstly mix terephthalic acid, ethylene glycol, dihydric alcohol containing silicon in the main chain and fluorine-containing dibasic acid, and then carry out esterification successively. Chemical reaction and polycondensation reaction to prepare modified polyester, and then use flat four-connected annular spinneret to prepare modified polyester POY yarn from modified polyester melt according to POY process, and then process modified polyester POY yarn according to DTY process Modified polyester DTY filaments are made to obtain feather-like polyester fibers; the spinneret holes of the flat four-connected ring spinneret are flat four-connected rings. The dye uptake rate of the prepared product is 89.6-93.7% at a temperature of 130°C, and its intrinsic viscosity decreases by 13-20% after being placed for 60 months at a temperature of 25°C and a relative humidity of 65%. The preparation method of the invention has simple process and low cost; the prepared product has excellent dyeing performance, fast natural degradation rate and good application prospect.

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 Patents(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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