Preparation method of polyester drawn textured yarns for hollow diamond fabrics

A polyester low-elastic yarn and fabric technology, applied in the field of modified polyester fiber, can solve the problems of low accuracy and clarity of color patterns, difficult to meet, poor dyeing effect, etc., and achieve the effect of excellent air permeability

Active Publication Date: 2019-05-10
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the poor dyeing effect of conventional polyester DTY tow, the accuracy and clarity of the color patterns on the hollow diamond-shaped fabric made by using it are low, and it is difficult to meet people's needs for high-quality hollow diamond-shaped fabrics.

Method used

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  • Preparation method of polyester drawn textured yarns for hollow diamond fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The preparation method of polyester low-stretch yarn for hollow diamond-shaped fabric, the steps are as follows:

[0052] (1) prepare modified polyester;

[0053] (1.1) Esterification reaction;

[0054]Make a slurry of terephthalic acid, ethylene glycol, and dimethylsilanediol, add antimony trioxide, titanium dioxide, and triphenyl phosphate and mix evenly, pressurize in a nitrogen atmosphere for esterification, pressurize The pressure is 0.3MPa, the temperature of the esterification reaction is 250 ° 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, of which terephthalic acid, ethylene glycol and dimethylsilyl The molar ratio of alcohol is 1:1.2:0.05, and the additions of antimony trioxide, titanium dioxide and triphenyl phosphate are respectively 0.03wt%, 0.22wt% and 0.02wt% of the addition of terephthalic acid;

[0055] (1.2) polycondensation reaction;

[0056] A...

Embodiment 2

[0072] The preparation method of polyester low-stretch yarn for hollow diamond-shaped fabric, the steps are as follows:

[0073] (1) prepare modified polyester;

[0074] (1.1) Esterification reaction;

[0075] Make a slurry of terephthalic acid, ethylene glycol, and dimethyldiphenyldisiloxane diol, add antimony trioxide, titanium dioxide, and trimethyl phosphate, mix evenly, and pressurize in a nitrogen atmosphere. For the esterification reaction, the pressurized pressure is 0.2MPa, the temperature of the esterification reaction is 252°C, and when the amount of water distilled out in the esterification reaction reaches 90% of the theoretical value, it is the end point of the esterification reaction. The molar ratio of diol and dimethyldiphenyldisiloxane diol is 1:1.2:0.03, and the additions of antimony trioxide, titanium dioxide and trimethyl phosphate are respectively 0.04wt% of the addition of terephthalic acid , 0.20wt% and 0.04wt%;

[0076] (1.2) polycondensation reacti...

Embodiment 3

[0085] The preparation method of polyester low-stretch yarn for hollow diamond-shaped fabric, the steps are as follows:

[0086] (1) prepare modified polyester;

[0087] (1.1) Esterification reaction;

[0088] Make a slurry of terephthalic acid, ethylene glycol, and tetramethyldisiloxane diol, add ethylene glycol antimony, titanium dioxide, and trimethyl phosphite, mix evenly, and pressurize in a nitrogen atmosphere for esterification Reaction, pressurized pressure is 0.1MPa, the temperature of esterification reaction is 255 ℃, 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, wherein terephthalic acid, ethylene glycol and The molar ratio of tetramethyldisiloxane diol is 1:1.5:0.03, and the additions of ethylene glycol antimony, titanium dioxide and trimethyl phosphite are respectively 0.05wt% and 0.24wt% of the terephthalic acid addition and 0.01% by weight;

[0089] (...

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Abstract

The invention relates to a preparation method of polyester drawn textured yarns for hollow diamond fabrics. The preparation method comprises the following steps: preparing modified polyester POY yarnsfrom modified polyester melt according to a POY process, processing the yarns according to a DTY process, arranging a trench-breaking roller and a variable frequency shifter between a zero roller anda first roller of DTY equipment, enabling modified polyester tows to pass through the surface of the trench-breaking roller, and dyeing, thereby obtaining the polyester drawn textured yarns for hollow diamond fabrics. The preparation method of the modified polyester comprises the following steps: uniformly mixing terephthalic acid, ethylene glycol and dihydric alcohol containing silicon on the main chain, and sequentially carrying out an esterification reaction and a condensation polymerization reaction so as to prepare modified polyester. The prepared polyester drawn textured yarns for hollow diamond fabrics have the dye-uptake of 88.3-91.2% under the temperature condition of 130 DEG C, and also have the K/S value of 22.62-25.54. The preparation method disclosed by the invention is reasonable in operation, and the prepared polyester drawn textured yarns for hollow diamond fabrics have excellent dyeing properties.

Description

technical field [0001] The invention belongs to the technical field of modified polyester fibers, and relates to a preparation method of polyester low elastic yarns for hollow diamond-shaped fabrics. Background technique [0002] Polyester is the trade name of polyester fiber in my country and is an important variety of synthetic fibers. It is made of terephthalic acid (PAT) or dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw materials. Polyethylene terephthalate (PET), a fiber-forming high polymer prepared by chemical reaction or transesterification reaction and polycondensation reaction, is a fiber made by spinning and post-processing. 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...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/695C08G63/86D02G1/00D02G1/14D02G1/20
Inventor 马文平周文龙孙晓华
Owner JIANGSU HENGLI CHEM FIBER
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