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Polyester cotton-like type differential shrinkage composite yarns and preparation method thereof

A technology of iso-shrinkage and composite yarn, applied in the direction of single-component polyester rayon, rayon manufacturing, filament/thread forming, etc., to achieve the effect of excellent performance

Active Publication Date: 2018-08-10
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the prior art cannot be smoothly spun and processed to obtain fibers with good bulkiness and moisture absorption and perspiration performance, and to provide a fiber with good bulkiness and moisture absorption and perspiration performance that can be successfully spun and processed. Polyester cotton-like different shrinkage composite yarn and its preparation method

Method used

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  • Polyester cotton-like type differential shrinkage composite yarns and preparation method thereof
  • Polyester cotton-like type differential shrinkage composite yarns and preparation method thereof
  • Polyester cotton-like type differential shrinkage composite yarns and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] A kind of preparation method of polyester imitation cotton type differential shrinkage composite yarn, concrete steps are as follows:

[0085] (1) spinning melt preparation;

[0086] (1.1) Preparation of modified polyester:

[0087] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol in a molar ratio of 1:1.2:0.03 into a slurry, and add antimony trioxide , titanium dioxide and triphenyl phosphate are mixed evenly, and the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressurized pressure is normal pressure, and the temperature of the esterification reaction is 250°C. 90% of the value is the end point of the esterification reaction, wherein the addition of antimony trioxide is 0.01% of the weight of terephthalic acid, the addition of titanium dioxide is 0.20% of the weight of terephthalic acid, and the addition of triphenyl phosphate It is 0.05% of the weight of terephthalic ...

Embodiment 2

[0097] A kind of preparation method of polyester imitation cotton type differential shrinkage composite yarn, concrete steps are as follows:

[0098] (1) spinning melt preparation;

[0099] (1.1) Preparation of modified polyester:

[0100] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2,2-diethyl-1,3-propanediol in a molar ratio of 1:1.3:0.04 into a slurry, add ethylene glycol antimony, titanium dioxide After mixing evenly with trimethyl phosphate, carry out the esterification reaction under pressure in a nitrogen atmosphere. The pressurized pressure is normal pressure, and the temperature of the esterification reaction is 260°C. 91% is the end point of the esterification reaction, wherein the addition of ethylene glycol antimony is 0.02% of the weight of terephthalic acid, the addition of titanium dioxide is 0.21% of the weight of terephthalic acid, and the addition of trimethyl phosphate is 0.02% of the weight of terephthalic acid. 0.03% by we...

Embodiment 3

[0110] A kind of preparation method of polyester imitation cotton type differential shrinkage composite yarn, concrete steps are as follows:

[0111] (1) spinning melt preparation;

[0112] (1.1) Preparation of modified polyester:

[0113] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2-butyl-2-ethyl-1,3-propanediol in a molar ratio of 1:1.4:0.05 into a slurry, add antimony acetate and titanium dioxide After mixing evenly with trimethyl phosphite, carry out esterification reaction under pressure in a nitrogen atmosphere. 92% is the end point of the esterification reaction, wherein the addition of antimony acetate is 0.03% of the weight of terephthalic acid, the addition of titanium dioxide is 0.23% of the weight of terephthalic acid, and the addition of trimethyl phosphite is 0.03% of the weight of terephthalic acid. 0.01% by weight of phthalic acid, wherein the structural formula of 2-butyl-2-ethyl-1,3-propanediol is as follows:

[0114]

...

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Abstract

The invention relates to polyester cotton-like type differential shrinkage composite yarns and a preparation method thereof. The preparation method comprises the following steps: respectively preparing modified polyester POY (Pre-Oriented Yarn) and FDY (Fully Drawn Yarn) wires, and then compounding the POYs with the FDYs to prepare the polyester cotton-like type differential shrinkage composite yarns, wherein the color difference delta E of the prepared composite yarns is less than 0.200, a beam of POYs or FDYs extruded by the same yarn spraying plate simultaneously contains crossed single yarns and trefoiled single yarns; a molecular chain of the modified polyester comprises a branched diol chain segment, a structural formula of the branched diol is as follows: the formula (1) is shown inthe description; in the formula, R1 and R2 are straight-chain alkylene with carbon atomic number 1-3, R3 is alkyl with carbon atomic number 1-5, R4 is alkyl with carbon atomic number 2-5, and a matteagent dispersed in the modified polyester is amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and the amorphous silicon dioxide. The method disclosed by theinvention is simple and reasonable, and the prepared composite yarns have good fluffy, moisture absorption and perspiration performance.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a polyester-like cotton-like differential shrinkage composite yarn and a preparation method thereof. Background technique [0002] Since its inception, polyethylene terephthalate (PET fiber or polyester fiber) fiber has high breaking strength, high elastic modulus, moderate resilience, excellent heat setting, good heat and light resistance, and acid and alkali resistance. A series of excellent properties such as corrosion resistance are widely used in clothing and home textiles and other fields. [0003] With the development of modern textile technology and the continuous improvement of people's living standards, people put forward higher requirements for the output, performance and quality of chemical fibers used in clothing, decorative and industrial textiles. Therefore, in recent years, researchers have devoted themselves to chemical Research and development of new varieties of...

Claims

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Application Information

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IPC IPC(8): D02G3/02D01D5/253D01F6/92D01F1/10C08G63/183C08G63/16C08G63/78
CPCC08G63/16C08G63/183C08G63/78D01D5/253D01F1/10D01F6/92D02G3/02D10B2331/04
Inventor 王山水卓怀智孙晓华马文平
Owner JIANGSU HENGLI CHEM FIBER
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