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A kind of polyester hemp-like different shrinkage composite yarn and its preparation method

A technology of different shrinkage and composite yarn, which is applied in the direction of conjugated synthetic polymer rayon, rayon manufacturing, melt spinning, etc.

Active Publication Date: 2020-05-05
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 existing technology cannot be successfully spun 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 imitation linen type different shrinkage composite yarn and preparation method thereof

Method used

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  • A kind of polyester hemp-like different shrinkage composite yarn and its preparation method
  • A kind of polyester hemp-like different shrinkage composite yarn and its preparation method
  • A kind of polyester hemp-like different shrinkage composite yarn and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0080] A preparation method of polyester imitation linen type different shrinkage composite yarn, the specific steps are as follows:

[0081] (1) spinning melt preparation;

[0082] (1.1) Preparation of modified polyester:

[0083] (a) Esterification reaction: terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol in a molar ratio of 1:1.2:0.03 are made into a slurry, and antimony trioxide is added , 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 ac...

Embodiment 2

[0092] A preparation method of polyester imitation linen type different shrinkage composite yarn, the specific steps are as follows:

[0093] (1) spinning melt preparation;

[0094] (1.1) Preparation of modified polyester:

[0095] (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 weight of ...

Embodiment 3

[0104] A preparation method of polyester imitation linen type different shrinkage composite yarn, the specific steps are as follows:

[0105] (1) spinning melt preparation;

[0106] (1.1) Preparation of modified polyester:

[0107](a) Esterification reaction: terephthalic acid, ethylene glycol, and 2-butyl-2-ethyl-1,3-propanediol in a molar ratio of 1:1.4:0.05 are made into a slurry, and antimony acetate and titanium dioxide are added 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:

[0108] ...

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Abstract

The invention relates to a polyester flax-like type different shrinkage composite yarn and a preparation method thereof. Firstly, a modified polyester yarn POY and a modified polyester yarn FDY are prepared respectively, then the modified polyester yarn POY and the modified polyester yarn FDY are compounded to prepare the polyester flax-like type different shrinkage composite yarn; the chromatic aberration [delta]E of the prepared polyester flax-like type different shrinkage composite yarn is less than 0.200; a bundle of the yarn POY or FDY extruded by a same spinneret plate contains a singleyarn shaped in a Chinese character 'wang' manner and a five-leaf single yarn; a molecular chain of modified polyester consists of a diol chain segment with a branched chain, and diol with the branchedchain has the structural formula defined in the specification, wherein R1 and R2 are straight-chain alkylene with the carbon atom number of 1-3 , R3 is alkyl with the carbon atom number of 1-5, and R4 is alkyl with the carbon atom number of 2-5. The method is simple and reasonable, and the prepared composite yarn has good fluffy property and moisture absorption and perspiration elimination properties.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a polyester hemp-like different 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 fibers to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F1/10C08G63/183C08G63/78C08G63/86D01D5/08D01D5/16D01D5/253D02G3/02
CPCC08G63/183C08G63/78C08G63/866D01D5/08D01D5/16D01D5/253D01F1/10D01F8/14D02G3/02D10B2331/04
Inventor 孙晓华王永锋赵慧荣张学东
Owner JIANGSU HENGLI CHEM FIBER
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