Melt directly-spun colored polyester fiber and preparation method thereof

A colored polyester, melt direct spinning technology, applied in the direction of melt spinning, stretch spinning, fiber treatment, etc., can solve the problem of poor fiber gloss

Active Publication Date: 2018-05-15
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 problem of poor fiber gloss in the prior art, to

Method used

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  • Melt directly-spun colored polyester fiber and preparation method thereof
  • Melt directly-spun colored polyester fiber and preparation method thereof
  • Melt directly-spun colored polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] A kind of preparation method of melt direct spinning colored polyester fiber, the steps are as follows:

[0074] (1) preparation of modified polyester;

[0075] (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 0.05% of the weight of terephthalic acid, wherein the structural formula of 2-ethyl-2-methyl-1,3-propanediol is...

Embodiment 2

[0083] A kind of preparation method of melt direct spinning colored polyester fiber, the steps are as follows:

[0084] (1) preparation of modified polyester;

[0085] (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 antimony ethylene glycol and 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 phthalic acid, wherein the structural formula of 2,2-diethyl-1...

Embodiment 3

[0093] A kind of preparation method of melt direct spinning colored polyester fiber, the steps are as follows:

[0094] (1) preparation of modified polyester;

[0095] (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:

[0096]

[0097] (b) polycondensation reaction; after the esterificatio...

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Abstract

The invention relates to melt directly-spun colored polyester fiber and a preparation method thereof. The melt directly-spun colored polyester fiber is prepared by the steps of adding color master batch into modified polyester melt, metering, extruding, cooling, oiling, drawing, carrying out heat setting and winding; an oil agent for oiling contains crown ether, and the content of the crown etheris 67.30-85.58wt%. The preparation method is simple and reasonable, the glossiness of the finally-prepared melt directly-spun colored polyester fiber is more than or equal to 60%, the melt directly-spun colored polyester fiber is black, red, blue or yellow in color and is made of modified polyester with the molecular chain including a terephthalic-acid chain segment, an ethylene-glycol chain segment and a dihydric-alcohol chain segment with branch chains; the structural formula of dihydric alcohol is shown in the description, wherein R1 and R2 are independently and respectively selected from straight-chain alkylene with the number of carbon atoms being 1-3, R3 is selected from alkyl groups with the number of carbon atoms being 1-5, and R4 is selected from alkyl groups with the number of carbon atoms being 2-5. The melt directly-spun colored polyester fiber has the advantages of high glossiness and diversified color, so that the application prospect is very considerable.

Description

technical field [0001] The invention belongs to the field of fiber preparation and relates to a melt direct spinning colored polyester fiber and a preparation method thereof. Background technique [0002] Since its appearance, polyethylene terephthalate (PET) fiber has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fibers in the world. Polyester fiber has a series of excellent properties such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric prepared from it has wrinkle resistance. It is widely used in the fields of fiber, bottle packaging, film and sheet, etc., with the advantages of good stiffness and good stiffness. The output is increasing year by year, and the industry status has been significantly improved. [0003] However, during the pol...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/04D01F11/08C08G63/183C08G63/78D01D5/08D01D5/096D01D5/16
CPCC08G63/183C08G63/78D01D5/08D01D5/096D01D5/16D01F1/04D01F6/92D01F11/08
Inventor 王山水张建光吴锋魏存宏胡新照
Owner JIANGSU HENGLI CHEM FIBER
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