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Elastic polyester fiber with low melting point and preparation method of elastic polyester fiber

An elastic polyester, low melting point technology, applied in the field of polyester fiber, can solve the problem of fiber sticking phenomenon and high aldehyde content, achieve the effect of low cost, improve fiber softness, and avoid sticking

Active Publication Date: 2020-04-03
扬州富威尔复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems in the prior art that while trying to reduce the initial modulus of the fiber, the fiber is prone to sticking and the content of aldehyde in the low-melting point elastic polyester fiber is too high, to provide a low-melting point elastic polyester fiber and its Preparation

Method used

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  • Elastic polyester fiber with low melting point and preparation method of elastic polyester fiber
  • Elastic polyester fiber with low melting point and preparation method of elastic polyester fiber
  • Elastic polyester fiber with low melting point and preparation method of elastic polyester fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of low melting point elastic polyester fiber, its preparation process is basically as follows:

[0052] (1) esterification reaction;

[0053] Phthalic acid (terephthalic acid and isophthalic acid), ethylene glycol, polytetrahydrofuran with a number average molecular weight of 1500, calcium isophthalate sulfonate and polybutylene adipate with a number average molecular weight of 500 After the ester is made into a slurry, it is reacted at a temperature of 180 ° C and a nitrogen atmosphere until the water distillate reaches 90% of the theoretical value; among them, terephthalic acid, isophthalic acid, ethylene glycol and isophthalic acid sulfonic acid The molar ratio of calcium acid is 1:0.4:1.5:0.01, and the mass addition of polytetrahydrofuran is 20% of the mass addition of phthalic acid (that is, the sum of the mass additions of terephthalic acid and isophthalic acid). The mass add-on of butylene adipate is 3% of the mass add-on of phthalic acid;

[0054] (2) p...

Embodiment 2

[0066] A kind of low melting point elastic polyester fiber, its preparation process is basically as follows:

[0067] (1) esterification reaction;

[0068] Phthalic acid (terephthalic acid and isophthalic acid), ethylene glycol, polytetrahydrofuran with a number average molecular weight of 1600, zinc isophthalate sulfonate, and polytrimethylene adipate with a number average molecular weight of 600 were formulated. After the slurry is formed, the reaction is carried out at a temperature of 200 ° C and a nitrogen atmosphere until the water distillate reaches 92% of the theoretical value; among them, terephthalic acid, isophthalic acid, ethylene glycol and isophthalic acid zinc sulfonate The molar ratio is 1:0.5:1.7:0.01, the mass add-on of polytetrahydrofuran is 23% of the mass add-on of phthalic acid, and the mass add-on of polytrimethylene adipate is 3.5% of the mass add-on of phthalic acid;

[0069] (2) polycondensation reaction;

[0070] In the system of step (1), add n-bu...

Embodiment 3

[0075] A kind of low melting point elastic polyester fiber, its preparation process is basically as follows:

[0076] (1) esterification reaction;

[0077] After mixing phthalic acid (terephthalic acid and isophthalic acid), ethylene glycol, polytetrahydrofuran with a number average molecular weight of 1650, magnesium isophthalate sulfonate and 1,5-pentanediol into a slurry, The reaction was carried out at a temperature of 198 ° C and a nitrogen atmosphere until the water distillate reached 95% of the theoretical value; wherein, the molar ratio of terephthalic acid, isophthalic acid, ethylene glycol and magnesium isophthalate sulfonate was 1 : 0.6:1.8:0.03, the mass addition of polytetrahydrofuran is 25% of the mass addition of phthalic acid, and the mass addition of 1,5-pentanediol is 25% of the mass addition of phthalic acid;

[0078] (2) polycondensation reaction;

[0079] In the system of step (1), add n-butyl titanate and trimethyl phosphite, and react for 30min under t...

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Abstract

The invention relates to an elastic polyester fiber with a low melting point and a preparation method of the elastic polyester fiber. After elastic polyester is prepared by using phthalic acid (terephthalic acid and isophthalic acid), glycol, polytetrahydrofuran, a glass-transition temperature modifier (M-phthalate sulfonate) and a macromolecular modulus modifier (aliphatic ester or long-chain diol of which the number of carbon atoms is more than or equal to 5) as main reaction raw materials, the elastic polyester fibers with the low melting point is prepared by spinning, and when in spinning,the material of metal sand in a spinning component is Ni. The prepared elastic polyester fibers with the low melting point are made of elastic polyester, and molecular chains of the elastic polyesterare composed of phthalic acid chain segments, glycol chain segments, polytetrahydrofuran chain segments, glass-transition temperature modifier chain segments and macromolecular modulus modifier chainsegments; and the total content of acetaldehyde and butenal in the elastic polyester fibers with the low melting point is less than 0.5ppm. According to the elastic polyester fiber with the low melting point and the preparation method of the elastic polyester fiber, occurrence of an adhesion phenomenon can be avoided while fiber softness is improved, and the content of aldehyde compounds in the fiber is reduced.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a low-melting point elastic polyester fiber and a preparation method thereof. Background technique [0002] Polyester fibers are strong, durable, wrinkle-resistant, stiff, washable and wearable, and versatile, making them one of the most in-demand and fastest-growing synthetic fibers. Despite the excellent performance of polyester fibers, conventional and single polyester fibers have been unable to meet people's various needs. To improve this situation, the diversification of polyester fibers must be accelerated. [0003] Polyester elastic fiber has good dimensional stability and low modulus, the fiber and its products have soft hand, good abrasion resistance and fiber crimp, excellent tensile elasticity and compression elasticity, and also has good dyeing properties , The dyeing temperature is low, the color fastness and chlorine resistance are excellent, and it has exc...

Claims

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Application Information

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IPC IPC(8): D01F6/84C08G63/688
CPCC08G63/6886D01F6/84
Inventor 张盛任广雨
Owner 扬州富威尔复合材料有限公司
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