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A kind of 8-shaped hollow polyester fiber fdy yarn and preparation method thereof

A technology of polyester fiber and hollow shape, which is applied in the field of polyester spinning, can solve the problems of poor shape retention effect of special-shaped fibers, weaken extrusion swelling effect, etc., achieve good shape retention effect, improve shape retention effect, and design effect ideal effect

Active Publication Date: 2019-08-27
JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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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 poor shape retention effect of the prior art for preparing special-shaped fibers, and to provide a figure-eight hollow polyester fiber FDY filament and its preparation method. The present invention introduces a small amount of rigid structure into the polyester molecule The chain segment increases the rigidity of the polyester molecular chain. On the one hand, due to the small content of the rigid structure segment, the excellent characteristics of the polyester body can be maintained; Preparation of shaped fibers with better shape retention

Method used

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  • A kind of 8-shaped hollow polyester fiber fdy yarn and preparation method thereof
  • A kind of 8-shaped hollow polyester fiber fdy yarn and preparation method thereof

Examples

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Effect test

Embodiment 1

[0048] A kind of preparation method of 8-shaped hollow polyester fiber FDY silk, at first prepare spinning melt, the steps are as follows:

[0049] (1) esterification makes dibasic acid glycol ester;

[0050] Prepare terephthalic acid, ethylene glycol and 2,6-naphthalene dicarboxylic acid into a slurry, the molar ratio of terephthalic acid, ethylene glycol and 2,6-naphthalene dicarboxylic acid is 1:1.2:0.02, add di After antimony, triphenyl phosphate and aluminum stearate are mixed evenly, carry out esterification reaction, the addition amount of antimony trioxide is 0.01% of the weight of terephthalic acid, and the addition amount of triphenyl phosphate is 0.01% of the weight of terephthalic acid. %, the esterification reaction is a pressurized reaction in a nitrogen atmosphere, the pressurized pressure is 0.1MPa, the temperature of the esterification reaction is 250 ° C, when the amount of water distilled in the esterification reaction reaches 90% of the theoretical value, i...

Embodiment 2

[0066] A kind of preparation method of 8-shaped hollow polyester fiber FDY silk, at first prepare spinning melt, the steps are as follows:

[0067] (1) esterification makes dibasic acid glycol ester;

[0068] Make a slurry of terephthalic acid, ethylene glycol and 4,4-biphenyl dicarboxylic acid, the molar ratio of terephthalic acid, ethylene glycol and 4,4-biphenyl dicarboxylic acid is 1:1.8:0.046, add acetic acid After antimony, trimethyl phosphite and zinc stearate are mixed evenly, carry out esterification reaction, the addition of antimony acetate is 0.045% of the weight of terephthalic acid, the addition of trimethyl phosphite is 0.045% of the weight of terephthalic acid %, the esterification reaction is a pressurized reaction in a nitrogen atmosphere, the pressurized pressure is 0.24MPa, the temperature of the esterification reaction is 258 ° C, when the amount of water distilled in the esterification reaction reaches 93% of the theoretical value, it is an esterification...

Embodiment 3

[0088] A kind of preparation method of 8-shaped hollow polyester fiber FDY silk, at first prepare spinning melt, the steps are as follows:

[0089] (1) esterification makes dibasic acid glycol ester;

[0090] The diterephthalate of terephthalic acid, ethylene glycol and bisphenol A is made into slurry, and the mol ratio of the diterephthalate of terephthalic acid, ethylene glycol and bisphenol A is 1: 1.3:0.025, add antimony trioxide, triphenyl phosphate and aluminum stearate and mix evenly, then carry out esterification reaction, the amount of antimony trioxide added is 0.015% of the weight of terephthalic acid, the amount of triphenyl phosphate added It is 0.015% of the weight of terephthalic acid. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0.12 MPa, and the temperature of the esterification reaction is 251 ° C. When the amount of water distilled in the esterification reaction reaches the theoretical value 90% of the tim...

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Abstract

The invention belongs to the polyester spinning field and relates to an 8-shaped hollow polyester fiber FDY (Fully Drawn Yarn) and a preparation method thereof. A spinning melt contains saturated fatty acid metal salt and modified polyester, wherein the mass ratio of saturated fatty acid metal salt to modified polyester is (0.0005-0.002) to 1; saturated fatty acid metal salt is fatty acid metal salt, the carbon atomic number is 12-22, the melting point is 100-180 DEG C, and the kinetic viscosity is less than or equal to 1Pa.s; a molecular chain of modified polyester comprises a terephthalic acid chain segment, a glycol chain segment and a rigid structure chain segment, and the molar ratio of the rigid structure chain segment to the terephthalic acid chain segment is (0.02-0.05) to 1; and the die swell ratio of the spinning melt is 1.23-1.33, and the after-filtration pressure during the spinning is 85-125kg / cm<2>. The prepared 8-shaped hollow polyester fiber FDY has relatively high degree of hollowness and relatively good shape-preserving effect.

Description

technical field [0001] The invention belongs to the field of polyester spinning, and relates to a figure-eight hollow polyester fiber FDY yarn and a preparation method thereof. Background technique [0002] Since its inception, polyethylene terephthalate (PET fiber or polyester fiber) fiber has high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance. It has a series of excellent performances, such as anti-wrinkle and non-ironing, and good crispness. It is widely used in clothing, home textiles and other fields. However, polyester fiber also has disadvantages such as poor hygroscopicity, non-sweat-absorbing fabric, stuffy feeling when worn, and not easy to color, which greatly restricts the application and development of polyester fiber. [0003] With the improvement of people's living standards and quality of life, there are higher and high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D01D5/08D01D5/253D01D5/12C08G63/189C08G63/185C08G63/20C08G63/672
Inventor 印成朱冬妹张正勇陆军
Owner JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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