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A kind of multi-leaf hollow polyester fiber fdy yarn and preparation method thereof

A polyester fiber, hollow shape technology, applied in the field of polyester spinning, can solve the problems of reducing surface tension, weakening extrusion swelling effect, poor shape retention effect of special-shaped fibers, etc.

Active Publication Date: 2019-10-01
JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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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 poor shape retention effect of the prior art for preparing special-shaped fibers, to provide a multi-lobed 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 structural segment, it can maintain the excellent characteristics of the polyester body; Small surface tension, and then prepare shaped fibers with better shape retention

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of multi-leaf hollow polyester fiber fdy yarn and preparation method thereof
  • A kind of multi-leaf hollow polyester fiber fdy yarn and preparation method thereof

Examples

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Effect test

Embodiment 1

[0051] A preparation method of trilobal hollow polyester fiber FDY yarn. Firstly, a spinning melt is prepared, and the steps are as follows:

[0052] (1) Esterification reaction to obtain dibasic acid glycol ester;

[0053] Prepare a slurry of terephthalic acid, ethylene glycol and 2,6-naphthalenedicarboxylic acid. The molar ratio of terephthalic acid, ethylene glycol and 2,6-naphthalenedicarboxylic acid is 1:1.2:0.02. After the antimony, triphenyl phosphate and aluminum stearate are evenly mixed, the esterification reaction is carried out. The addition amount of antimony trioxide is 0.01% by weight of terephthalic acid, and the addition amount of triphenyl phosphate is 0.01% by weight of terephthalic acid. %, the esterification reaction is pressurized in a nitrogen atmosphere, the pressurization pressure is 0.1MPa, the temperature of the esterification reaction is 250°C, and the esterification reaction is when the amount of water distilled in the esterification reaction reaches 90...

Embodiment 2

[0069] A preparation method of trilobal hollow polyester fiber FDY yarn. Firstly, a spinning melt is prepared, and the steps are as follows:

[0070] (1) Esterification reaction to obtain dibasic acid glycol ester;

[0071] Mix terephthalic acid, ethylene glycol and 4,4-diphthalic acid into a slurry, the molar ratio of terephthalic acid, ethylene glycol and 4,4-diphthalic acid is 1:1.8:0.046, add acetic acid After the antimony, trimethyl phosphite and zinc stearate are evenly mixed, the esterification reaction is carried out. The addition amount of antimony acetate is 0.045% by weight of terephthalic acid, and the addition amount of trimethyl phosphite is 0.045 by weight of terephthalic acid. %, the esterification reaction is reacted under pressure in a nitrogen atmosphere, the pressure is 0.24MPa, the temperature of the esterification reaction is 258℃, and the esterification reaction is when the amount of water distilled out of the esterification reaction reaches 93% of the theore...

Embodiment 3

[0091] A preparation method of trilobal hollow polyester fiber FDY yarn. Firstly, a spinning melt is prepared, and the steps are as follows:

[0092] (1) Esterification reaction to obtain dibasic acid glycol ester;

[0093] The terephthalic acid, ethylene glycol, and bisphenol A diterephthalate are prepared into a slurry, and the molar ratio of terephthalic acid, ethylene glycol and bisphenol A diterephthalate is 1: 1.3:0.025, after adding antimony trioxide, triphenyl phosphate and aluminum stearate and mixing uniformly, carry out esterification reaction. The addition amount of antimony trioxide is 0.015% of the weight of terephthalic acid, and the addition amount of triphenyl phosphate It is 0.015% of the weight of terephthalic acid. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurization pressure is 0.12MPa. The temperature of the esterification reaction is 251℃. When the amount of water distilled in the esterification reaction reaches the theoreti...

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Abstract

The invention belongs to the field of polyester spinning, and relates to a multilobal hollow polyester fiber FDY (fully drawn yarn) and a preparation method thereof. A spinning melt comprises a saturated fatty acid metal salt and modified polyester according to a mass ratio of (0.0005 to 0.002) to 1; the saturated fatty acid metal salt is a fatty acid metal salt with carbon atom number of 12 to 22, melting point of 100 to 180 DEG C, and dynamic viscosity less than or equal to 1Pa.s; a molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment and a rigid structure chain segment, the molar ratio of the rigid structure chain segment to the terephthalic acid chain segment is (0.02 to 0.05) to 1, the extrusion swelling ratio of the spinning melt is 1.20 to 1.31, and the post-filtering pressure is 80 to 120kg / cm<2> during spinning. The prepared multilobal hollow polyester fiber FDY has higher hollow degree and a better shape preserving effect.

Description

Technical field [0001] The invention belongs to the field of polyester spinning, and relates to a multi-leaf 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 and light resistance, acid and alkali resistance, and corrosion resistance. It has a series of excellent properties such as durability, and the fabric has the advantages of anti-wrinkle, non-ironing, and good crispness. It is widely used in clothing, home textiles and other fields. [0003] Home textiles are one of the three final product areas of the textile industry. With the improvement of people's quality of life, comfort, functionality, and environmental protection have increasingly become consumers' new requirements for home textiles. The polyester filament products used in home textile pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D01D5/24
Inventor 柳敦雷林枢珑于涛王峰
Owner JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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