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

A polyester fiber and special-shaped technology, which is applied in the field of polyester spinning, can solve the problems of poor shape-keeping effect of multi-leaf special-shaped fibers, weakening the extrusion swelling effect, and reducing surface tension.

Active Publication Date: 2020-06-05
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 prior art preparation of multi-lobe special-shaped fibers, and to provide a polyester spinning method that weakens the extrusion swelling effect. The present invention introduces a small amount of rigidity into polyester molecules. The structural segment increases the rigidity of the polyester molecular chain. On the one hand, due to the low content of the rigid structural segment, the excellent properties of the polyester body can be maintained. On the other hand, the increase in the rigidity of the polyester molecular chain can weaken the extrusion swelling effect Reduce surface tension, and then prepare multi-lobe shaped fibers with better shape retention effect

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 special-shaped polyester fiber fdy yarn and preparation method thereof
  • A kind of multi-leaf special-shaped polyester fiber fdy yarn and preparation method thereof
  • A kind of multi-leaf special-shaped polyester fiber fdy yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A kind of preparation method of trilobal special-shaped polyester fiber FDY silk, at first prepare modified polyester, the steps are as follows:

[0046] (1) esterification makes dibasic acid glycol ester;

[0047] 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 and triphenyl phosphate are mixed evenly, carry out esterification reaction, the addition amount of antimony trioxide is 0.01% of the weight of terephthalic acid, the addition amount of triphenyl phosphate is 0.01% of the weight of terephthalic acid, the esterification reaction 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, it is the end of th...

Embodiment 2

[0069] A kind of preparation method of five-leaf special-shaped polyester fiber FDY silk, at first prepare modified polyester, the steps are as follows:

[0070] (1) esterification makes dibasic acid glycol ester;

[0071] 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, after adding antimony trioxide and triphenyl phosphate and mixing evenly, carry out esterification reaction, the addition of antimony trioxide is 0.015% of the weight of terephthalic acid, and the addition of triphenyl phosphate is 0.015% of the weight of terephthalic acid 0.015% by weight, the esterification reaction is pressurized in a nitrogen atmosphere, the pressurized pressure is 0.12MPa, and the temperature of the esterification reaction is 251 ° C. When the water distillation in the esterification reaction reaches 90% of the theoretical value, it ...

Embodiment 3

[0090] A kind of preparation method of trilobal special-shaped polyester fiber FDY silk, at first prepare modified polyester, the steps are as follows:

[0091] (1) esterification makes dibasic acid glycol ester;

[0092] Prepare terephthalic acid, ethylene glycol and 1,4-cyclohexanedimethanol into a slurry, and the molar ratio of terephthalic acid, ethylene glycol and 1,4-cyclohexanedimethanol is 1:1.4:0.03, After adding antimony trioxide and triphenyl phosphate and mixing evenly, carry out esterification reaction, the addition of antimony trioxide is 0.02% of the weight of terephthalic acid, and the addition of triphenyl phosphate is 0.02% of the weight of terephthalic acid , the esterification reaction is pressurized in a nitrogen atmosphere, the pressurized pressure is 0.14MPa, the temperature of the esterification reaction is 252°C, and the end of the esterification reaction is when the amount of water distilled out in the esterification reaction reaches 90% of the theore...

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Abstract

The invention belongs to the field of polyethylene terephthalate spinning and relates to a multilobal profiled polyethylene terephthalate fiber FDY (fully-drawn yarn) and a preparation method thereof. Polyethylene terephthalate refers to modified polyethylene terephthalate, and a molecular chain of the modified polyethylene terephthalate consists of a terephthalic acid chain segment, an ethylene glycol chain segment and a rigid structure chain segment, wherein the rigid structure chain segment is 2,6-naphthalic acid segment, a bisphenol A chain segment, a 1,4-cyclohexanedimethanol chain segment, a 2,2-biphenyldicarboxylic acid chain segment, a 4,4-biphenyldicarboxylic acid chain segment or a p-hydroxybenzoic acid chain segment, a molar ratio of the rigid structure chain segment to the terephthalic acid chain segment is 0.02-0.05:1, and a die-swell ratio of a modified polyethylene terephthalate melt is 1.25-1.35. The multilobal profiled polyethylene terephthalate fiber FDY is excellent in shape preserving effect.

Description

technical field [0001] The invention belongs to the field of polyester spinning, and relates to a multi-lobe special-shaped polyester fiber FDY filament 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. [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 producti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/189C08G63/185C08G63/20C08G63/672D01D5/08D01D5/253D01D5/12
CPCC08G63/185C08G63/189C08G63/20C08G63/672D01D5/08D01D5/12D01D5/253D01F1/10D01F6/92
Inventor 韦开顺朱冬妹银少和丛茂鹏
Owner JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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