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Porous super-bright polyester fiber and preparation method thereof

A polyester fiber and bright light technology, applied in the direction of fiber chemical characteristics, single-component polyester rayon, rayon manufacturing, etc., can solve the problem of destroying the regularity of the chain segment, the difficulty of coloring polyester fibers, and the difficulty of dyeing PET fibers And other issues

Active Publication Date: 2015-04-22
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the molecular chain of PET is regular, the crystallinity is good, the molecular chain is closely arranged, and there is no polar group that interacts with the dye molecule on the molecular chain, which makes the coloring of polyester fiber more difficult.
[0004] In order to solve the problem of PET fiber dyeing difficulties, the current technology or method is mainly through the introduction of dye molecule acceptors or the method of increasing the amount of polyester amorphous regions. Although the dyeing performance of polyester can be improved, the chain segment regularity of PET is destroyed. , in order to reduce the performance of polyester fiber to obtain the improvement of dyeing performance

Method used

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  • Porous super-bright polyester fiber and preparation method thereof
  • Porous super-bright polyester fiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0081] A preparation method of porous ultra-bright polyester fiber, comprising the following steps

[0082] (1) Preparation of amino fatty acid ethylene glycol ester:

[0083] 1) Add dodecanedicarboxylic acid and methanol into the reactor at a molar ratio of 1:1.5, heat to 80°C under the catalysis of concentrated sulfuric acid, reflux for esterification, cool, separate and purify to obtain dodecanedicarboxylic acid Acid monomethyl ester; Described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of dodecane dicarboxylic acid;

[0084] 2) Dissolve the monomethyl dodecanedicarboxylate, lead tetraacetate and lithium bromide in benzene (molar ratio 1:1:1), wherein the monomethyl dodecanedicarboxylate concentration is 0.05mol / L , under a nitrogen atmosphere, react at 80 ° C, reflux, when no more gas is produced, add a certain amount of dilute sulfuric acid to react for 2 hours, then wash, purif...

Embodiment 2

[0114] A preparation method of porous ultra-bright polyester fiber, comprising the following steps:

[0115] (1) Preparation of amino fatty acid ethylene glycol ester:

[0116] 1) Add pentacodecanedicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, under the catalysis of concentrated sulfuric acid, heat to 110°C, reflux for esterification, cool, separate and purify to obtain pentacodecane Dicarboxylic acid monomethyl ester; Described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of pentacosane dicarboxylic acid;

[0117] 2) The monomethyl pentacodecanedicarboxylate, lead tetraacetate and lithium bromide are dissolved in benzene (molar ratio 1:1:1), wherein the concentration of monomethyl pentacodecanedicarboxylate is 0.07mol / L, under nitrogen atmosphere, react at 85°C, reflux, when no more gas is generated, add a certain amount of dilute sulfuric acid to react fo...

Embodiment 3

[0147] A preparation method of porous ultra-bright polyester fiber, comprising the following steps:

[0148] (1) Preparation of amino fatty acid ethylene glycol ester:

[0149] 1) Add pentadecanedicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, under the catalysis of concentrated sulfuric acid, heat to 85°C, reflux for esterification, cool, separate and purify to obtain pentadecanedicarboxylic acid acid monomethyl ester; described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of pentadecanedicarboxylic acid;

[0150] 2) Dissolve the monomethyl pentadecanedicarboxylate, lead tetraacetate and lithium bromide in benzene (molar ratio 1:1:1), wherein the concentration of monomethyl pentadecanedicarboxylate is 0.08mol / L , under nitrogen atmosphere, react at 90°C, reflux, when no more gas is produced, add a certain amount of dilute sulfuric acid to react for 2.5 hours,...

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Abstract

The invention relates to porous super-bright polyester fiber and a preparation method of the porous super-bright polyester fiber. According to the porous super-bright polyester fiber, melt spinning, multi-pore forming, section heteromorphosis and the like are conducted to make the polyester fiber have the super-bright flickering effect, and the material is modified polyester; a linear spinneret plate is adopted in the melt spinning process; the modified polyester is composed of polyester and amidogen fatty acid glycol ester, the amidogen fatty acid glycol ester is dispersed among the molecular chains of the polyester, and the free volume space of the porous super-bright polyester fiber polyester among the molecular chains inside the fiber is increased by 20 v/v% to 30 v/v% under the condition that the temperature ranges from 90 DEG C to 130 DEG C; the porous super-bright polyester fiber can be used for silk-like fabric, wool-like fabric, corduroy, other pile fabric, woolen yarn, decorative fabric and the like.

Description

technical field [0001] The invention belongs to the technical field of modified fibers, and relates to a porous super bright 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 and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric has the advantages of wrinkle resistance and good stiffness, so , Polyester fibers are widely used in clothing, home textiles and other fields. [0003] PET is a symmetrical linear macromolecule, the molecular chain does not contain side chain groups, and its regularity is very good. Its main chain contains a rigid benzen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/78
Inventor 王山水张建光熊克王丽丽邵义伟
Owner JIANGSU HENGLI CHEM FIBER
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