Differential-shrinkage cotton-like composite filament and preparation method thereof

A composite yarn and differential shrinkage technology, which is applied in the field of fiber manufacturing, can solve the problems of increased air content in PET differential shrinkage mixed fiber composite yarn fabrics, etc.

Active Publication Date: 2015-04-29
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased air content in PET different

Method used

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  • Differential-shrinkage cotton-like composite filament and preparation method thereof
  • Differential-shrinkage cotton-like composite filament and preparation method thereof
  • Differential-shrinkage cotton-like composite filament and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0088] Example 1

[0089] A preparation method of cotton-like different shrinkage composite yarn includes the following steps:

[0090] (1) Preparation of amino fatty acid glycol ester:

[0091] 1) Add dodecane dicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, heated to 80°C under the catalysis of concentrated sulfuric acid, reflux esterification, cooling, separation and purification to obtain dodecane dicarboxylic acid Monomethyl acid; the concentrated sulfuric acid refers to sulfuric acid with a mass concentration of 70%, and the added amount of concentrated sulfuric acid is 3wt% of dodecane dicarboxylic acid;

[0092] 2) The monomethyl dodecane dicarboxylate, lead tetraacetate and lithium bromide are dissolved in benzene (molar ratio 1:1:1), wherein the concentration of monomethyl dodecane dicarboxylate is 0.05 mol / L , In a nitrogen atmosphere, react at 80°C and reflux. When no more gas is generated, add a certain amount of dilute sulfuric acid to react fo...

Example Embodiment

[0137] Example 2

[0138] A preparation method of cotton-like different shrinkage composite yarn includes the following steps:

[0139] (1) Preparation of amino fatty acid glycol ester:

[0140] 1) Put penictodecane dicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, catalyzed by concentrated sulfuric acid, heated to 110°C, refluxed for esterification, cooled, and separated and purified to obtain penicodecane Monomethyl dicarboxylate; the concentrated sulfuric acid refers to sulfuric acid with a mass concentration of 70%, and the added amount of concentrated sulfuric acid is 3wt% of Pentadodecane dicarboxylic acid;

[0141] 2) Dissolve the said pentadodecane dicarboxylic acid monomethyl ester, lead tetraacetate and lithium bromide in benzene (molar ratio 1:1:1), wherein the concentration of pentadodecane dicarboxylic acid monomethyl ester is 0.07 mol / L, under nitrogen atmosphere, react at 85℃, reflux, when no more gas is generated, add a certain amount of dilu...

Example Embodiment

[0185] Example 3

[0186] A preparation method of cotton-like different shrinkage composite yarn includes the following steps:

[0187] (1) Preparation of amino fatty acid glycol ester:

[0188] 1) Add pentadecane dicarboxylic acid and methanol to the reactor in a molar ratio of 1:1.5, catalyze by concentrated sulfuric acid, heat to 85°C, reflux and esterify, cool, separate and purify to obtain pentadecane dicarboxylic acid Monomethyl acid; the concentrated sulfuric acid refers to sulfuric acid with a mass concentration of 70%, and the added amount of concentrated sulfuric acid is 3wt% of pentadecane dicarboxylic acid;

[0189] 2) Dissolve the monomethyl pentadecane dicarboxylate, lead tetraacetate and lithium bromide in benzene (molar ratio 1:1:1), wherein the concentration of monomethyl pentadecane dicarboxylate is 0.08 mol / L , Under a nitrogen atmosphere, react at 90°C and reflux. When no gas is generated, add a certain amount of dilute sulfuric acid to react for 2.5 hours, then w...

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Abstract

The invention relates to a differential-shrinkage cotton-like composite filament and preparation method thereof; the differential-shrinkage cotton-like composite filament is a composite filament blended by a modified polyester POY filament and a modified polyester FDY filament; the modified polyester consists of polyester and aminoadipic acid glycol ester; the aminoadipic acid glycol ester is dispersed among the molecular chains of the polyester; and the aminoadipic acid glycol ester takes effect of hydrogen bond among the molecular chains of the polyester, so as to stabilize the positions of the aminoadipic acid glycol ester with respect to the molecular chains of the polyester; in condition of the temperature is 90-130 degrees centigrade, the free volume spaces among the molecular chains inside the fiber of the differential-shrinkage cotton-like composite filament are increased by 20-30v/v%. The aliphatic ester increases the free volume of the polyester fiber in order to increase the diffusion degree of the dye, thereby increasing the dyeing performance of the polyester fiber. The differential-shrinkage cotton-like composite filament is applicable to clothes fabric, bedding article, decoration article, and the like.

Description

technical field [0001] The invention belongs to the technical field of fiber manufacturing, and relates to a cotton-like different shrinkage composite yarn 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...

Claims

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Application Information

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IPC IPC(8): D02G3/02D01F6/92D01F1/10C08G63/183D06P1/16D06P3/54C07C229/08C07C227/18
CPCC08G63/6856D01F1/10D01F6/92D02G3/045D06P1/16D06P3/54
Inventor 汤方明简维权马文平张学东沈建根
Owner JIANGSU HENGLI CHEM FIBER
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