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Functional composite fiber with controllable crimpness and preparation method of functional composite fiber

A composite fiber, functional technology, used in fiber processing, filament/thread forming, conjugated synthetic polymer rayon, etc., can solve the problems of easy generation of static electricity, poor antistatic performance, and peeling of side-by-side components. , to achieve the effect of improving dyeing performance, increasing esterification rate and easy enrichment

Inactive Publication Date: 2021-04-09
JIANGSU NEW HORIZON ADVANCED FUNCTIONAL FIBER INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, polyester fiber has a basic problem of high resistance and poor antistatic performance, which makes the fabric prone to static electricity, and ultimately leads to a decrease in user comfort when wearing it.
In addition, because the dyeing temperature of polytrimethylene terephthalate and polyethylene terephthalate has a certain difference, the temperature will be too high during dyeing, causing the parallel components to peel off, resulting in a decrease in curl

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A method for preparing a composite fiber with controllable functional crimp, comprising the steps of:

[0054] (1) Stir and beat dibasic alcohol and dibasic acid in a high-speed mixer to make it fully blended to prepare a slurry, wherein the molar ratio of the hydroxyl functional group of ethylene glycol to the carboxyl functional group of terephthalic acid is 1.2:1 ;

[0055] (2) Preheat the reactor, add the slurry, catalyst (titanium glycolate), anhydrous sodium acetate and triphenyl phosphite into the reactor when the temperature of the reactor reaches 200°C, and fill the reactor with nitrogen to the pressure inside the reactor is 0.25MPa, slowly warming up to a temperature of 245°C, and carrying out a pressurized esterification reaction to obtain esterified product I; wherein, the addition amount of the catalyst is 100ppm of the total mass of terephthalic acid; the addition amount of anhydrous sodium acetate is terephthalic acid 0.018% of the total mass of diformic...

Embodiment 2

[0065] A method for preparing a composite fiber with controllable functional crimp, comprising the steps of:

[0066] (1) Stir and beat dibasic alcohol and dibasic acid in a high-speed mixer to make it fully blended to prepare a slurry, wherein the molar ratio of the hydroxyl functional group of ethylene glycol to the carboxyl functional group of terephthalic acid is 1.3:1 ;

[0067] (2) Preheat the reactor, add the slurry, catalyst (antimony trioxide), anhydrous sodium acetate and triphenyl phosphite into the reactor when the temperature of the reactor reaches 205°C, and fill the reactor with nitrogen to the pressure inside the reactor is 0.22MPa, slowly warming up to a temperature of 243°C, and carrying out a pressurized esterification reaction to obtain esterified product I; wherein, the addition amount of the catalyst is 500ppm of the total mass of terephthalic acid; the addition amount of anhydrous sodium acetate is terephthalic acid 0.002% of the total mass of dicarboxy...

Embodiment 3

[0077] A method for preparing a composite fiber with controllable functional crimp, comprising the steps of:

[0078] (1) Stir and beat dibasic alcohol and dibasic acid in a high-speed mixer to make a slurry by fully blending, wherein the molar ratio of the hydroxyl functional group of ethylene glycol to the carboxyl functional group of terephthalic acid is 1.4:1 ;

[0079] (2) Preheat the reactor, and when the temperature of the reactor reaches 222°C, add the slurry, catalyst (antimony acetate), anhydrous sodium acetate and triphenyl phosphite into the reactor, and fill the reactor with nitrogen until the pressure in the reactor is 0.15 MPa, slowly warming up to a temperature of 235°C, carrying out a pressurized esterification reaction to obtain esterified product I; wherein, the addition of the catalyst is 310ppm of the total mass of terephthalic acid; the addition of anhydrous sodium acetate is terephthalic acid 0.01% of the total mass; the addition of triphenyl phosphite ...

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Abstract

The invention relates to a functional composite fiber with controllable crimpness and a preparation method of the functional composite fiber. The preparation method includes the following steps: using polytrimethylene terephthalate as a component A, using functional copolymerization modified polyethylene glycol terephthalate as a component B, carrying out melt spinning through a double-component parallel composite spinning process, and thus preparing a double-component parallel composite fiber; wherein the preparation process of the functional copolymerization modified polyethylene glycol terephthalate comprises the following steps: firstly, taking terephthalic acid and ethylene glycol as main raw materials to carry out a esterification reaction to prepare an ester I; and mixing the ester with polyglycol, carrying out transesterification to obtain an ester II, and finally carrying out condensation polymerization to obtain the functional copolymerization modified polyethylene glycol terephthalate; the glass-transition temperature of the component A is 45-65 DEG C; the component B is mainly composed of polyglycol with the glass-transition temperature of 20-40 DEG C and polyester with the glass-transition temperature of 60-80 DEG C; and the surface contact angle of the parallel composite fiber is 65-75 degrees, the resistivity is 1*10<7>-1*10<9> omega*cm, and the crimpness is 60.0-65.0%.

Description

technical field [0001] The invention belongs to the technical field of functional fibers, and relates to a functional composite fiber with controllable crimp and a preparation method thereof. Background technique [0002] Synthetic fibers have been developed for 70 to 80 years. They were initially used in the field of clothing, and only a few commonly used fibers were mainly developed, such as polyester and nylon. Since 1960, with the improvement of the performance of synthetic fibers, the variety has also been expanding. Special fibers, superfine fibers, elastic fibers and industrial high-strength fibers have developed rapidly. The requirements of modern clothing have been rapidly developed from the earliest goal of satisfying basic warmth to the direction of fashion and comfort. Among the many functional and differentiated fibers, fibers and products with certain elastic properties can give a good sense of human body contact. At present, elastic fibers have been widely u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/23D01D5/32D01D5/253D01F8/14
CPCD01D5/23D01D5/253D01D5/32D01F8/14
Inventor 徐锦龙吉鹏乌婧王华平王玉萍梅峰
Owner JIANGSU NEW HORIZON ADVANCED FUNCTIONAL FIBER INNOVATION CENT CO LTD
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