Double-abnormal-shape fiber and preparation method thereof

A double-shape, fiber technology, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problem that the fiber cannot have stiffness and softness at the same time, and achieve the effect of excellent performance

Active Publication Date: 2018-06-08
JIANGSU HENGLI CHEM FIBER
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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 problem that the fibers in the prior art cannot simultaneously h

Method used

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  • Double-abnormal-shape fiber and preparation method thereof
  • Double-abnormal-shape fiber and preparation method thereof
  • Double-abnormal-shape fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] A method for preparing double shaped fibers, the specific steps are as follows:

[0089] (1) spinning melt preparation;

[0090] (1.1) Preparation of modified polyester:

[0091] (a) Esterification reaction: terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol in a molar ratio of 1:1.2:0.03 are made into a slurry, and antimony trioxide is added , titanium dioxide and triphenyl phosphate are mixed evenly, and the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressurized pressure is normal pressure, and the temperature of the esterification reaction is 250°C. 90% of the value is the end point of the esterification reaction, wherein the addition of antimony trioxide is 0.01% of the weight of terephthalic acid, the addition of titanium dioxide is 0.20% of the weight of terephthalic acid, and the addition of triphenyl phosphate 0.05% of the weight of terephthalic acid, wherein the structural formula of 2-ethyl-2-meth...

Embodiment 2

[0100] A method for preparing double shaped fibers, the specific steps are as follows:

[0101](1) spinning melt preparation;

[0102] (1.1) Preparation of modified polyester:

[0103] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2,2-diethyl-1,3-propanediol in a molar ratio of 1:1.3:0.04 into a slurry, add ethylene glycol antimony, titanium dioxide After mixing evenly with trimethyl phosphate, carry out the esterification reaction under pressure in a nitrogen atmosphere. The pressurized pressure is normal pressure, and the temperature of the esterification reaction is 260°C. 91% is the end point of the esterification reaction, wherein the addition of ethylene glycol antimony is 0.02% of the weight of terephthalic acid, the addition of titanium dioxide is 0.21% of the weight of terephthalic acid, and the addition of trimethyl phosphate is 0.02% of the weight of terephthalic acid. 0.03% by weight of phthalic acid, wherein the structural formula o...

Embodiment 3

[0112] A method for preparing double shaped fibers, the specific steps are as follows:

[0113] (1) spinning melt preparation;

[0114] (1.1) Preparation of modified polyester:

[0115] (a) Esterification reaction: terephthalic acid, ethylene glycol, and 2-butyl-2-ethyl-1,3-propanediol in a molar ratio of 1:1.4:0.05 are made into a slurry, and antimony acetate and titanium dioxide are added After mixing evenly with trimethyl phosphite, carry out esterification reaction under pressure in a nitrogen atmosphere. 92% is the end point of the esterification reaction, wherein the addition of antimony acetate is 0.03% of the weight of terephthalic acid, the addition of titanium dioxide is 0.23% of the weight of terephthalic acid, and the addition of trimethyl phosphite is 0.03% of the weight of terephthalic acid. 0.01% by weight of phthalic acid, wherein the structural formula of 2-butyl-2-ethyl-1,3-propanediol is as follows:

[0116]

[0117] (b) polycondensation reaction; afte...

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Abstract

The invention relates to double-abnormal-shape fibers and a preparation method thereof. A spinning melt is subjected to metering, composite spinneret plate extrusion, cooling, oiling, stretching, heatsetting and winding to obtain the double-abnormal-shape fibers; a bunch of the prepared double-abnormal-shape fibers contain a two-barred cross monofilament and a round monofilament at the same time;the fibers are made of modified polyester, and a matte agent is dispersed in the modified polyester; a molecular chain of the modified polyester consists of a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment with a branched chain, and diol with the branched chain has the following structural formula defined in the specification, wherein R1 and R2 are independently selected from straight-chain alkylene with the carbon atom number of 1-3, R3 is selected from alkyl with the carbon atom number of 1-5, and R4 is selected from alkyl with the carbon atom number of 2-5; the matte agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and amorphous silicon dioxide. The method is simple and reasonable, and the prepared fibers have stiff and smooth performance and softness.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a double-shaped fiber and a preparation method thereof. Background technique [0002] With the development of modern textile technology and the continuous improvement of people's living standards, people put forward higher requirements for the output, performance and quality of chemical fibers used in clothing, decorative and industrial textiles. Therefore, in recent years, researchers have devoted themselves to chemical Research and development of new varieties of fibers to meet people's market demand for fibers with high added value. [0003] The softness of textile materials is mostly manifested as having a comfortable touch, smooth surface and low bending resistance, and the crispness is mostly manifested as good touch elasticity and strong backwashing force, and the general recovery performance of stiff fibers It is good and has high bending resistance. Stiffness is the basic...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/86D06M13/11D06M13/224D06M15/53D06M13/02D06M13/292D06M13/256D01D5/253D01D5/30D06M101/32
CPCD01D5/253D01D5/30D01F1/10D01F6/92D06M13/02D06M13/11D06M13/224D06M13/256D06M13/292D06M15/53C08G63/183C08G63/866D06M2101/32D01D5/082D01F6/84C08G63/85
Inventor 范红卫汤方明尹立新王山水
Owner JIANGSU HENGLI CHEM FIBER
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