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A kind of modified polyester amide short fiber and preparation method thereof

A technology of polyamide ester and short fiber, which is applied in the field of modified polyamide ester short fiber and its preparation, can solve the problem of increasing chip feeding, pre-crystallization, melting process of drying screw extruder, material consumption, utility consumption and labor cost Increase and increase the problems of copolymer casting tape, dicing, packaging, etc., to achieve the effect of being beneficial to product quality, stable control, and production operation

Active Publication Date: 2016-09-14
SINOPEC YIZHENG CHEM FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the compatibility of polyamide and polyester is not good, and the polyamide ester copolymer obtained by conventional technology and composition has poor stability
At the same time, in the preparation of polyamide ester copolymer fibers by melt indirect spinning, pre-crystallization and drying pretreatment are required for the slices before spinning. Because the crystallization performance of polyamide ester copolymers decreases, pre-crystallization and drying are difficult, which affects spinning production capacity and production stability
In addition, indirect melt spinning increases copolymer casting, pelletizing, and packaging processes, and spinning increases chip feeding, pre-crystallization, drying, and screw extruder melting processes, which increase material consumption, utility consumption, and labor costs, which affect the economic benefits of the product.

Method used

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  • A kind of modified polyester amide short fiber and preparation method thereof
  • A kind of modified polyester amide short fiber and preparation method thereof
  • A kind of modified polyester amide short fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: 100 parts of terephthalic acid, 60 parts of ethylene glycol, and 0.05 parts of antimony triacetate were put into a stainless steel reactor, the reaction temperature was controlled at 235°C, and the reaction pressure was 0.25 MPa, and the esterification reaction was carried out for 2 hours; after the reaction, the relative viscosity was put into 2.0 PA630 copies, 0.57 parts of L11, 0.38 parts of trimethyl phosphite, stirred for 10 minutes, then the temperature was set to 260°C, the pressure was gradually reduced to 50 Pa within 45 minutes, and the reaction was continued for 105 minutes to obtain the modified polyesteramide.

Embodiment 2

[0028] Example 2: 100 parts of terephthalic acid, 50 parts of ethylene glycol, and 0.05 parts of antimony triacetate were put into a stainless steel reactor, the reaction temperature was controlled at 265°C, and the reaction pressure was 0.2 MPa, and the esterification reaction was carried out for 2 hours; after the reaction, the relative viscosity was put into 2.1 PA1110 parts, DH201-4600.5 parts and stirred for 60 minutes, then the temperature was set to 265 ° C, the pressure was gradually reduced to 300 Pa within 50 minutes, and the reaction was continued for 95 minutes to obtain the modified polyesteramide.

Embodiment 3

[0029] Example 3: 100 parts of terephthalic acid, 60 parts of ethylene glycol, and 0.05 parts of antimony triacetate were put into a stainless steel reactor, the reaction temperature was controlled at 235°C, and the reaction pressure was 0.25 MPa, and the esterification reaction was carried out for 1 hour; after the reaction, the relative viscosity was put into 2.2 PA620 parts, 10.18 parts of H16, 0.09 parts of phosphorous acid, stirred for 10 minutes, then the temperature was set to 260 ° C, the pressure was gradually reduced to 50 Pa within 45 minutes, and the reaction was continued for 106 minutes to obtain the modified polyesteramide.

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PUM

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Abstract

The invention discloses modified polyesteramide short fiber and a preparation method thereof. The modified polyesteramide short fiber is obtained by directly performing spinning on modified polyesteramide, and the modified polyesteramide is obtained by performing polymerization on terephthalic acid, glycol, aliphatic polyamide, an additive A, an additive B and an additive C. According to the preparation method, the polyesteramide short fiber is produced from modified polyesteramide, a modified polyesteramide copolyester melt synthesized by a polymerization process enters a spinning apparatus melt channel under a certain pressure after passing the polyester-spinning interface point, and the melt passes through a booster pump and a filter and enters a spinning box for spinning. The technological flow is short, the production cost is low, and also the melt for continuous direct spinning is stable in quality, so that production operation and stable control on product quality are facilitated. The prepared modified polyesteramide short fiber has the breaking strength lower than that of same-specification PET polyester fiber by about 50%, has small fiber modulus, and is soft in handfeel and substantially improved in cloth comfortable degree.

Description

technical field [0001] The invention relates to a short fiber and a preparation method thereof, in particular to a modified polyester amide short fiber and a preparation method thereof. Background technique [0002] As the basic industry of the textile industry, chemical fiber has always been a key industry in my country's planned development. From January to September 2013, my country's chemical fiber output was 30.46 million tons, of which polyester fiber output was 23.91 million tons, accounting for 78.5%. Although some technologies and products of polyester fiber in my country have reached the international advanced level, they are also facing outstanding problems such as few high value-added functional varieties, low output, low quality, fierce homogenization competition, and low profit margins in the industry. Super imitation cotton technology represents the highest level of synthetic fiber development. The super imitation cotton fiber should not only preserve the ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/90D01F1/10D01D5/24D01D5/092D01D5/098C08G69/44
Inventor 陈培赵付平孙华平陈小红
Owner SINOPEC YIZHENG CHEM FIBER