Polyester-polyamide copolymer fiber and manufacturing method thereof

A polyamide copolymer, a technology for a manufacturing method, applied in the directions of single-component synthetic polymer rayon, fiber processing, fiber chemical characteristics, etc., can solve the problems of high cost, difficult industrialization, complicated process, etc., and achieve anti-pilling performance. Good, not easy to chromatic aberration, the effect of uniform sequence distribution

Active Publication Date: 2012-11-21
CHINESE TEXTILE ACAD
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is more cumbersome and costly, and it is not easy to be industrialized.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyester-polyamide copolymer fiber and manufacturing method thereof
  • Polyester-polyamide copolymer fiber and manufacturing method thereof
  • Polyester-polyamide copolymer fiber and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] 1) Preparation of polyester-polyamide copolymer

[0092] Mix 800g of dimethyl terephthalate (DMT) with 521g of ethylene glycol, 30g of propylene glycol, and 0.27g of tetrabutyl titanate evenly, then add it to the reaction kettle, raise the temperature to 200°C, and carry out the reaction for 60 minutes. 99% of the amount, the end of the transesterification reaction. Then add 0.43g of tetrabutyl titanate polycondensation catalyst, after heating up to 230°C, add 115g of nylon 6 intermediate polymer with a relative viscosity of 2.0, then heat up to 240°C, vacuumize to 50Pa, continue to heat up to 260°C, and the reaction proceeds for 4 hours, when the intrinsic viscosity of the polyester in the kettle is 0.82dL / g, the material is discharged to prepare a polyester-polyamide chip with a melting point of 220-252°C, which contains a mass of polyamide 12%;

[0093] 2) Pretreatment

[0094] The polyester-polyamide chips obtained in step 1) were pre-crystallized in vacuum at 80...

Embodiment 2

[0099] 1) Preparation of polyester-polyamide copolymer copolymer

[0100] Mix 800g of dimethyl terephthalate (DMT) with 521g of ethylene glycol, 35g of butanediol, and 0.22g of tetrabutyl titanate evenly, then add them to the reaction kettle, raise the temperature to 160°C, and carry out the reaction for 60 minutes. When reaching 98% of the theoretical amount, the transesterification reaction was terminated. Then add 0.4g tetrabutyl titanate polycondensation catalyst, heat up to 230°C, then add 68g of nylon 6 intermediate with a relative viscosity of 1.8, then heat up to 245°C, vacuumize to 50Pa, continue to heat up to 260°C, and the reaction proceeds for 5 hours, when the intrinsic viscosity of the polyester in the kettle is 0.85dL / g, the material is discharged to prepare a polyester-polyamide chip with a melting point of 210-220°C, which contains a mass of polyamide 5%;

[0101] 2) Pretreatment

[0102] The polyester-polyamide chips obtained in step 1) were pre-crystalliz...

Embodiment 3

[0107] 1) Preparation of polyester-polyamide copolymer

[0108] Add 800g of dimethyl terephthalate and 521g of ethylene glycol, 15g of propylene glycol and 25g of butanediol into the reaction kettle, then add 0.12g of tetrabutyl titanate as a catalyst to carry out transesterification reaction at 220°C, the reaction time For 40 minutes, when the fraction reaches 98% of the theoretical amount, the transesterification reaction is terminated, and 0.25 g of tetrabutyl titanate polycondensation catalyst is added to the transesterification reaction product, and then the temperature is raised to 230 ° C, and 63.4 g of tetrabutyl titanate polycondensation catalyst with a relative viscosity of 1.5 The nylon 6 polymer is subjected to a copolymerization reaction. When the temperature reaches 240°C, a high vacuum is applied to keep the vacuum at 30Pa, and the temperature is continued to rise to 255°C, and the reaction is carried out for 5 hours. When the intrinsic viscosity reaches 0.85dL / g...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
lengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a polyester-polyamide copolymer fiber and a manufacturing method thereof. In the polyester-polyamide copolymer fiber, the fiber number is 0.5 to 6 dtex, preferably, 1.0 to 5.0 dtex; the breaking strength is 1.0 to 6.0 cN / dtex; the breaking elongation rate is 5.0 to 400.0 percent; the fiber modulus is 20 to 60 cN / dtex; the dyeing rate of acidic dye under normal pressure isover 80 percent; the dyeing rate of disperse dye under normal temperature and normal pressure is over 90 percent; the dye fastness is more than or equal to the fourth level; and the pilling resistance is more than or equal to the third level. The fiber is obtained by melt spinning a polyester-polyamide copolymer comprising the following structure units, wherein m1 is more than 1 and less than 160, preferably, m1 is more than 10 and less than 100; m2 is more than 1 and less than 70, preferably, m2 is more than 10 and less than 30; m3 is more than or equal to 0 and less than 20, preferably, m3 is more than or equal to 0 and less than 10; and m4 is more than or equal to 0 and less than 20, preferably, m4 is more than or equal to 0 and less than 10.

Description

technical field [0001] The invention relates to a polyester-polyamide copolymer fiber and a manufacturing method thereof. Background technique [0002] Polyester fiber has been widely used due to its good properties, but due to its lack of dyeing groups, it is difficult to achieve normal pressure dyeing. In recent years, my country's chemical fiber output has developed rapidly, among which the output of polyester ranks first in the world, and the production capacity is still developing at a high speed. At present, more and more polyester fibers are used for blending with natural protein fibers such as wool to prepare worsted fabrics. However, natural protein fibers such as wool and real silk are dyed with acid dyes with low price, complete color spectrum and bright color. If ordinary polyester fiber is blended with wool, silk, etc., it cannot be dyed in the same bath. In order to solve this problem, many scholars and experts at home and abroad have conducted in-depth rese...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/82C08G69/44C08G69/46D01D5/08D01D5/084D01D5/12D01D10/00
Inventor 吴鹏飞崔华帅刘伯林黄庆崔宁李杰史贤宁
Owner CHINESE TEXTILE ACAD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap