Production method of polyimide color silk

A polyimide, production method technology, applied in the directions of single-component synthetic polymer rayon, adding pigments in spinning solution, chemical characteristics of fibers, etc., can solve the problems of limited application, difficult to dye, difficult to dye, etc., Achieve the effect of high color fastness, low production cost and simple process

Active Publication Date: 2016-07-20
JIANGSU AOSHEN HI TECH MATERIALS CO LTD
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyimide fiber is widely used in high-temperature filtration, high-temperature heat insulation, electrical insulation and other industrial applications due to its excellent heat resistance, but at the same time, due to its inherent golden yellow or dark brown color, it is not easy to dye. It limits its application in high temperature protection and clothing fields,

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Embodiment 1, a production method of polyimide colored yarn, the steps are as follows:

[0023] (1) Preparation of color paste: add 50 parts of N,N-dimethylacetamide solvent to the blending kettle according to the weight ratio, add 1 part of dispersant, stir for 1h; add 10 parts of pigment, grind and disperse for 8h ;

[0024] (2) Preparation of spinning slurry: add diamine monomer A and 4,4'-diaminodiphenyl ether (ODA) to an appropriate amount of N,N-dimethylacetamide (DMAC) solvent at a certain molar ratio Add a certain amount of dianhydride monomer B at -5°C, and react for 2 hours to control the viscosity of the stock solution to 100 poise. Start the stock solution circulation pipeline outside the kettle and start the stock solution circulation pipeline at the entrance of the static mixer. Add an appropriate amount of color paste at a rate of 300g / min, continue the reaction for 1h, and finally add the dianhydride monomer pyromellitic dianhydride (PMDA), stir and polymeri...

Example Embodiment

[0027] Embodiment 2, a production method of polyimide colored yarn, the steps are as follows:

[0028] (1) Preparation of color paste: take 90 parts of N,N-dimethylacetamide solvent according to the weight ratio and add it to the blending kettle, add 15 parts of dispersant, stir for 3h; add 40 parts of pigment, grind and disperse for 16h ;

[0029] (2) Preparation of spinning slurry: add diamine monomer A and 4,4'-diaminodiphenyl ether (ODA) to an appropriate amount of N,N-dimethylacetamide (DMAC) solvent at a certain molar ratio Add a certain amount of dianhydride monomer B at 20°C and react for 2 hours to control the viscosity of the stock solution to 1000 poise, start the stock solution circulation pipeline circulation pump outside the kettle, and add 1500g at the entrance of the static mixer in the stock solution circulation pipeline. Add an appropriate amount of color paste at a rate of / min, continue the reaction for 1 hour, and finally add the dianhydride monomer pyromellit...

Example Embodiment

[0032] Embodiment 3, a production method of polyimide colored yarn, the steps are as follows:

[0033] (1) Preparation of color paste: take 75 parts of N,N-dimethylacetamide solvent by weight and add it to the blending kettle, add 10 parts of dispersant, stir for 2h; add 25 parts of pigment, grind and disperse for 12h ;

[0034] (2) Preparation of spinning slurry: add diamine monomer A and 4,4'-diaminodiphenyl ether (ODA) to an appropriate amount of N,N-dimethylacetamide (DMAC) solvent at a certain molar ratio Add a certain amount of dianhydride monomer B at 10℃ for 2 hours to control the viscosity of the stock solution to 500 poise, start the circulation pump of the stock solution circulation pipeline outside the kettle, and add 1000g at the entrance of the static mixer in the stock solution circulation pipeline. Add an appropriate amount of color paste at a rate of / min, continue the reaction for 1h, and finally add the dianhydride monomer pyromellitic dianhydride (PMDA), stir a...

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
Strengthaaaaaaaaaa
Finenessaaaaaaaaaa
Strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a production method of polyimide colored silk. The production method comprises the following steps: (1) blending color paste; (2) synthesizing light-color polyimide; (3) preparing newly spun silk with the polyamic acid under dry spinning technological conditions; (4) preparing colored polyimide fibers from the newly spun silk through cyclizing and drafting. The invention states a production technology for producing the polyimide color silk under dry-method technological skills. The production technology disclosed by the invention adopts dope dyeing, compared with a dyeing technology, the dope dyeing has the advantage of high color fastness, and besides, the method is simple in technology and low in production cost; influence on environment is small, and waste water, waste gas and the like are hardly generated; the produced polyimide color silk can be used for protective clothes of different purposes such as military and civil uses.

Description

technical field [0001] The invention relates to a production method of polyimide colored yarn, in particular to a method for producing polyimide colored yarn under a dry spinning process, and belongs to the technical field of producing differentiated fibers. Background technique [0002] Polyimide fiber is widely used in high-temperature filtration, high-temperature heat insulation, electrical insulation and other industrial applications due to its excellent heat resistance, but at the same time, due to its inherent golden yellow or dark brown color, it is not easy to dye. Its application in high temperature protection and clothing fields is limited, so the development of polyimide colored yarn is particularly important for expanding its application range. [0003] Most aromatic polyimides are golden yellow or dark brown due to the existence of highly conjugated structures and / or the formation of charge transfer complexes between molecules, which make them strongly absorb in...

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
IPC IPC(8): D01F6/78D01F6/74D01F1/04C08G73/10
CPCC08G73/1071D01F1/04D01F6/74D01F6/78
Inventor 王士华郭涛苗岭陈斌仲明明王瑾张清华陶明东关佃波王庆龙陆飞
Owner JIANGSU AOSHEN HI TECH MATERIALS CO LTD
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