Carbon fiber surface modified treatment method

A technology of surface modification and treatment method, which is applied in fiber treatment, carbon fiber, textiles and paper making, etc. It can solve the problems of carbon fiber surface damage and other problems, achieve the improvement of monofilament tensile strength, maintain flexibility and weavability, and solve the problem of interface Effects of Wetting and Compatibility Issues

Inactive Publication Date: 2016-12-07
郑州峰泰纳米材料有限公司
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problem of damage to the carbon fiber surface caused by the existing single method modification, the present invention proposes a carbon fiber surface modification treatment method, which improves the surface activity of the fiber and does not damage the fiber body

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

Embodiment 1

[0027] A carbon fiber surface modification treatment method, comprising the steps of:

[0028] 1) Immerse 6g of acrylonitrile carbon fiber in an organic solvent solution grafted with 10wt% maleic anhydride and heat it to 50°C for 5h, then dry it to obtain CF-1.

[0029] 2) Add CF-1 into 150ml of potassium permanganate sulfuric acid solution under vacuum condition of 100°C for oxidation etching treatment, after the treatment, naturally cool down to room temperature and wash with water until the pH is 6, then dry to obtain CF-2: The sulfuric acid solution of potassium permanganate is a solution prepared by adding 0.4 g of potassium permanganate to 50 ml of sulfuric acid with a molar concentration of 0.5 mol / L.

[0030] 3) Disperse CF-2 in ether, add lithium borohydride (0.05g lithium borohydride / gCF-2), stir at 10°C for 4h, then add 120ml of 1.5mol / L hydrochloric acid, stir and filter out carbon fiber, then soaked and washed in tetrahydrofuran for 24 hours, and dried to obtain ...

Embodiment 2

[0033] A carbon fiber surface modification treatment method, comprising the steps of:

[0034] 1) Immerse 5g of high-performance pitch-based carbon fiber in an acetone solution of 12wt% styrene-acrylonitrile-glycidyl methacrylate, heat it to 60°C for 2 hours, and dry it to obtain CF-1.

[0035] 2) Add CF-1 into the sulfuric acid solution of potassium permanganate under the vacuum condition of 120°C for oxidation etching treatment. After the treatment, naturally cool down to room temperature and wash with water until the pH is 8, then dry to obtain CF -2; The sulfuric acid solution of potassium permanganate refers to a solution prepared by adding 0.6 g of potassium permanganate to 55 ml of sulfuric acid with a molar concentration of 0.6 mol / L.

[0036] 3) Disperse CF-2 in ether, add lithium borohydride (the amount used is 0.07g lithium borohydride / gCF-2), stir at 20°C for 3.5h, then add 150ml of 2mol / L hydrochloric acid, stir and filter out carbon fiber , then soaked and washe...

Embodiment 3

[0039] A carbon fiber surface modification treatment method, comprising the steps of:

[0040] 1) Immerse 8g of acrylonitrile carbon fiber in an ethanol solution grafted with 15wt% maleic anhydride and heat it to 60°C for 2 hours, then dry it to obtain CF-1.

[0041] 2) Add CF-1 into the sulfuric acid solution of potassium permanganate under the vacuum condition of 150°C for oxidation etching treatment. After the treatment, naturally cool down to room temperature and wash with water until the pH is 7, then dry to obtain CF -2. The sulfuric acid solution of potassium permanganate refers to a solution prepared by adding 0.8 g of potassium permanganate to 60 ml of sulfuric acid with a molar concentration of 0.9 mol / L.

[0042] 3) Disperse CF-2 in ether, add lithium borohydride (0.1g lithium borohydride / gCF-2), stir at 30°C for 3h, then add 2.5mol / L hydrochloric acid 320ml, stir and filter out carbon fiber , then soaked and washed in tetrahydrofuran for 12 hours, and dried to ob...

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
tensile strengthaaaaaaaaaa
shear strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a carbon fiber surface modified treatment method. The method comprises the following steps that firstly, carbon fiber is steeped into a compatilizer solution, then, under the vacuum condition, a sulfuric acid solution of potassium permanganate is used for performing oxidation etching treatment on CF-1, after treatment is completed, natural cooling is performed to reach room temperature, washing is performed till pH is 6-8, drying is performed, CF-2 is obtained, then, lithium borohydride is used for reduction in diethyl ether, an alcohol-water solution of the silane coupling agent for the reduced CF-3 is subjected to treatment to obtain CF-4. According to the method, the surface activity of the fiber is improved, and meanwhile the fiber body is not damaged.

Description

technical field [0001] The invention belongs to the technical field of carbon fibers, and in particular relates to a method for modifying the surface of carbon fibers. Background technique [0002] Carbon fiber is a new generation of reinforcing fiber with the two characteristics of high tensile strength of carbon material and soft processability of fiber. It has both the electrical conductivity and thermal conductivity of metal materials, and the heat resistance and chemical resistance of ceramic materials. There are many advantages such as flexibility, softness and weaving of textile fibers. Its specific gravity is only 1 / 4 of steel, but its tensile strength can reach 7 to 9 times that of steel. Therefore, it has been widely used in many fields such as aerospace, automobile manufacturing, sports and leisure, and high-performance carbon fiber has become a new technology at home and abroad. Emphasis and hotspots of research in the field of materials. [0003] Carbon fiber ...

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 Applications(China)
IPC IPC(8): D06M15/263D06M15/31D06M11/50D06M11/80D06M11/13D06M13/50D06M13/513D06M101/40
CPCD06M15/263D06M11/13D06M11/50D06M11/80D06M13/50D06M13/513D06M15/31D06M2101/40
Inventor 李洋洋
Owner 郑州峰泰纳米材料有限公司
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