Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Aramid fiber surface modification method

A technology for surface modification of aramid fibers, applied in fiber types, fiber treatment, textiles and papermaking, etc., can solve the problems of surface inertia of aramid fibers and poor bonding of resin matrix, so as to improve surface inertia and reduce modification costs , Improve the effect of roughness

Active Publication Date: 2015-10-28
HARBIN INST OF TECH
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem of inert surface of aramid fibers and poor bonding with resin matrix, and provides a method for modifying the surface of aramid fibers

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
  • Aramid fiber surface modification method
  • Aramid fiber surface modification method
  • Aramid fiber surface modification method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Specific implementation mode one: a method for modifying the surface of aramid fibers in the present implementation mode is specifically carried out according to the following steps:

[0019] 1. Put the aramid fiber bundle into the extraction device, extract it with acetone for 16-48 hours, and then dry it in an oven at a temperature of 60-80°C for 1-3 hours to obtain the aramid fiber after desizing treatment;

[0020] 2. Add the acyl chloride reagent and the aramid fibers processed in step 1 to the glass reactor, close the reactor, and then place 60 Carry out γ-ray irradiation treatment under the Co irradiation source; then take out the aramid fiber, put it into the extraction device, and extract it with N,N-dimethylformamide for 2 to 4 hours; then put it into an oven with a temperature of 150°C Medium drying for 1 to 3 hours;

[0021] 3. Immerse the aramid fibers treated in step 2 in the grafting reagent, react at room temperature and pressure for 0.1-3 hours; then r...

specific Embodiment approach 2

[0022] Specific embodiment two: the difference between this embodiment and specific embodiment one is: adopt acetone to extract 24h in step one. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0023] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the acyl chloride reagent in step two is thionyl chloride, oxalyl chloride, sulfuryl chloride, isophthaloyl dichloride, terephthaloyl dichloride, propane One or more of diacid chloride, succinoyl chloride, glutaryl chloride and adipoyl chloride are mixed in any ratio. Others are the same as in the first or second embodiment.

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
Shear strengthaaaaaaaaaa
Shear strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of aramid fiber modification and relates to an aramid fiber surface modification method. The method aims to solve the technical problem that the surface of aramid fiber is inactive, and therefore combinability with a resin matrix is poor. The method comprises the steps of 1, desizing and drying of aramid fiber; 2, acylating chlorination of the surface of fiber; 3, grafting reaction of the surface of fiber. According to the method, the price of a grafting agent is low, and modification cost can be effectively reduced; technology is simple and efficient, and the method is suitable for large-scale industrial production. The method is used for aramid fiber surface modification.

Description

technical field [0001] The invention belongs to the field of aramid fiber modification and relates to a method for modifying the surface of aramid fiber. Background technique [0002] Aramid fiber refers to "a synthetic linear polymer composed of aromatics linked by amide bonds. More than 85% of its amide bonds are directly combined with two aromatic grades, and less than 50% of the amide bonds are imide Key Replacer". Since the molecular chains of aramid fibers contain a large number of benzene rings and amide bonds, the molecular chains are flat, rigid and straight, and there is no amorphous region in the molecule, which makes the fibers have high orientation and high crystallinity, so that the aramid fiber Fiber has many advantages such as high strength and high modulus, low density, high specific hardness, high specific strength, corrosion resistance, wear resistance, good thermal stability, strong toughness and creep resistance, etc., and is widely used as a base mater...

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): D06M10/08D06M13/268D06M13/332D06M101/36
Inventor 刘丽谭磊黎俊黄玉东谢非
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com