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

Polymer-based electromagnetic shielding material based on carbon fiber and graphene and preparation method of polymer-based electromagnetic shielding material

An electromagnetic shielding material, graphene technology, applied in the field of polymer-based electromagnetic shielding materials and its preparation, can solve the problem that conductive carbon black and carbon fiber cannot form a transport network, the interface adhesion of composite materials is low, and it is difficult to make complex shapes Products and other issues, to achieve good electromagnetic shielding effect, low cost, prevent curl or wrinkle effect

Active Publication Date: 2015-03-18
HEFEI GENIUS NEW MATERIALS
View PDF6 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent application number 200910176507.1 reports the addition of conductive carbon black, metal magnetic powder and a small amount of carbon fiber to prepare ABS electromagnetic shielding materials. The amount of conductive filler is relatively large, and the added metal powder makes the interface of the composite material low in adhesion, high in cost and large in proportion. Difficult to make products with complex shapes
Chinese patent 201210001081.8 discloses ABS resin / conductive carbon black / pitch-based carbon fiber conductive composite material and its preparation method. It is mainly prepared by melt blending method. Conductive carbon black and carbon fiber cannot form an effective transport network, and its electrical properties will be affected to a certain extent. the limitations of

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
  • Polymer-based electromagnetic shielding material based on carbon fiber and graphene and preparation method of polymer-based electromagnetic shielding material
  • Polymer-based electromagnetic shielding material based on carbon fiber and graphene and preparation method of polymer-based electromagnetic shielding material
  • Polymer-based electromagnetic shielding material based on carbon fiber and graphene and preparation method of polymer-based electromagnetic shielding material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Add chopped carbon fibers into a mixed solution of concentrated sulfuric acid and concentrated nitric acid (volume ratio 3:1) at a mass ratio of 1:75, ultrasonically disperse for 2.5 hours, filter with suction, wash, and dry to obtain acidified carbon fibers.

[0033](2) Dissolve 1.5 parts of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate in 225 parts of dichloroethane to make a solution, add 15 parts of the above-mentioned acidified carbon fiber, 12 parts of graphene, and process under ultrasonic and stirred for 2 hours to obtain a suspension; 70 parts of ABS were dissolved in 700 parts of dichloroethane, added to the above suspension, treated with ultrasonic waves and stirred for 2 hours, and the resulting mixture was dried at 70°C for 16 hours to remove dichloro ethane to obtain a powder mixture.

[0034] (3) Mix the mixture powder obtained in step (2), 0.8 parts of antioxidant 1010, and 3 parts of ABS-g-MAH evenly, and then send them into a twin-screw e...

Embodiment 2

[0037] (1) Add chopped carbon fibers into a mixed solution of concentrated sulfuric acid and concentrated nitric acid (volume ratio 3:1) at a mass ratio of 1:75, ultrasonically disperse for 2.5 hours, filter with suction, wash, and dry to obtain acidified carbon fibers.

[0038] (2) Dissolve 1.5 parts of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate in 225 parts of dichloroethane to make a solution, add 12 parts of the above-mentioned acidified carbon fiber, 15 parts of graphene, and treat under ultrasonic and stirred for 2 hours to obtain a suspension; 70 parts of ABS were dissolved in 700 parts of dichloroethane, added to the above suspension, treated under ultrasonic waves and stirred for 2 hours, and the resulting mixture was dried at 70°C for 16 hours to remove dichloromethane. Chloroethane, the mixture powder was obtained.

[0039] (3) Mix the mixture powder obtained in step (2), 0.8 parts of antioxidant 1076, and 3 parts of ABS-g-MAH evenly, and then send them...

Embodiment 3

[0042] (1) Add chopped carbon fibers into a mixed solution of concentrated sulfuric acid and concentrated nitric acid (volume ratio 3:1) at a mass ratio of 1:75, ultrasonically disperse for 2.5 hours, filter with suction, wash, and dry to obtain acidified carbon fibers.

[0043] (2) Dissolve 1.5 parts of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate in 225 parts of dichloroethane to make a solution, add 20 parts of the above-mentioned acidified carbon fiber, 5 parts of graphene, and treat under ultrasonic and stirred for 2 hours to obtain a suspension; 70 parts of ABS were dissolved in 700 parts of dichloroethane, added to the above suspension, treated with ultrasonic waves and stirred for 2 hours, and the resulting mixture was dried at 70°C for 16 hours to remove dichloro ethane to obtain a powder mixture.

[0044] (3) Mix the mixture powder obtained in step (2), 0.8 parts of antioxidant 1098, 3 parts of ABS-g-MAH, and 5 parts of acrylonitrile-styrene-acrylate copol...

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

No PUM Login to View More

Abstract

The invention discloses a polymer-based electromagnetic shielding material based on carbon fiber and graphene and a preparation method of the polymer-based electromagnetic shielding material. The polymer-based electromagnetic shielding material is prepared by use of the following steps: firstly, acidizing the carbon fiber and performing ultrasonic dispersion on the acidized carbon fiber and the graphene in a solution containing a coupling agent to prepare an interpenetrating network structure; secondly, adding the solution of a polymer by use of a solvent mixing method and stirring and drying to obtain mixture powder; and finally, evenly mixing the mixture powder with an antioxidant, a compatilizer or other auxiliaries and then extruding and granulating by use of a twin-screw extruder. According to the polymer-based electromagnetic shielding material based on the carbon fiber and the graphene, an intertwined network structure of the carbon fiber and the graphene are kept inside the polymer so that an efficient power transmission and network can be formed in the matrix; the prepared electromagnetic shielding material has a good electromagnetic shielding effect, and also has the characteristic of good comprehensive mechanical properties and thermal conductivity. The polymer-based electromagnetic shielding material has the advantage of expanding the application of the carbon fiber and the graphene in the field of the electromagnetic shielding materials.

Description

technical field [0001] The invention belongs to the technical field of polymer processing and the field of nanotechnology, in particular to a polymer-based electromagnetic shielding material based on carbon fiber and graphene and a preparation method thereof. [0002] Background technique [0003] With the development of the electronics industry, various home appliances, office appliances, instruments and equipment and other electronic products have been widely popularized and applied, which brings convenience to people and also brings problems of electromagnetic radiation and interference, which seriously endanger people's health. It also interferes with the use of electronic devices. At present, most electronic and electrical equipment use polyacrylonitrile-butadiene-styrene (ABS) as the shell material. Since ABS generally has no shielding effect on electromagnetic waves, how to develop a Polymer-based electromagnetic shielding packaging materials with mechanical strengt...

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): C08L55/02C08K13/06C08K9/02C08K9/04C08K7/06C08K3/04
Inventor 杨桂生汪丽娟
Owner HEFEI GENIUS NEW MATERIALS
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