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Three-dimensional graphene modification-based plastic composite material and preparation thereof

A graphene modification and composite material technology, applied in the field of materials, can solve the problems of insufficient addition of conductive fillers, inability to meet the processing needs of high-end electrical equipment, and reduced mechanical properties, achieving low production costs and realizing large-scale industrial production. , the effect of no environmental pollution

Active Publication Date: 2017-01-25
GUANGDONG NANOLUTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the insufficient addition of conductive fillers, conventional composite conductive plastics cannot meet the processing needs of high-end electrical equipment, but adding a large amount of conductive fillers will cause a decrease in mechanical properties, which limits their large-scale use in precision electrical components

Method used

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  • Three-dimensional graphene modification-based plastic composite material and preparation thereof
  • Three-dimensional graphene modification-based plastic composite material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1) prepare graphene oxide by improved Hummers method, be divided into pre-oxidation, oxidation and exfoliation.

[0024] Pre-oxidation: the mass parts are 1 part of natural graphite, 3 parts of concentrated sulfuric acid, 0.5 part of K 2 S 2 o 8 and P 2 o 5 Mix and heat to 80°C, react for 6 hours, wash with ultrapure water until neutral to obtain pre-oxidized graphite.

[0025] Oxidation: At 0°C, mix pre-oxidized graphite with 6 parts of concentrated sulfuric acid, and gradually add 1 part of KMnO under stirring 4 , during which the temperature of the mixture is controlled below 20°C. The temperature of the mixture was raised to 35°C, and after stirring for 2 hours, 20 parts of ultrapure water was added, stirring was continued for 15 minutes, and finally 40 parts of ultrapure water was added to terminate the reaction. Next, add 2 parts of 30% H 2 o 2 , the mixture was centrifuged with 10% HCl to remove excess metal ions. The obtained precipitate was repeat...

Embodiment 2

[0030] Step 1) prepare graphene oxide by improved Hummers method, be divided into pre-oxidation, oxidation and exfoliation.

[0031] Pre-oxidation: the mass parts are 1 part of natural graphite, 4 parts of concentrated sulfuric acid, 0.6 part of K 2 S 2 o 8 and P 2 o 5 Mix and heat to 80°C, react for 6 hours, wash with ultrapure water until neutral to obtain pre-oxidized graphite.

[0032] Oxidation: At 0°C, mix pre-oxidized graphite with 7 parts of concentrated sulfuric acid, and gradually add 1.5 parts of KMnO under stirring 4 , during which the temperature of the mixture is controlled below 20°C. The temperature of the mixture was raised to 35°C, and after stirring for 2 hours, 25 parts of ultrapure water was added, stirring was continued for 15 minutes, and finally 50 parts of ultrapure water was added to terminate the reaction. Next, add 2 parts of 30% H 2 o 2 , the mixture was centrifuged with 10% HCl to remove excess metal ions. The obtained precipitate was rep...

Embodiment 3

[0037] Step 1) prepare graphene oxide by improved Hummers method, be divided into pre-oxidation, oxidation and exfoliation.

[0038] Pre-oxidation: the mass parts are 1 part of natural graphite, 5 parts of concentrated sulfuric acid, 0.7 part of K 2 S 2 o 8 and P2 o 5 Mix and heat to 80°C, react for 6 hours, wash with ultrapure water until neutral to obtain pre-oxidized graphite.

[0039] Oxidation: At 0°C, mix graphite oxide with 8 parts of concentrated sulfuric acid, and gradually add 2 parts of KMnO under stirring 4 , during which the temperature of the mixture is controlled below 20°C. The temperature of the mixture was raised to 35°C, and after stirring for 2 hours, 30 parts of ultrapure water was added, stirring was continued for 15 minutes, and finally 60 parts of ultrapure water was added to terminate the reaction. Next, add 2 parts of 30% H 2 o 2 , the mixture was centrifuged with 10% HCl to remove excess metal ions. The obtained precipitate was repeatedly cen...

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Abstract

The invention relates to the technical field of materials, and in particular disclosesa three-dimensional graphene modification-based plastic composite material. The three-dimensional graphene modification-based plastic composite material is prepared from 95 percent to 99.9 percent by weight of a plastic base material and 0.1 percent to 5 percent by weight of three-dimensional graphene. The three-dimensional graphene is a three-dimensional structure assembling body of a two-dimensional graphene sheet, has excellent electrical conductivity, heat conductivity and mechanical properties of graphene, also has unique properties, such as flexibility, porosity, highly active surface area and the like, and can tightly contact with abase material, so that the three-dimensional graphene can be uniformly distributed in the plastic base material, and the electrical conductivity, the heat conductivity and the mechanical properties of plastic products are enhanced.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a three-dimensional graphene-based modified plastic composite material and its preparation. Background technique [0002] With the development of industrial production and science and technology, people have higher and higher requirements for the comprehensive performance of thermal conductive materials. Traditional metals, ceramics and other materials can no longer meet the needs of some special occasions, such as those used in chemical production and wastewater treatment. Heat exchangers require materials with thermal conductivity and chemical corrosion resistance; high-power tubes are used in electronic circuits, and insulating heat dissipation devices are required at the bottom. In addition, non-ferrous metal resources are scarce, so it is necessary to develop a heat-conducting material that can replace metal aluminum and copper. Thermally conductive plastics have been wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L25/06C08L23/06C08L77/02C08L23/12C08L55/02C08L81/02C08K9/02C08K9/00C08K7/24C08K3/04B29C47/92B29C48/92
CPCC08L81/02B29C48/92C08K3/04C08K7/24C08K9/00C08K9/02C08L23/06C08L23/12C08L25/06C08L55/02C08L67/02C08L77/02B29C2948/92704
Inventor 段曦东赵涛楠毛志浩
Owner GUANGDONG NANOLUTION SCI & TECH CO LTD
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