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

Simple preparation method of graphene sheet nano composite material

A technology of nanocomposite materials and graphene flakes, applied in the direction of graphene, nanotechnology for materials and surface science, nanocarbon, etc., to achieve the effect of large output, low cost and simple process

Inactive Publication Date: 2013-02-27
BEIJING UNIV OF CHEM TECH
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No reports at home and abroad

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
  • Simple preparation method of graphene sheet nano composite material
  • Simple preparation method of graphene sheet nano composite material
  • Simple preparation method of graphene sheet nano composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 1g of intercalated graphite into the preheated crucible, transfer the crucible containing the sample to a furnace at 700°C and heat it for 60s, transfer the obtained expanded product to a metal container containing 100ml of acetone, and first stir it mechanically 10 minutes, followed by ultrasonic dispersion for 1 hour in an ultrasonic cleaner (200W, 42kHz). The graphene flakes were separated from the acetone solution by centrifugation, and dried to constant weight in a blast oven and a vacuum oven successively.

[0026] Mix the 5g graphene flakes obtained above, 100g EPDM rubber, 4gDCP, 1g sulfur, and 1g HVA-2 (N,N'-m-phenylene bismaleimide) on a double-roller mill The mixed rubber is obtained, and the mixed rubber is molded and vulcanized at 150° C. to prepare a graphene EPDM composite material. The thermal conductivity and mechanical properties of the composite materials are shown in Table 1.

Embodiment 2

[0028] The difference from Example 1 is that the amount of graphene flakes is 10g, and all the other process conditions and operating steps are the same as in Example 1. The thermal conductivity and mechanical properties of the composite materials are shown in Table 1.

Embodiment 3

[0030] The difference from Example 1 is that the amount of graphene flakes is 20g, and all the other process conditions and operating steps are the same as in Example 1. The thermal conductivity and mechanical properties of the composite materials are shown in Table 1.

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a simple and efficient preparation method of a graphene sheet nano composite material. Industrial intercalated graphite is used as a raw material to prepare a graphene sheet with 3-4 graphene single sheets, thickness of 2-4 nm and oxygen content of only 7% through thermal expansion, ultrasonic dispersion and centrifugal drying; and the graphene sheet is then subjected to melt blending with a rubber matrix to prepare an elastic nano composite material with uniformly dispersed graphene sheets. On the premise of stable enhancement on mechanical properties of the composite material, the electric conduction and thermal conductivity of the composite material are also remarkably enhanced. According to the invention, intercalated graphite is used as a main raw material to substitute commonly used chemically synthesized graphite oxide; the method has simple process, high yield and low cost, can produce graphene nano composite material directly through melt blending, and can be applied to industrial production.

Description

technical field [0001] The invention relates to a simple preparation method of graphene flake nanocomposite material, in particular to a method with less environmental pollution, simple process, large output and low cost, which can be well applied in industrial production. Background technique [0002] Looking at all engineering materials in the past forty years, polymers have experienced the fastest development in industrial applications due to their high strength and low industrial manufacturing costs and carbon emissions. However, most polymers have low electrical and thermal conductivity, which greatly limits their applications. In order to overcome these shortcomings, nanocomposites have been prepared by blending functional nanoparticles with polymers, whose properties are significantly enhanced compared to traditional filler-filled composites. Today, graphene, a flat material only a single sheet of carbon atoms thick, is the most attractive nanofiller. Graphene exhib...

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): C08L23/16C08L9/06C08K3/04C01B31/04B82Y30/00C01B32/19
Inventor 张立群左康华马军刘力
Owner BEIJING UNIV OF CHEM 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