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

Preparation method of heat-conducting silicone grease

A technology of thermal conductive silicone grease and silicone oil, which is applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problem of inertness on the surface of graphene agglomeration and graphene, and achieves compatibility and affinity improvement and reduction. Effect of contact thermal resistance and high thermal conductivity

Active Publication Date: 2016-07-06
JIANGNAN GRAPHENE RES INST
View PDF5 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method still cannot solve the problems of graphene agglomeration and graphene surface inertness.

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
  • Preparation method of heat-conducting silicone grease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 30 g of graphene oxide was added to an ethanol solution containing 0.3 g of KH-550 (concentration: 20 mg / mL), ultrasonically mixed for one hour, and dried by suction filtration. After the above-mentioned graphene oxide treated with the coupling agent was uniformly mixed with 500 g of simethicone oil, it was ground on a three-roll mill until there was no grainy feeling when observed with the naked eye, and the particle size did not exceed 100 μm. Put the mixture in an oven at 120°C, bake for 60 minutes, and then process it in a vacuum mixer for 30 minutes with a vacuum of -0.06mPa to obtain thermally conductive silicone grease.

Embodiment 2

[0025] 30 g of graphene oxide was added to an ethanol solution containing 0.5 g of KH-550 (concentration: 20 mg / mL), ultrasonically mixed for one hour, and dried by suction filtration. After the above-mentioned graphene oxide treated with the coupling agent is mixed with 500 g of silicone oil and amino silicone oil, it is ground on a three-roll mill until there is no grainy feeling when observed with the naked eye, and the particle size does not exceed 100 μm. Put the mixture in an oven at 200°C, bake for 100 minutes, and then process it in a vacuum mixer for 30 minutes with a vacuum of -0.099mPa to obtain thermally conductive silicone grease.

Embodiment 3

[0027] 50 g of graphene oxide was added to an ethanol solution containing 1 g of KH-550 (concentration: 20 mg / mL), ultrasonically mixed for one hour, and dried by suction filtration. After the graphene oxide treated with the above coupling agent was uniformly mixed with 500 g of dimethyl silicone oil, it was ground on a three-roll mill until there was no grainy feeling when observed with the naked eye, and the particle size did not exceed 100 μm. The mixture was placed in an oven at 300°C, baked for 180 minutes, and then processed in a vacuum mixer for 30 minutes with a vacuum degree of -0.079mPa to obtain thermally conductive silicone grease.

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 relates to the field of heat interface materials, and in particular relates to a preparation method of heat-conducting silicone grease. The preparation method comprises the following steps: (1) adding graphene oxide into an ethanol solution of a silane coupling agent, ultrasonically mixing for one hour, filtering by suction, and drying; (2) uniformly mixing silane coupling agent-modified graphene oxide and silicone oil to obtain a mixture, and grinding the mixture on a grinding machine; (3) placing the mixture into a drying oven, and processing the mixture at a high temperature; and (4) stirring in vacuum to obtain the heat-conducting silicone grease. Rich oxygen-containing groups in the graphene oxide are first combined with the coupling agent by virtue of chemical bonds, so that the processed graphene and the silicone oil have a good combined interface, the dispersity of the graphene in the silicone oil is facilitated, the compatibility and the affinity between the graphene and the silicone oil are improved, and the contact heat resistance between the graphene and the silicone oil is effectively reduced; and meanwhile, the graphene oxide is reduced by adopting a thermal reduction method, so that the heat conduction coefficient of the heat-conducting silicone grease is increased by utilizing the high heat-conduction capacity of the graphene.

Description

technical field [0001] The invention relates to the field of thermal interface materials, in particular to a preparation method of thermal conductive silicone grease. Background technique [0002] Thermally conductive silicone grease is commonly known as heat dissipation paste. Thermally conductive silicone grease uses organic silicone as the main raw material. It is a high thermal conductivity insulating silicone material that almost never solidifies and can be used for a long time at a temperature of -50°C to +230°C. Due to the high thermal conductivity of thermal conductive silicone grease, it can be used for heat conduction and heat dissipation of electronic components such as LEDs and CPU chips, so as to ensure the stable performance and service life of the devices. [0003] Graphene, a two-dimensional material with a thickness of only one carbon atom in a honeycomb lattice, has excellent mechanical, thermal, and electrical properties. Graphene has a very high thermal ...

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): C08L83/04C08L83/08C08K9/06C08K3/04C09K5/14
CPCC08K3/04C08K9/06C09K5/14C08L83/04C08L83/08
Inventor 李修兵李韦韦莫剑臣
Owner JIANGNAN GRAPHENE RES INST
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