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

Natural rubber/silicone rubber/alumina ternary thermally conductive composite material and preparation method thereof

A thermally conductive composite material and silicone rubber technology, applied in the rubber field, can solve problems such as unsatisfactory thermal conductivity, and achieve the effects of improving utilization efficiency, decreasing tensile strength, excellent aging resistance and adhesive properties

Active Publication Date: 2019-04-09
SOUTH CHINA UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Invention Patent 201010180632.2 After improving its technical scheme, adding 200 parts of alumina and 80 parts of magnesium oxide, its tensile strength dropped to 3.9mpa, but its thermal conductivity increased to 1.5w / m*k, two invention patents The elongation at break is only about 100%, and its thermal conductivity is not ideal

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
  • Natural rubber/silicone rubber/alumina ternary thermally conductive composite material and preparation method thereof
  • Natural rubber/silicone rubber/alumina ternary thermally conductive composite material and preparation method thereof
  • Natural rubber/silicone rubber/alumina ternary thermally conductive composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A high thermal conductivity natural rubber / silicone rubber / alumina ternary thermal conductivity composite material, its formula and preparation process are as follows:

[0038] The following formula is in parts by weight, 60 parts of natural rubber, 40 parts of silica gel, 180 parts of aluminum oxide, 2 parts of sulfur, 1 part of accelerator selection CZ, 4 parts of active agent zinc oxide, 0.8 parts of stearic acid, 1.5 parts of anti-aging agent, 2 parts of peroxide vulcanizing agent BIBP.

[0039] The preparation process is as follows: (1) Masterbatch: The masterbatch preparation process is carried out in an internal mixer with an initial temperature of 20° C. and a rotation speed of 40 rpm. The feeding order of natural rubber masterbatch is: natural rubber is added at the beginning, and sulfur, active agent, and accelerator are added in order after 2 minutes; the feeding order of silica gel masterbatch is: silicone rubber is added at the beginning, 1-2 minutes Then ...

Embodiment 2-4

[0043] A high thermal conductivity natural rubber / silicone rubber / alumina ternary thermal conductivity composite material, its formula and preparation process are as follows:

[0044] The following formula is in parts by weight: 50 parts of natural rubber, 50 parts of silica gel, 80-300 parts of aluminum oxide, 1 part of sulfur, 0.5 parts of accelerator TMTD, 3 parts of active agent zinc oxide, 0.5 parts of stearic acid, anti-aging agent 1.5 parts, peroxide curing agent BIBP1.5 parts.

[0045] The preparation process is as follows: (1) Masterbatch: The masterbatch preparation process is carried out in an internal mixer with an initial temperature of 40° C. and a rotational speed of 50 rpm. The feeding order of natural rubber masterbatch is: natural rubber is added at the beginning, and sulfur, active agent, and accelerator are added in order after 2 minutes; the feeding order of silica gel masterbatch is: silicone rubber is added at the beginning, 1-2 minutes Then add the per...

Embodiment 5-7

[0053] A high thermal conductivity natural rubber / silicone rubber / alumina ternary thermal conductivity composite material, its formula and preparation process are as follows:

[0054] The following formula is in parts by weight, 40 parts of natural rubber, 60 parts of silica gel, 220 parts of aluminum oxide, 1 part of sulfur, 1 part of accelerator selection NS, 3 parts of active agent zinc oxide, 1 part of stearic acid, 2 parts of anti-aging agent, over Oxide curing agent BIBP1.8 parts.

[0055] The preparation process is as follows: (1) Masterbatch: The masterbatch preparation process is carried out in an internal mixer with an initial temperature of 40° C. and a rotation speed of 50 rpm. The feeding order of natural rubber masterbatch is: natural rubber is added at the beginning, and sulfur, active agent, and accelerator are added in order after 2 minutes; the feeding order of silica gel masterbatch is: silicone rubber is added at the beginning, 1-2 minutes Then add the per...

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
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a natural rubber / silicone rubber / aluminum oxide ternary heat-conducting composite and a preparation method thereof. A formula of the composite contains the following components: natural rubber, silicone rubber, aluminum oxide, sulphur, an accelerator, an active agent, an anti-aging agent and a peroxide vulcanizing agent. During preparation, natural rubber masterbatch and silicone rubber masterbatch are prepared respectively firstly, and then final mixing and vulcanization are carried out; when the natural rubber masterbatch is prepared, the natural rubber is added initially, and then the sulphur, the active agent and the accelerator are respectively added in sequence; and when the silicone rubber masterbatch is prepared, the silicone rubber is added initially, and then the peroxide vulcanizing agent BIBP is added. The preparation method disclosed by the invention has the advantages that an appropriate mixing sequence is adopted, the utilization efficiency of heat-conducting filler is greatly improved, the problem that heat conducting property and mechanical properties or other properties of heat-conducting rubber cannot be considered at the same time under normal conditions is solved, and the composite disclosed by the invention is applicable to an occasion requiring higher heat-conducting property and mechanical properties.

Description

technical field [0001] The invention relates to a heat-conducting composite material, in particular to a natural rubber / silicone rubber / alumina ternary heat-conducting composite material and a preparation method thereof, belonging to the field of rubber. Background technique [0002] With the development of the information age, the miniaturization of various electronic components has become a trend, the operating frequency has also increased significantly, and the heat generated by it has also doubled, which makes the thermal conductivity of materials more important. Compared with metal materials, although the thermal conductivity of polymers is smaller, they also have unique advantages, such as light weight, high temperature resistance, corrosion resistance, etc., and the addition of thermally conductive fillers can significantly improve their thermal conductivity, so thermally conductive polymer materials also received more attention. [0003] Chinese invention patent 201...

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 Patents(China)
IPC IPC(8): C08L7/00C08L83/04C08K13/02C08K3/22C08K3/06C08K5/09C08K5/14C09K5/14B29B7/00B29C35/02
CPCB29B7/005B29C35/02C08K2003/2227C08K2003/2296C08L7/00C08L83/04C09K5/14C08K13/02C08K3/22C08K3/06C08K5/09C08K5/14
Inventor 丁剑平付伟伟刘运春陈晖
Owner SOUTH CHINA UNIV 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