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Heat-conducting and electricity-conducting modified plastic material and preparation method

A plastic material and modification technology, which is applied in the field of thermally conductive and electrically modified plastic materials and its preparation, can solve the problems of low brittleness, easy corrosion, and high cost

Inactive Publication Date: 2012-07-18
倪平 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 1. The existing heat conduction, heat dissipation, heat exchange and other materials are mostly made of metal or metal-containing materials, and most of them are not resistant to oxidation, easy to corrode, short life, high cost and complicated preparation process.
[0003] 2. At present, there are some non-metallic heat conduction and heat exchange materials, most of which are blends of polyolefin materials and graphite. The disadvantages are: low brittleness is easy to occur below minus 5 degrees, and the produced products are prone to breakage during winter transportation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Take out 40 parts of polypropylene homopolymer, 20 parts of SBS, and 35 parts of flake graphite 1500 mesh, and put them into the banburying equipment for high-speed stirring. When the temperature rises above 70 degrees, add 2 parts of titanate coupling agent, three parts 2 parts of polyphenol and 1 part of hindered amine. When the temperature rises to 90-100 degrees, take it out and put it into a twin-screw granulator to make a successful masterbatch. Radiators and pipes made of this material... Below 35 degrees, it has good low temperature stability.

example 2

[0020] Take out 35 parts of random copolymerized polypropylene, 15 parts of SEBS, 20 parts of expanded graphite 200 mesh, 26 parts of flake graphite 2000 mesh, put them into the banburying equipment and stir at high speed, when the temperature rises above 70 degrees, add titanium 1.5 parts of ester coupling agent, 1.5 parts of quaternary phenol, and 1 part of benzophenone. When the temperature rises to 90-100 degrees after being fully stirred, take out the stirred materials and put them into a twin-screw granulator to produce a successful Masterbatch, radiators and pipes made of this material have good stability below minus 25 degrees.

example 3

[0022] Take out 45 parts of random copolymerized polypropylene, 6 parts of SEBS, 45 parts of flake graphite 2000 mesh, put them into the banburying equipment and stir at high speed, when the temperature rises above 70 degrees, add 2 parts of titanate coupling agent, 1 part of quaternary phenol and 1 part of hindered amine. When the temperature rises to 90-100 degrees after being fully stirred, take out the stirred material and put it into a twin-screw granulator to make a successful masterbatch. The heat sink made of this material Devices, pipelines... have good stability below minus 15 degrees.

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Abstract

The invention relates to a modified plastic material and a preparation method. The material is prepared by polypropylene, styrene thermoplastic elastomer, high-carbon expanded graphite (or flake graphite), titanate coupling agent, antioxidant and photostabilizer through the enclosed mixing granulation process step, and the material has the characteristics of electricity conduction, heat conduction, resistance to acid and base corrosion, low temperature resistance and the like.

Description

1. Technical field [0001] The present invention is used in the field of heat conduction, heat exchange, heat dissipation and antistatic and other modified plastic materials and its preparation method 2. Background technology [0002] 1. Most of the existing materials for heat conduction, heat dissipation, and heat exchange are made of metal or metal-containing materials. Most of them have disadvantages such as non-oxidation resistance, easy corrosion, short life, high cost, and complicated preparation process. [0003] 2. At present, there are some non-metallic heat conduction and heat exchange materials, most of which are blends of polyolefin materials and graphite. The disadvantages are: low brittleness is easy to occur below minus 5 degrees, and the produced products are prone to breakage during winter transportation. 3. Contents of the invention [0004] The purpose of the invention is to use modified plastic materials to overcome all the insurmountable shortcomings of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L53/02C08K13/04C08K7/24C08K7/00F28D1/00
Inventor 倪平高玉亮
Owner 倪平