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A kind of modified polytetrafluoroethylene resin

A technology of polytetrafluoroethylene and resin, which is applied in the field of modified polytetrafluoroethylene resin, can solve problems such as insufficient linear expansion coefficient, and achieve the effects of excellent wear resistance, low linear expansion coefficient and high mechanical strength

Active Publication Date: 2020-01-07
GUIYANG BUREAU OF CHINA SOUTHERN POWER GRID CO LTD EHV TRANSMISSION CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the reinforcing agents for PTFE substrates are glass fiber, graphite, carbon fiber, carbon powder, polyphenylene ester, polyimide, molybdenum disulfide, ceramic powder, p-polyphenylene, bronze powder, stainless steel powder, etc. To improve mechanical strength, wear resistance, etc., but the linear expansion coefficient is still insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The modified polytetrafluoroethylene resin in this example is prepared from the following raw materials in parts by weight: 0.79 parts of polytetrafluoroethylene, 0.1 part of glass fiber, 0.1 part of polyimide, and 0.01 part of fluorinated graphene. The average coefficient of linear expansion of this modified PTFE at 40-60°C is 5×10 -5 / °C.

Embodiment 2

[0017] The modified polytetrafluoroethylene resin in this example is prepared from the following raw materials in parts by weight: 0.89 parts of polytetrafluoroethylene, 0.1 part of glass fiber, and 0.01 part of fluorinated graphene. The average coefficient of linear expansion of this modified PTFE resin at 40-60°C is 2×10 -5 / °C.

Embodiment 3

[0019] The modified polytetrafluoroethylene resin in this embodiment is prepared from the following raw materials in parts by weight: 0.99 parts of polytetrafluoroethylene and 0.01 part of fluorinated graphene. The average coefficient of linear expansion of this modified PTFE resin at 40-60°C is 8×10 -5 / °C.

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PUM

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Abstract

The invention discloses modified polytetrafluoroethylene resin. The modified polytetrafluoroethylene resin is prepared from the following raw materials in parts by weight: 0.79 to 0.99 part of polytetrafluoroethylene, 0 to 0.1 part of glass fiber, 0 to 0.1 part of polyimide, and 0.01 part of fluorinated graphene. The modified polytetrafluoroethylene resin has strong electrical insulating property, low linear expansion coefficient, high mechanical strength and excellent abrasive resistance. The average linear expansion coefficient thereof at the temperature of 40 to 60 DEG C is reduced to 10-5 / DEG C magnitude.

Description

technical field [0001] The invention relates to the field of plastics, in particular to a modified polytetrafluoroethylene resin that can be used in the electric power industry. Background technique [0002] PTFE has many excellent properties as rods, plates, pipes, wires, etc., such as high temperature resistance, corrosion resistance, strong electrical insulation, etc., and has been widely used in special occasions such as high electric fields and high magnetic fields in high-voltage transmission systems , such as water pipes for internal cooling water and fasteners for fixing equipment. However, polytetrafluoroethylene materials also have shortcomings such as low mechanical strength, large linear expansion coefficient, and poor wear resistance, especially the large linear expansion coefficient can easily lead to deformation of objects based on polytetrafluoroethylene. The average linear expansion coefficient of polytetrafluoroethylene at 40-60°C is about 40×10-5 / °C (the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08L79/08C08K7/14C08K9/00C08K3/04
CPCC08K3/04C08K7/14C08K9/00C08L27/18C08L2203/20C08L79/08
Inventor 李道豫邱志远冯文昕李学武刘浩周培吴才庆陈文燕钟科王春王圣平王荣华
Owner GUIYANG BUREAU OF CHINA SOUTHERN POWER GRID CO LTD EHV TRANSMISSION CO