Mixed silicon rubber-based conductive nonlinear insulating material

A technology of mixing silicone rubber and non-linear insulation, which is applied to organic insulators, plastic/resin/wax insulators, etc., and can solve the problems of poor physical-mechanical properties and low breakdown strength

Inactive Publication Date: 2013-07-24
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low breakdown strength and poor physical-mechanical properties of existing silicone rubber-based conductance nonlin...

Method used

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Examples

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specific Embodiment approach 1

[0011] Specific implementation mode 1: In this embodiment, the mixed silicone rubber-based conductance nonlinear insulating material is mixed with 100 parts by weight of silicone rubber, 10-20 parts of nonlinear functional filler, 5-20 parts of fumed silica, 0.5 ~3 parts of nano-ferric oxide, 0.5-5 parts of diphenylsilanediol and 0.5-1.5 parts of organic peroxide, the nonlinear functional filler is made of nano-zinc oxide, nano-titanium dioxide, nano-silicon carbide, carbon nanotubes, Composition of conductive carbon black and nano-graphite;

[0012] Among them, the mixing silicone rubber is thermal vulcanization mixing type silicone rubber, the particle size of fumed white carbon black is 10nm-100nm, the particle size of nano-ferric oxide is 10nm-100nm, and the particle size of nano-zinc oxide is 10nm-100nm The particle size of nano-titanium dioxide is 10nm-100nm, the particle size of nano-silicon carbide is 10nm-100nm, and the carbon nanotube is single-armed carbon nanotube,...

specific Embodiment approach 2

[0014] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the organic peroxide is benzoyl peroxide, di-tert-butyl peroxide, dicumyl peroxide or 2,5-dimethyl-2 , 5-di-tert-butylperoxyhexane. Other parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the mixed silicone rubber-based conductance nonlinear insulating material is mixed by 100 parts by weight of silicone rubber, 12-18 parts of nonlinear functional filler, 5-20 parts It is made of 0.5-3 parts of fumed white carbon black, 0.5-3 parts of nanometer ferric oxide, 0.5-5 parts of diphenylsilanediol and 0.5-1.5 parts of organic peroxide. Other parameters are the same as in the first embodiment.

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Abstract

The invention discloses a mixed silicon rubber-based conductive nonlinear insulating material, relates to a rubber-based nonlinear dielectric material, and mainly solves the problems that the existing silicon rubber-based nonlinear dielectric material is low in breakdown strength and poor in physical-mechanical properties because a large amount of nonlinear functional filler is added. The nonlinear insulating material is made of a mixed silicon rubber, a nonlinear functional filler, white carbon black by gas phase method, nano-ferric oxide, diphenyl silanediol and organic peroxide, wherein the nonlinear functional filler consists of nano-zinc oxide, nano-silicon dioxide, nano-silicon carbide, a carbon nano-tube, conductive carbon black and nano-graphite. The prepared nonlinear insulating material has the advantages that the alternating-current breakdown strength is not smaller than 30kV/mm, the direct-current breakdown strength is not smaller than 60kV/mm, the maximum nonlinear coefficient is 6-18, the tensile strength is not smaller than 9.0MPa, and the breaking elongation is not smaller than 200%. The invention is mainly applicable to high-voltage composite insulating materials.

Description

technical field [0001] The invention relates to a rubber-based nonlinear dielectric material. Background technique [0002] Silicone rubber has the advantages of good electrical insulation performance, high and low temperature resistance, ozone aging resistance, oxygen aging, light aging, weather aging, good hydrophobicity, and combustion resistance, so it is widely used in the field of electrical insulation. Combining polymers, such as polyolefin, rubber, epoxy resin, etc., with some functional inorganic fillers can produce nonlinear insulating materials, because the electrical conductivity or (and) dielectric constant of nonlinear insulating materials can vary with the applied electric field As the strength increases, the conductance or (and) dielectric constant is nonlinear, so it has the ability to self-homogenize the electric field distribution in a non-uniform electric field, which can effectively inhibit the generation of space charges and the formation and growth of ...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K13/04C08K3/22C08K3/34C08K7/00C08K3/04C08K3/36C08K5/549C08K5/14H01B3/46
Inventor 韩宝忠李忠华李长明陈宇
Owner HARBIN UNIV OF SCI & TECH
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