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Formula and preparation technology of composite silicone rubber insulator

A technology for compounding silicone rubber and insulators, applied in insulators, suspension/strain insulators, electrical components, etc., can solve the problem of electrical tracking resistance, mechanical properties and hydrophobic attenuation of insulators, reduced electrical and mechanical properties of insulators, and easy damage. Insulator integrity structure and other issues, to achieve excellent tracking resistance and mechanical properties and hydrophobicity, improve insulation and anti-aging properties, improve electrical strength and volume resistivity effects

Inactive Publication Date: 2017-12-01
WUHU KAIXIN ARRESTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Moreover, there are still the following problems in the existing insulator formula and preparation process. First, the formula lacks sufficient dispersant, which makes it difficult to effectively disperse among various materials, cannot form a stable dispersion system, and lacks electric tracking resistance. It is an important component of chemical properties, mechanical properties and hydrophobicity, which leads to the rapid decay of the tracking resistance, mechanical properties and hydrophobicity of insulators during regular use.
Especially in the preparation process, the general preparation method is independent preparation and then assembly, but this preparation process is easy to destroy the overall structure of the insulator, resulting in a great reduction in the electrical and mechanical properties of the insulator

Method used

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  • Formula and preparation technology of composite silicone rubber insulator

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Effect test

Embodiment 1

[0021] A composite silicone rubber insulator, the formula of which consists of the following raw materials in parts by weight:

[0022] 30 parts of epoxy resin, 20 parts of methyl vinyl silicone rubber, 10 parts of vinyl, 5 parts of precipitated silica, 4 parts of aluminum hydroxide, 2 parts of hydroxyl silicone oil, 2,5-dimethyl-2,5- 4 parts of dihexane, 4 parts of silicon micropowder, 1 part of hexamethyldisilazane, 3 parts of median diameter alumina powder, and 5 parts of nano-alumina.

Embodiment 2

[0024] A composite silicone rubber insulator, the formula of which consists of the following raw materials in parts by weight:

[0025] 35 parts of epoxy resin, 25 parts of methyl vinyl silicone rubber, 15 parts of vinyl, 7 parts of precipitated silica, 5 parts of aluminum hydroxide, 3 parts of hydroxyl silicone oil, 2,5-dimethyl-2,5- 5 parts of dihexane, 5 parts of silicon micropowder, 2 parts of hexamethyldisilazane, 4 parts of median diameter alumina powder, 6 parts of nano-alumina.

Embodiment 3

[0027] A composite silicone rubber insulator, the formula of which consists of the following raw materials in parts by weight:

[0028] 40 parts of epoxy resin, 30 parts of methyl vinyl silicone rubber, 20 parts of vinyl, 10 parts of precipitated silica, 6 parts of aluminum hydroxide, 4 parts of hydroxyl silicone oil, 2,5-dimethyl-2,5- 6 parts of dihexane, 6 parts of silicon micropowder, 3 parts of hexamethyldisilazane, 5 parts of median diameter alumina powder, and 8 parts of nano-alumina.

[0029] In above-mentioned embodiment 1 to embodiment 3:

[0030] Preferably, the specific surface area of ​​the precipitated silica is 200m 2 / g; the average particle diameter of the aluminum hydroxide is 1um, and the purity is 99.6%, and the silicon micropowder adopts the silicon dioxide with an active median diameter of 10-15um and a purity of 99.5%; the median diameter is oxidized The average particle size of aluminum powder is 12-22um. And the purity is 99.5%, and the average parti...

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Abstract

The invention discloses a formula and a preparation technology of a composite silicone rubber insulator. The formula comprises raw materials in parts by weight as follows: 30-40 parts of epoxy resin, 20-30 parts of methyl vinyl silicone rubber, 10-20 parts of vinyl, 5-10 parts of precipitated white carbon black, 4-6 parts of aluminum hydroxide, 2-4 parts of hydroxyl silicone oil, 4-6 parts of 2,5-dimethyl-2,5-dihexane, 4-6 parts of silica powder, 1-3 parts of hexamethyl disilazane, 3-5 parts of median-diameter alumina powder and 5-8 parts of nano aluminum oxide. Through preparation of base rubber, open mixing and kneading of silicone rubber as well as core rod polishing and skirt forming, the insulation performance and aging resistance of the compound insulator are improved, the compound insulator has better tracking resistance, mechanical performance and hydrophobicity, and a directly formed integrated structure can further improve the comprehensive property of the overall composite silicone rubber insulator.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a formula of a composite silicone rubber insulator and a preparation process thereof. Background technique [0002] Composite insulators are synthetic insulators molded by injection molding of silicone rubber. They are a new type of insulator completely different from porcelain insulators. The overall mechanical and electrical properties are superior to porcelain insulators and composite insulators. However, the surface aging of silicone rubber materials is serious, which affects its surface hydrophobicity and cannot be used stably for a long time. The main reason is that the unsaturated structure in the molecular structure of silicone rubber reacts with active oxygen atoms to destroy its chemical structure, while external chemical and physical factors such as oxygen, heat, light, humidity, and surface discharge also accelerate the aging of silicone rubber. external...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L83/07C08K13/02C08K3/36C08K3/22C08K5/5445H01B17/04H01B19/00
CPCC08L63/00C08K2003/2227C08K2201/003C08K2201/006C08K2201/011C08K2201/014C08L2205/02C08L2205/03H01B17/04H01B19/00C08L83/04C08K13/02C08K3/36C08K3/22C08K5/544
Inventor 陈波
Owner WUHU KAIXIN ARRESTER
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