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A kind of high-voltage electric corrosion-resistant silicone rubber composition for composite insulators and its preparation method

A technology of silicone rubber composition and composite insulator, which is applied in the field of silicone rubber composition, which can solve the problems of poor processing performance and reduced mechanical strength of silicone rubber materials, and achieve mechanical performance retention, increased dehydration temperature, and reduced particle size Effect

Active Publication Date: 2019-03-08
STATE GRID CORP OF CHINA +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding a large amount of aluminum hydroxide powder will lead to poor processing performance of silicone rubber materials, and the mechanical strength after vulcanization will also decrease.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw materials in the following parts by mass are used to prepare the high-voltage electric corrosion-resistant silicone rubber composition for composite insulators of the present invention:

[0027] 100 parts of methyl vinyl silicone rubber raw rubber, 2 parts of ferric oxide nanoparticles, 1 part of nano-magnesium hydroxide, 1 part of nano-cerium dioxide, 1 part of nano-titanium dioxide, 60 parts of aluminum hydroxide, nano-sized aluminum hydroxide 10 parts, 20 parts of modified aluminum hydroxide, 60 parts of fumed silica, 2.0 parts of polyvinyl silicone oil, 1.5 parts of methyl hydrogen silicone oil, 9 parts of cyclosilazane, 2,5-dimethyl-2 , 2 parts of 5-di-tert-butylperoxyhexane.

[0028] The preparation method of the high-voltage electric corrosion-resistant silicone rubber composition for composite insulators is as follows:

[0029] (1) Add 100 parts of methyl vinyl silicone rubber raw rubber into the kneader;

[0030] (2) Mix the metal oxide nanoparticles ...

Embodiment 2

[0036] The raw materials in the following parts by mass are used to prepare the high-voltage electric corrosion-resistant silicone rubber composition for composite insulators of the present invention:

[0037] 100 parts of methyl vinyl silicone rubber raw rubber, 1 part of ferric oxide nanoparticles, 1.5 parts of nano-cerium dioxide, 2 parts of nano-titanium dioxide, 90 parts of aluminum hydroxide, 10 parts of nano-modified aluminum hydroxide, fumed white 40 parts of carbon black, 1.5 parts of polyvinyl silicone oil, 6 parts of cyclosilazane, and 1 part of 2,5-dimethyl-2,5-di-tert-butylperoxyhexane.

[0038] The preparation method of the high-voltage electric corrosion-resistant silicone rubber composition for composite insulators is as follows:

[0039] (1) Add 100 parts of methyl vinyl silicone rubber raw rubber into the kneader;

[0040] (2) Mix the metal oxide nanoparticles and aluminum hydroxide, add in the kneader in 5 times, and then add fumed white carbon black, cross...

Embodiment 3

[0046] The raw materials in the following parts by mass are used to prepare the high-voltage electric corrosion-resistant silicone rubber composition for composite insulators of the present invention:

[0047] 100 parts of raw methyl vinyl silicone rubber, 3 parts of ferric oxide nanoparticles, 1 part of nano-manganese dioxide, 80 parts of aluminum hydroxide, 10 parts of nano-modified aluminum hydroxide, 50 parts of fumed white carbon black, 2.0 parts of polyvinyl silicone oil, 8 parts of cyclosilazane, and 2 parts of 2,5-dimethyl-2,5-di-tert-butylperoxyhexane.

[0048] The preparation method of the high-voltage electric corrosion-resistant silicone rubber composition for composite insulators described in Examples 1-3 is as follows:

[0049] (1) Add 100 parts of methyl vinyl silicone rubber raw rubber into the kneader;

[0050] (2) Mix the metal oxide nanoparticles and aluminum hydroxide, add in the kneader in 5 times, and then add fumed white carbon black, crosslinking agent...

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Abstract

The invention present invention discloses a silicon rubber composition with high-voltage electric corrosion resistance for a composite insulator. The composition is prepared from the following raw materials in parts by weight: 100 parts of crude rubber of methyl vinyl silicone rubber, 4-6 parts of metallic oxide nanometer particles, 90-130 parts of aluminum hydroxide, 40-60 parts of vapor-phase white carbon black, 1.5-6 parts of a cross-linking agent, 3-12 parts of a structuralized control agent and 1-2 parts of a vulcanizing agent. The raw materials of the composition are easy to obtain, the forming process is simple, and the prepared silicon rubber composition with the high-voltage electric corrosion resistance for the composite insulator has higher high-voltage electric corrosion resistant capacity. In addition, a favorable mechanical property is reserved.

Description

【Technical field】 [0001] The invention relates to a silicone rubber composition, in particular to a high-voltage electric corrosion-resistant silicone rubber composition for composite insulators. 【Background technique】 [0002] Composite insulators have many advantages such as light weight, high mechanical strength, strong water repellency and water repellency, high pollution flashover voltage resistance, etc., and are widely used at home and abroad. With the rapid development of ultra-high voltage and ultra-high voltage construction in China, the voltage level of operating lines has been continuously improved. At present, lines of 1000kV or even higher levels have appeared, which puts forward higher requirements for the electrical resistance of composite insulators. [0003] The shed of the composite insulator is made of silicone rubber material. High-temperature vulcanized silicone rubber has excellent heat resistance, cold resistance, dielectric properties, ozone resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K13/06C08K9/06C08K3/22C08K3/36C08K5/14
Inventor 李飞张翀肖雨陈新郑浩汪滔曹炯操松元
Owner STATE GRID CORP OF CHINA
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