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Extra-high-pressure-resistant high-temperature-resistant mixed silicone rubber and preparation method thereof

A technology of mixing silicone rubber, high pressure and high temperature, applied in the field of silicone rubber, can solve the problems of unusable, silicone rubber breakdown voltage strength, volume resistivity and other electrical properties improvement, to ensure stability, improve volume resistivity, The effect of increasing strength

Active Publication Date: 2020-07-03
XINAN TIANYU SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the invention improves the flame retardant performance of silicone rubber, it does not improve the electrical properties such as breakdown voltage strength and volume resistivity of silicone rubber, and cannot be used in high-voltage environments.

Method used

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  • Extra-high-pressure-resistant high-temperature-resistant mixed silicone rubber and preparation method thereof
  • Extra-high-pressure-resistant high-temperature-resistant mixed silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 A kind of ultra-high pressure and high temperature resistant mixing silicone rubber

[0029] The described ultra-high pressure and high temperature resistant mixed silicone rubber consists of the following components and parts by weight:

[0030] 70 parts of methyl vinyl silicone rubber raw rubber, 20 parts of fumed silica, 3 parts of hexamethyldisilazane, 1 part of dimethyldiethoxysilane, 0.1 part of zinc stearate, 5 parts of silicon micropowder 5 parts of nitrogen compound, 5 parts of iron oxide, 1 part of titanium dioxide, 0.1 part of vinyltriethoxysilane, 0.5 part of distilled water, 1 part of cerium oxide, and 1 part of flame retardant.

[0031] The methyl vinyl silicone rubber raw rubber is a methyl vinyl silicone rubber raw rubber with a vinyl-terminated vinyl molar content of 0.03% and a methyl vinyl silicone rubber raw rubber with a vinyl-terminated vinyl molar content of 0.05%. Composition by weight ratio 5:4.

[0032] The nitrogen compound is a...

Embodiment 2

[0038] Embodiment 2 A kind of ultra-high pressure and high temperature resistant mixing silicone rubber

[0039] The high-pressure and high-temperature resistant mixing silicone rubber consists of the following components and parts by weight: 100 parts of methyl vinyl silicone rubber raw rubber, 25 parts of fumed white carbon black, 5 parts of hexamethyldisilazane Parts, 2 parts of dimethyldiethoxysilane, 0.6 parts of zinc stearate, 18 parts of silicon micropowder, 12 parts of nitrogen compounds, 13 parts of iron oxide, 3 parts of titanium dioxide, 0.8 parts of vinyltriethoxysilane, distilled water 2 parts, 2 parts of cerium oxide, 2 parts of flame retardant.

[0040] The methyl vinyl silicone rubber raw rubber is vinyl terminated methyl vinyl silicone rubber with a vinyl molar content of 0.08% and vinyl terminated methyl vinyl silicone rubber with a vinyl molar content of 0.16%. Composition by weight ratio 7:3.

[0041] The nitrogen compound is silicon nitride.

[0042] Th...

Embodiment 3

[0047] Embodiment 3 A kind of ultra-high pressure and high temperature resistant mixing silicone rubber

[0048] The described ultra-high pressure and high temperature resistant mixed silicone rubber consists of the following components and parts by weight:

[0049] 120 parts of raw methyl vinyl silicone rubber, 30 parts of fumed silica, 6 parts of hexamethyldisilazane, 3 parts of dimethyldiethoxysilane, 1 part of zinc stearate, 30 parts of silicon micropowder 20 parts of nitrogen compound, 20 parts of iron oxide, 5 parts of titanium dioxide, 1 part of vinyltriethoxysilane, 3 parts of distilled water, 5 parts of cerium oxide, and 3 parts of flame retardant.

[0050] The methyl vinyl silicone rubber raw rubber is a methyl vinyl silicone rubber raw rubber with a vinyl-terminated vinyl molar content of 0.09% and a methyl vinyl silicone rubber raw rubber with a vinyl-terminated vinyl molar content of 0.30%. Composition by weight ratio 8:2.

[0051] The nitrogen compound is compo...

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Abstract

The invention belongs to the technical field of silicone rubber, and particularly relates to extra-high-pressure-resistant high-temperature-resistant mixed silicone rubber and a preparation method thereof. The extra-high-pressure-resistant high-temperature-resistant mixed silicone rubber provided by the invention comprises the following components in parts by weight: 70-120 parts of raw methyl vinyl silicone rubber, 20-30 parts of fumed silica, 3-6 parts of hexamethyldisilazane, 1-3 parts of dimethyldiethoxysilane, 0.1-1 part of zinc stearate, 5-30 parts of silica powder, 5-20 parts of a nitrogen compound, 5-20 parts of iron oxide, 1-5 parts of titanium dioxide, 0.1-1 part of vinyltriethoxysilane, 0.5-3 parts of distilled water, 1-5 parts of cerium oxide and 1-3 parts of a flame retardant.According to the extra-high-voltage-resistant high-temperature-resistant mixed silicone rubber provided by the invention, the flame retardance, the electrical property stability and the breakdown voltage of a silicone rubber material are remarkably improved. An electric power product produced by using the silicone rubber is higher in safety and more stable in quality.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber, and in particular relates to an ultra-high pressure and high temperature resistant mixing silicone rubber and a preparation method thereof. Background technique [0002] Due to the different structures and degrees of polymerization of the basic polymers used, the composition of rubber materials and formulations, the diversity of molding and vulcanization methods, silicone rubber constitutes a commodity group with multiple properties, multiple uses, and multiple product forms. According to the vulcanization temperature, silicone rubber can be divided into high temperature vulcanization silicone rubber and room temperature vulcanization silicone rubber. The high-temperature silicone rubber HVR (heatvulcanizing rubber) discussed in this patent is made of polyorganosiloxane (raw rubber) with a linear high degree of polymerization (5000-10000 siloxane chains), adding reinforcing fillers and ex...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08K13/06C08K9/06C08K7/26C08K5/5445C08K3/22C08K5/3472
CPCC08L83/04C08L2201/08C08L2205/025C08L2205/03C08L2201/02C08K2201/006C08K2003/2241C08K2003/2272C08K2003/2213C08K13/06C08K9/06C08K7/26C08K3/22C08K5/544C08K5/3472
Inventor 伍龙李凯陈威陈桂忠欧阳千李志元
Owner XINAN TIANYU SILICONE CO LTD
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