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Aging-resistant silicone rubber composite material, and preparation method thereof

A composite material and silicone rubber technology, which is applied in the field of aging-resistant silicone rubber composite materials and their preparation, can solve the problems of poor reinforcement effect of raw materials, poor mechanical properties of silicone rubber composite materials, etc., and achieves good electrical performance and air aging resistance. The effect of good, excellent chemical resistance

Inactive Publication Date: 2019-06-14
国网河南省电力公司新野县供电公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned patents use modified halloysite nanotubes to form covalent bonds with the silicone rubber matrix to improve the compatibility between materials, but the reinforcing effect of the raw materials is still poor, and the mechanical properties of the obtained silicone rubber composites are poor.

Method used

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  • Aging-resistant silicone rubber composite material, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] An aging-resistant silicone rubber composite material, made of the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber, 8 parts of perfluoroether rubber, 20 parts of fumed white carbon black, 3 parts of polyimide, 6 parts of aluminum hydroxide fine powder, 0.5 part of silane coupling agent, 2 parts of dimethyldiethoxysilane, 1 part of hydroxyl silicone oil, 0.5 part of methyl hydrogen silicone oil and 1 part of vulcanizing agent.

[0023] The molecular weight of the methyl vinyl silicone rubber is 450000-650000, and the vinyl content is 0.13-0.22%.

[0024] The specific surface area of ​​the described fumed white carbon black is 150-250m 3 / g, particle size 20-50nm.

[0025] Described silane coupling agent is KH560.

[0026] The vulcanizing agent is bis-penta vulcanizing agent.

[0027] A preparation method of aging-resistant silicone rubber material, comprising the following steps:

[0028] (1) Put methyl vinyl silicone rubber, per...

Embodiment 2

[0032] An aging-resistant silicone rubber composite material, made of the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber, 9 parts of perfluoroether rubber, 23 parts of fumed white carbon black, 4 parts of polyimide, 8 parts of aluminum hydroxide fine powder, 0.6 parts of silane coupling agent, 3 parts of dimethyldiethoxysilane, 1.5 parts of hydroxyl silicone oil, 0.8 parts of methyl hydrogen silicone oil and 1.2 parts of vulcanizing agent.

[0033] The molecular weight of the methyl vinyl silicone rubber is 450000-650000, and the vinyl content is 0.13-0.22%.

[0034] The specific surface area of ​​the described fumed white carbon black is 150-250m 3 / g, particle size 20-50nm.

[0035] Described silane coupling agent is KH570.

[0036] The vulcanizing agent is bis(2,4-dichlorobenzoyl) peroxide.

[0037] A preparation method of aging-resistant silicone rubber material, comprising the following steps:

[0038] (1) Put methyl vinyl silico...

Embodiment 3

[0042] An aging-resistant silicone rubber composite material, made of the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber, 10 parts of perfluoroether rubber, 28 parts of fumed white carbon black, 5 parts of polyimide, 10 parts of aluminum hydroxide fine powder, 0.8 parts of silane coupling agent, 4 parts of dimethyldiethoxysilane, 2 parts of hydroxyl silicone oil, 1.0 part of methyl hydrogen-containing silicone oil and 1.5 parts of vulcanizing agent.

[0043] The molecular weight of the methyl vinyl silicone rubber is 450000-650000, and the vinyl content is 0.13-0.22%.

[0044] The specific surface area of ​​the described fumed white carbon black is 150-250m 3 / g, particle size 20-50nm.

[0045] Described silane coupling agent is KH570.

[0046] The vulcanizing agent is bis-penta vulcanizing agent.

[0047] A preparation method of aging-resistant silicone rubber material, comprising the following steps:

[0048] (1) Put methyl vinyl sil...

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Abstract

The invention discloses an aging-resistant silicone rubber composite material. The aging-resistant silicone rubber composite material is prepared from, by weight, 100 parts of methyl vinyl silicone rubber, 8 to 15 parts of perfluoroether rubber, 20 to 40 parts of fumed silica, 3 to 8 parts of polyimide, 6 to 12 parts of aluminum hydroxide micropowder, 0.5 to 1.0 part of a silane coupling agent, 2to 6 parts of dimethyldiethoxysilane, 1 to 3 parts of hydroxyl silicone oil, 0.5 to 1.5 parts of methyl hydrogen silicone oil, and 1 to 3 parts of a vulcanizing agent. The aging-resistant silicone rubber composite material is high Shore Hardness and mechanical strength, excellent in electrical performance and resistance to hot air aging, and be used for long time working under high temperature conditions.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an aging-resistant silicone rubber composite material and a preparation method thereof. Background technique [0002] Electrical insulators are important components in overhead transmission lines, which are required to withstand voltage and mechanical stress. In recent years, silicone rubber has excellent high and low temperature resistance, oil resistance, chemical resistance, weather resistance and electrical insulation properties. It is widely used in insulator shed sheath. However, under the high temperature and strong radiation effect caused by long-term ultraviolet radiation, the silicone rubber shed sheath will undergo oxidation reaction on the surface, and the hydrophobicity will decrease, resulting in poor aging resistance and short service life of the silicone rubber material. [0003] The Chinese patent application with the publication number CN1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L71/03C08L79/08C08L83/06C08L83/05C08K7/26C08K3/22
Inventor 刘华林王建张晗马海艳张琳琳杨德浩张宇江映阳
Owner 国网河南省电力公司新野县供电公司
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