Self-lubricating silicone rubber and preparation method thereof

A silicone rubber and self-lubricating technology, which is applied in the field of self-lubricating silicone and its preparation, can solve the problems that silicone rubber cannot be used as a dynamic sealing material, and the surface friction of silicone rubber is large, so as to achieve dynamic sealing effect and reduce surface friction , Improve the effect of hydrophobic performance

Inactive Publication Date: 2018-03-20
东莞新东方科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface friction of silicone rubber is relatively large, so that silicone rubber cannot be used as a dynamic sealing material, so the development of a self-lubricating silicone rubber has a good prospect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A self-lubricating silicone rubber, comprising the following components in parts by weight: 100 parts of methyl vinyl silicone rubber, 20 parts of fumed silicon dioxide, 3 parts of hydroxy silicone oil, 0.5 parts of fluorine release agent, methyl phenyl silicone oil 20 parts, 7 parts of magnesium oxide.

[0018] The preparation method of described self-lubricating silicone rubber, comprises the steps:

[0019] (1) Weigh each component by formula;

[0020] (2) Put the methyl vinyl silicone rubber into the kneader and knead it;

[0021] (3) Add fumed silica into the kneader in batches and mix and knead with methyl vinyl silicone rubber. During this process, add hydroxy silicone oil, fluorine release agent, methyl phenyl silicone oil and magnesium oxide, mix well and then heat up 160°C, continue kneading for 2 hours after forming a dough;

[0022] (4) cooling and filtering the product obtained in step (3) to obtain the self-lubricating silicone rubber.

Embodiment 2

[0024] A self-lubricating silicone rubber, comprising the following components in parts by weight: 100 parts of methyl vinyl silicone rubber, 40 parts of fumed silicon dioxide, 5 parts of hydroxy silicone oil, 0.1 part of fluorine release agent, methyl phenyl silicone oil 15 parts, magnesium oxide 10 parts.

[0025] The preparation method of described water-resistant silicone rubber, comprises the steps:

[0026] The preparation method of described self-lubricating silicone rubber, comprises the steps:

[0027] (1) Weigh each component by formula;

[0028] (2) Put the methyl vinyl silicone rubber into the kneader and knead it;

[0029] (3) Add fumed silica into the kneader in batches and mix and knead with methyl vinyl silicone rubber. During this process, add hydroxy silicone oil, fluorine release agent, methyl phenyl silicone oil and magnesium oxide, mix well and then heat up 150°C, continue kneading for 1.5 hours after the dough is formed;

[0030] (4) cooling and filte...

Embodiment 3

[0032] A self-lubricating silicone rubber, comprising the following components by weight: 100 parts of methyl vinyl silicone rubber, 50 parts of fumed silicon dioxide, 1 part of hydroxy silicone oil, 1 part of fluorine release agent, and methyl phenyl silicone oil 10 parts, 2 parts of magnesium oxide.

[0033] The preparation method of described self-lubricating silicone rubber, comprises the steps:

[0034] (1) Weigh each component by formula;

[0035] (2) Put the methyl vinyl silicone rubber into the kneader and knead it;

[0036] (3) Add fumed silica into the kneader in batches and mix and knead with methyl vinyl silicone rubber. During this process, add hydroxy silicone oil, fluorine release agent, methyl phenyl silicone oil and magnesium oxide, mix well and then heat up 140°C, continue kneading for 1 hour after forming a dough;

[0037] (4) cooling and filtering the product obtained in step (3) to obtain the self-lubricating silicone rubber.

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PUM

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Abstract

The invention provides a self-lubricating silicone rubber which is characterized by being prepared from all the following ingredients in parts by weight: 100 parts of methyl vinyl silicone rubber, 20to 50 parts of fumed silica, 1 to 5 parts of hydroxyl silicone oil, 0.1 to 1 part of fluorine mold release agent, 10 to 20 parts of methyl phenyl silicone oil and 2 to 10 parts of magnesium oxide. According to the self-lubricating silicone rubber and a preparation method thereof, raw rubber matching is improved to improve physical performance of the silicone rubber, non-reactive silicone oil is added to reduce surface friction after silica gel vulcanization, the defined amount of MgO is added to improve reverse resistance of silica gel products, and the special fluorine mold release agent ingredient is added to improve demoulding performance and roller banding performance; thus, basic performance of the silicone rubber is not affected, surface friction of the silica gel is reduced, productabrasion is reduced, a dynamic sealing effect of the silica gel is achieved, and service life of products is prolonged.

Description

technical field [0001] The invention relates to the technical field of silica gel, in particular to a self-lubricating silica gel and a preparation method thereof. Background technique [0002] Silicone rubber is a polymer insulating material with both inorganic and organic properties. It is a chain structure formed by Si-O (silicon-oxygen) bonds. The Si-O bond energy is 443.5KJ / MOL, which is higher than the C-C bond energy (355KJ / MOL) is much higher, and because of its unique molecular structure, silicone rubber has better heat resistance, electrical insulation, chemical stability, etc. than other common rubbers. And because a very small amount of unsaturated vinyl and organic groups are introduced into its molecular side chain, such as methyl, phenyl, etc., this structure of silicone rubber has aging resistance and weather resistance, and has the effect on ozone and ultraviolet rays. It is also very stable and has excellent electrical insulation properties. Its resistivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K3/36C08K3/22C09K3/10
CPCC08L83/04C08K2003/222C08L2205/025C08L2205/03C09K3/10C08K3/36C08K3/22
Inventor 田玉文范强
Owner 东莞新东方科技有限公司
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