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Rubber composition based on low phenyl silicone rubber, vulcanized rubber and preparation method and application thereof

A low-phenyl silicone rubber and rubber composition technology, applied in the field of rubber, can solve the problems that cannot meet the requirements of navigation equipment and electronic system vibration and noise reduction, temperature influence, storage modulus and loss factor changes, etc.

Active Publication Date: 2021-09-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the purposes of the present invention is to overcome that the existing silicone rubber damping elastomer material is easily affected by temperature, and the storage modulus and loss factor change greatly, which cannot meet the vibration and noise reduction requirements of various instruments, navigation equipment and electronic systems. Deficiencies in the use requirements

Method used

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  • Rubber composition based on low phenyl silicone rubber, vulcanized rubber and preparation method and application thereof
  • Rubber composition based on low phenyl silicone rubber, vulcanized rubber and preparation method and application thereof
  • Rubber composition based on low phenyl silicone rubber, vulcanized rubber and preparation method and application thereof

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Embodiment approach

[0034] According to a preferred embodiment of the present invention, the specific surface area of ​​the unmodified silica is 200-420m 2 / g.

[0035] According to another preferred embodiment of the present invention, the specific surface area of ​​the modified silica is 120-420m 2 / g; Preferably, the modified silica is fumed silica modified by at least one material selected from dimethyldichlorosilane, monomethyltrichlorosilane and hexamethyldisilazane .

[0036] Preferably, the peroxide vulcanizing agent is selected from the group consisting of 2,4-dichlorobenzoyl peroxide (two 2,4), benzoyl peroxide, dicumyl peroxide, di-tert-butyl peroxide, 2, At least one of 5-dimethyl-2,5-di-tert-butylperoxyhexane (double 25).

[0037] Preferably, the silicone oil is selected from at least one of phenyl silicone oil, vinyl silicone oil, methyl silicone oil, ethyl silicone oil, hydrogen-containing silicone oil, polyether silicone oil and hydroxyl silicone oil with a hydroxyl content of ...

Embodiment 1

[0086] The formula of the rubber composition is shown in Table 4.

[0087] Preparation process of vulcanized rubber:

[0088] (1) Add the low-phenyl silicone rubber matrix, white carbon black, diphenylsilanediol, solid silicon-containing filler, and silicone oil into the internal mixer for the first mixing. The speed of the internal mixer is 60rpm, and the mixing temperature is 80 ℃, the mixing time is 10min, and the mixing component A is obtained;

[0089] (2) Add the peroxide vulcanizing agent and iron oxide into the internal mixer, mix evenly with the mixing component A according to the mixing conditions in (1), thinly pass the sheet in the double-roller mill, and place it at room temperature for 8 hours , to get rubber compound B;

[0090] (3) Vulcanize the mixed rubber B with a flat vulcanizer at a pressure of 15MPa and a temperature of 160°C for 10 minutes to make a standard sample; then carry out a second-stage vulcanization in an oven at a temperature of 200°C and a ...

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Abstract

The invention relates to the field of rubber, and discloses a rubber composition based on low phenyl silicone rubber, vulcanized rubber and a preparation method and application thereof. The composition contains the following components which are stored in a mixed manner or independently: a low-phenyl silicone rubber matrix, white carbon black, diphenyl silanediol, a peroxide vulcanizing agent, iron oxide, silicone oil and a solid silicon-containing filler, and the low-phenyl silicone rubber matrix is selected from at least one of diphenyl dimethyl silicone rubber and phenyl methyl silicone rubber. The rubber composition provided by the invention can be used for preparing the damping silicone rubber with high damping and smaller temperature effect.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a rubber composition based on low phenyl silicone rubber, a method for preparing vulcanized rubber, the vulcanized rubber prepared by the method, and the application of the vulcanized rubber as a damping material. Background technique [0002] Silicone rubber is a special rubber material with -Si-O-Si- chain link as the main chain. It has stable mechanical properties in a certain wide temperature range or wide frequency, and has excellent high and low temperature resistance. [0003] As a damping material, silicone rubber can be widely used in cutting-edge technological fields such as aerospace, precision instruments, navigation equipment, rail transit, and national security. [0004] However, the damping factor of ordinary silicone rubber is small (generally 0.05-0.1), or the damping factor and elastic modulus vary greatly with temperature, so it is difficult to meet the stringent applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K13/02C08K3/36C08K5/5419C08K5/14C08K3/22C08K3/34
CPCC08L83/04C08L2205/025C08K2003/2272C08K13/02C08K3/36C08K5/5419C08K5/14C08K3/22C08K3/34C08K3/346
Inventor 孙攀解希铭唐功庆赵青松
Owner CHINA PETROLEUM & CHEM CORP
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