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A kind of high damping silicone rubber composite material and preparation method thereof

A technology of composite materials and silicone rubber, which is applied in the fields of vibration isolation, vibration reduction, and damping material formulation design, can solve the problems of difficult preparation of interpenetrating network structures, difficulty in providing temperature range, poor flexibility, etc., to achieve enhanced strength and improved damping Performance, the effect of increasing internal friction

Active Publication Date: 2022-05-27
CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art, the method of copolymerization modification has poor flexibility and high cost. It is difficult to provide products with wide temperature range, high stability and low cost through blending modification, and the preparation of interpenetrating network structure is difficult.

Method used

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  • A kind of high damping silicone rubber composite material and preparation method thereof
  • A kind of high damping silicone rubber composite material and preparation method thereof

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preparation example Construction

[0038] The preparation process of all embodiments is as follows:

[0039] Add the silicone rubber to the double-roll mill and add 1 / 2 of fumed silica, high rubber powder, and silicone elastomer micropowder to the silicone rubber after it is covered with rolls;

[0040] Then add 1 / 2 of diphenylsilanediol and phenyl silicone oil into the rubber mixture, tap the rubber left and right, and mix in a triangular bag;

[0041] Add the remaining fumed silica, high rubber powder, and silicone elastomer micropowder again. After the powder is finished, continue to add the remaining diphenylsilanediol and phenyl silicone oil, tap the left and right sides, mix in triangle bags, and gradually Reduce the roller distance to 0.5mm thin pass 5 times.

[0042] Wrap the thinned rubber mixture with PE film and let it stand for 24 hours, put the static rubber mixture into the double-roller machine again, re-mix until the rubber surface is smooth and smooth, and the edge is not jagged, and then the ...

Embodiment 1

[0047] 100 parts of silicone rubber, fumed silica: 20 parts, high rubber powder: 50 parts, silicone elastomer micropowder: 50 parts, diphenylsilanediol: 1 part, phenyl silicone oil: 3 parts, 2,5- Dimethyl-2,5-bis(tert-butylperoxy)hexane: 1 part.

Embodiment 2

[0049] 100 parts of silicone rubber, fumed silica: 80 parts, high rubber powder: 10 parts, silicone elastomer micropowder: 10 parts, diphenylsilanediol: 3 parts, phenyl silicone oil: 3 parts, 2,5- Dimethyl-2,5-bis(tert-butylperoxy)hexane: 1 part.

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Abstract

The invention relates to a high damping silicone rubber composite material. The high-damping silicone rubber composite material comprises the following raw materials in parts by mass: 100 parts of silicone rubber, 20-80 parts of fumed silica, 10-50 parts of high rubber powder, 10-50 parts of silicone elastomer micropowder, two Phenylsilanediol: 1-3 parts, phenyl silicone oil: 1-5 parts, 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane: 1-2 parts. The damping silicon material of the present invention uses silicone rubber as the base material of the damping material, and high rubber powder is filled in the silicone rubber as elastic particles. When impacted, the particles deform and absorb energy. The hysteresis effect in the state greatly improves the damping performance of the silicone rubber material and improves the vibration isolation performance of the silicon material vibration isolator.

Description

technical field [0001] The invention relates to a high-damping silicone rubber composite material, which belongs to the technical field of formula design of damping materials and is mainly used in the field of vibration reduction and vibration isolation. Background technique [0002] Vibration and noise are a form of energy. In order to reduce vibration and noise, we must try to convert this mechanical energy into other forms of energy and release it. When the viscoelastic polymer material is deformed by an external force, there is a hysteresis loss that can convert a part of mechanical vibration energy or sound energy into heat energy, thereby reducing vibration and noise. The temperature range in which a single polymer acts as a damper is very narrow, and it is difficult to meet the requirements of the environment. [0003] Silicone materials have good thermal stability, low temperature flexibility and aging resistance due to the non-polarity of the main chain siloxane se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08K7/26C08K5/549C08K5/14
CPCC08L83/04C08L2205/035C08L2205/025C08K2201/006C08K7/26C08K5/549C08K5/14
Inventor 熊平范骁陈珏
Owner CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD