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High damping composition and viscoelastic damper

A composition and high-attenuation technology, applied in the field of high-attenuation compositions and viscoelastic dampers, can solve the problem that the attenuation performance of high-attenuation components cannot be improved, the requirements of high-attenuation cannot be fully met, and it is not easy to knead or form. problem, to achieve the effect of excellent processability, easy access, and small decline in attenuation performance.

Inactive Publication Date: 2015-06-10
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, with these conventional structures, the attenuation performance of the high-attenuation member cannot be sufficiently improved, and in order to further improve the attenuation performance compared with the present situation, it is conceivable to further increase the compounding ratio of the inorganic filler, the tackiness imparting agent, etc.
[0006] However, it is difficult to knead the high-attenuation composition containing a large amount of inorganic filler, and the high-attenuation composition containing a large amount of tackifying agent becomes too high in tack during kneading. Not easy to knead or shape to produce high-attenuation components with the desired three-dimensional shape
[0013] However, the current situation is that even the above configuration cannot fully meet the demand for further high attenuation in recent years.

Method used

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  • High damping composition and viscoelastic damper
  • High damping composition and viscoelastic damper
  • High damping composition and viscoelastic damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167] (Preparation of High Attenuation Composition)

[0168] Natural rubber [SMR (Standard Malaysian Rubber (Standard Malaysian Rubber))-CV60] 30 parts by mass, polybutadiene rubber [UBEPOL (registered trademark) BR150 manufactured by Ube Industries Co., Ltd., Mooney Viscosity (ML 1+4 , 100° C.): 43, cis-1,4 bond content: 98% by mass] 60 parts by mass, and 1,2-polybutadiene-based elastomer [JSR (registered trademark) RB830 manufactured by JSR Co., Ltd., 1,2-bond: 93%] 10 parts by mass was used as a crosslinkable rubber.

[0169] In the total amount of the crosslinkable rubber, the compounding ratio of the polybutadiene rubber was 60% by mass, and the compounding ratio of the 1,2-polybutadiene-based elastomer was 10% by mass.

[0170] In 100 parts by mass of the total amount of the crosslinkable rubber, 125 parts by mass of silica [NipSil (NipSil) KQ manufactured by Tosoh Silica Co., Ltd.] was blended as the formula (1) Hexyltriethoxysilane [KBE-3063 manufactured by Shin-Et...

Embodiment 2

[0187] In addition to setting the blending amount of natural rubber as 50 parts by mass, the blending amount of polybutadiene rubber as 40 parts by mass, and the blending amount of 1,2-polybutadiene elastomer as 10 parts by mass, in the same manner as in Example 1 High attenuation compositions were prepared in the same manner. In addition, kneading was easy, and the workability evaluation was good (◯).

[0188] In the total amount of the crosslinkable rubber, the compounding ratio of the polybutadiene rubber was 40% by mass, and the compounding ratio of the 1,2-polybutadiene-based elastomer was 10% by mass.

Embodiment 3

[0190]In addition to setting the blending amount of natural rubber as 10 parts by mass, the blending amount of polybutadiene rubber as 80 parts by mass, and the blending amount of 1,2-polybutadiene-based elastomer as 10 parts by mass, the same method as in Example 1 High attenuation compositions were prepared in the same manner. In addition, kneading was easy, and the workability evaluation was good (◯).

[0191] In the total amount of the crosslinkable rubber, the blending ratio of the polybutadiene rubber was 80% by mass, and the blending ratio of the 1,2-polybutadiene-based elastomer was 10% by mass.

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Abstract

The invention provides a high damping composition forming a high damping member with excellent damping performance, and the high damping member is small in falling range of the damping performance when large deformation is repeatedly applied; the invention also provides a viscoelastic damper having a viscoelastic body containing the high damping composition; the high damping composition is formed by deploying silicon dioxide, alkyl silanization agent, phenyl silanization agent and silane coupling agent in three crosslinking rubbers including polyisoprene rubber, polybutadiene rubber and 1,2-polybutadiene elastomer. The viscoelastic damper has the viscoelastic body containing the high damping composition.

Description

technical field [0001] The present invention relates to a high-attenuation composition which becomes the basis of a high-attenuation member for alleviating or absorbing the transmission of vibration energy, and a viscoelastic damper which comprises the high-attenuation A viscoelastic body of the high attenuation component of the attenuation composition. Background technique [0002] For example, high-attenuation members are used in a wide range of fields such as structures such as buildings and bridges, industrial machinery, aircraft, automobiles, railway vehicles, computers and their peripheral equipment, household electrical equipment, and automobile tires. By using high-attenuation components, the transmission of vibration energy can be moderated or absorbed, that is, shock-proof, shock-proof, vibration-proof, vibration-proof, etc. [0003] The high-attenuation member is formed of a high-attenuation composition mainly containing crosslinkable rubber such as natural rubbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08L7/00C08K13/02C08K3/36C08K5/5419C08K5/548
CPCC08L7/00C08L9/00C08L2205/02C08L2205/035C08L45/02C08L57/02C08K13/02C08K3/36C08K5/5419C08K5/548C08C19/25C08J5/00C08K5/541
Inventor 冨田岳宏正尾菜実松谷雄一朗
Owner SUMITOMO RUBBER IND LTD
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