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Shock-isolating or shock-absorbing devices

A shock-absorbing device, high-attenuation technology, applied in shock absorbers, springs/shock absorbers, shock absorbers, etc., can solve the problems of low attenuation performance of EPDM, ozone deterioration, and inability to fully follow large deformations of rubber parts. Effects of excellent elongation or attenuation properties and excellent ozone resistance

Inactive Publication Date: 2015-11-25
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, EPDM may not be able to fully follow the large deformation of rubber parts due to its low elongation
In addition, in order to contribute to the attenuation performance of rubber parts, the covering rubber layer is also required to have a certain degree of attenuation performance, but EPDM has low attenuation performance, so it hardly helps
[0008] On the other hand, butyl rubber has excellent gas barrier properties, high elongation, and good attenuation performance, but it has the problem of being easily degraded by ozone.

Method used

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  • Shock-isolating or shock-absorbing devices
  • Shock-isolating or shock-absorbing devices
  • Shock-isolating or shock-absorbing devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] 80 parts by mass of bromobutyl rubber [ExxonBromobutyl 2255 from ExxonMobil Chemical] and EPDM [Esprene (registered trademark) 505A from Sumitomo Chemical Co., Ltd., ethylene-propylene-ethylidene norbornene copolymer rubber, with an ethylene content of 50 mol%, Diene (ethylene norbornene) content: 9.5 mol%] 20 parts by mass were blended as a rubber component. The ratio of EPDM in 100 parts by mass of the total amount of the rubber components is 20 parts by mass.

[0094] A surface-treated calcium carbonate [Bai Yanhua (registered trademark) DD from ShiraishiCalcium Co., Ltd., and a product obtained by surface-treating synthetic calcium carbonate with rosin acid] in 100 parts by mass of the rubber component mentioned above, 50 parts by mass, carbon [Mitsubishi Chemical Co., Ltd.] DIABLACK (registered trademark) H, carbon black HAF, nitrogen adsorption specific surface area: 79m 2 / g] 50 parts by mass, softener [Diana (registered trademark) process oil PW-90 from Idemitsu Ko...

Embodiment 2

[0105] As carbon, with nitrogen adsorption specific surface area of ​​27m 2 Except 65 parts by mass of carbon black GPF [DIABLACKG of Mitsubishi Chemical Co., Ltd.] per g, the coated rubber composition was prepared in the same manner as in Example 1.

Embodiment 3

[0107] Carbon black HAF [DIABLACKH above, nitrogen adsorption specific surface area: 79m 2 / g] except that the amount was 60 parts by mass, a coating rubber composition was prepared in the same manner as in Example 1.

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Abstract

The present invention provides a novel coating rubber composition and a vibration preventing / damping device with the same, which particularly has the following advantages at a large-deformation state: high ozone resistance, high rubber strength, high extension rate, high damping performance, etc. The coating rubber composition is used as a rubber component and comprises two kinds of rubbers, namely halogenated butyl rubber and ethylene-propylene-diene copolymer rubber. Furthermore the coating rubber composition is provided with surface treatment calcium carbonate. In the vibration preventing / damping device (1), an exposed surface of a rubber component (4) which is composed of diolefin series high-damping rubber is coated by a coating rubber layer (5) which is composed of the coating rubber composition.

Description

Technical field [0001] The present invention relates to a shock-absorbing or shock-absorbing device in which the exposed surface of the rubber member is covered with a covering rubber layer in order to improve the weather resistance of the rubber component for shock-absorbing and / or shock-absorbing. Background technique [0002] As an isolation or damping device used in the isolation or damping of structures such as buildings, bridges, etc., for example, it is known to include a pair of flanges made of steel plates and the like, and a high-attenuation rubber sandwiched between the flanges. The rubber parts of the device, etc. The aforementioned pair of flanges and the rubber member are integrated with each other by vulcanization bonding or the like. [0003] In a state where one of the pair of flanges is fixed to the foundation under the structure, and the other is fixed to the structure, the above-mentioned shock-absorbing or damping device is attached to the structure. [0004] W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/28C08L23/16C08K9/04C08K3/26C08K13/06C08K3/04F16F7/00
CPCC09D121/00F16F15/00E04H9/021
Inventor 松谷雄一朗兵头建彦奥山英之
Owner SUMITOMO RUBBER IND LTD