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Highly damping rubber composition and viscoelastic damper

A rubber composition, high-attenuation technology, applied in the direction of springs/shock absorbers, springs, low internal friction springs, etc., can solve the problems of reduced attenuation performance, insufficient durability, high attenuation rubber composition, etc., to achieve attenuation performance Excellent, excellent durability, excellent productivity effects

Inactive Publication Date: 2017-12-29
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the viscosity of the high-damping rubber composition containing a large amount of inorganic filler becomes too high, and the high-damping rubber composition containing a large amount of tack-imparting agent has too high tack. In both cases, there will be problems such as increased energy required for kneading to prepare a high damping rubber composition, or a long time.
[0007] In addition, problems such as further kneading or molding of the prepared high-attenuation rubber composition become difficult in order to produce a viscoelastic body having a desired three-dimensional shape
[0018] In addition, the viscoelastic bodies described in Patent Documents 1 to 7, etc., which use conventional high-attenuation rubber compositions also have the following problem: durability is not sufficient, especially when repeated application due to earthquakes, etc. It is easy to be damaged when it is deformed greatly, or the attenuation performance is easy to be greatly reduced

Method used

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  • Highly damping rubber composition and viscoelastic damper
  • Highly damping rubber composition and viscoelastic damper
  • Highly damping rubber composition and viscoelastic damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0176] Silica [NipSil (NipSil) KQ manufactured by Tosoh Silica Co., Ltd., wet-process silica, BET is blended in 100 parts by mass of natural rubber [SMR-CV60] which is a diene rubber Specific surface area: 240m 2 / g] 150 parts by mass, oil [aromatic mineral oil, Diana (Diana) (registered trademark) processing oil AH-16 manufactured by Idemitsu Kosan Co., Ltd.] 30 parts by mass, and silicone lubricant [ Struktol (Struktol) HT282 manufactured by Hiron Saleh "Struktol" company, a mixture of organosilicone compounds, metal soaps, and inert carriers, as active ingredients of organosilicone compounds and The amount of metal soap: 70%] 3 parts by mass, and each component except the cross-linking component in the components shown in the following Table 1, after kneading using an internal mixer, and then adding the cross-linking component Kneading is carried out to prepare a high damping rubber composition.

[0177] [Table 1]

[0178] Table 1

[0179] Element

parts by ...

Embodiment 2、 Embodiment 3

[0194]

[0195] With respect to 100 parts by mass of natural rubber, the blending ratio of the silicone-based lubricant was 0.5 parts by mass (Comparative Example 2), 1 part by mass (Example 2), 5 parts by mass (Example 3), and 8 parts by mass (Comparative Example 3), except that, in the same manner as in Example 1, a high-attenuation rubber composition was prepared.

Embodiment 4、 Embodiment 5

[0196]

[0197] With respect to 100 mass parts of natural rubber, the compounding ratio of silicon dioxide is set to 90 mass parts (comparative example 4), 100 mass parts (embodiment 4), 180 mass parts (embodiment 5), in addition, with A high-attenuation rubber composition was prepared in the same manner as in Example 1.

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Abstract

It is an object of the present invention to provide a kneading machine which is easy to knead or form and which is easy to take out from the kneader after kneading, and therefore has excellent productivity and durability when the large deformation is repeatedly applied due to an earthquake or the like A novel viscoelastic damper including a highly damped rubber composition capable of producing an elastic body and a viscoelastic body made of the highly damped rubber composition. A high-damping rubber composition comprises 100 to 180 parts by mass of silica, 20 to 50 parts by mass of oil, and 1 to 5 parts by mass of a compound having a double bond in a main chain. The viscoelastic damper has a viscoelastic body made of the highly damped rubber composition.

Description

technical field [0001] The present invention relates to a high-damping rubber composition used as a raw material of a viscoelastic body that moderates or absorbs transmission of vibration energy, and a viscoelastic shock absorber including a viscoelastic body including the high-damping rubber composition. Background technique [0002] For example, viscoelastic materials are used in structures such as buildings and bridges, industrial machines, airplanes, automobiles, railway vehicles, computers and their peripheral devices, and household electric devices. By using a viscoelastic body, it is possible to reduce or absorb the transmission of vibration energy and perform vibration isolation, shock absorption, vibration damping, vibration isolation, etc. [0003] The viscoelastic body is formed of a high-attenuation rubber composition mainly containing rubber such as natural rubber. [0004] In the high-attenuation rubber composition, in order to increase the hysteresis loss (hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L91/00C08L83/04C08L57/02C08L45/02C08K13/06C08K9/08C08K5/09C08K3/04C08K3/22C08K5/3447C08K3/36F16F1/36
CPCC08K2003/2296C08K2201/006C08L7/00C08L2205/035F16F1/3605C08L91/00C08L83/04C08L57/02C08L45/02C08K13/06C08K9/08C08K5/09C08K3/04C08K3/22C08K5/3447C08K3/36C08L9/00C08K5/54C08L21/00C08L93/04C09K3/00
Inventor 石田直之冨田岳宏
Owner SUMITOMO RUBBER IND LTD