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A high-damping composition and a viscoelastic damper

A technology of high damping composition and viscoelasticity, applied in springs/shock absorbers, low internal friction springs, springs made of plastic materials, etc., can solve the problems of reduced processability and high adhesion, and achieve the purpose of suppressing damping performance The effect of lowering, excellent damping performance, and low cost

Inactive Publication Date: 2013-10-23
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, when the compounding ratio of the rosin derivative is increased in order to further improve the damping performance compared with the present situation, the stickiness during kneading becomes too high and the workability decreases.

Method used

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  • A high-damping composition and a viscoelastic damper
  • A high-damping composition and a viscoelastic damper
  • A high-damping composition and a viscoelastic damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] (Preparation of high damping composition)

[0115] In 40 parts by mass of natural rubber [SMR (Standard Malaysian Rubber)-CV60] as a base polymer and 60 parts by mass of isoprene rubber [NIPOL (registered trademark) IR2200 manufactured by Zeon Corporation], 120 parts by mass of Silicon oxide [NipSil (registered trademark) KQ manufactured by Tosoh Silica Co., Ltd.], 10 parts by mass of coumarone-indene resin [Nittoresin (registered trademark) Coumarone G-90 manufactured by Nippon Chemical Co., Ltd.], 10 parts by mass Dicyclopentadiene-based petroleum resin [MARUKAREZ (registered trademark) M-890A manufactured by Maruzen Petrochemical Co., Ltd.] and the components shown in Table 1 below were kneaded using a closed mixer to prepare high Damping composition. It should be noted that the parts by mass in Table 1 are parts by mass relative to 100 parts by mass of the total amount of natural rubber and isoprene rubber as the base polymer, respectively.

[0116] Table 1

[01...

Embodiment 2

[0130] The compounding ratio of natural rubber was 20 parts by mass, the compounding ratio of isoprene rubber was 80 parts by mass, the compounding ratio of vulcanization accelerator NS was 1.16 parts by mass, and the compounding ratio of vulcanization accelerator TBT was 1.16 parts by mass, and a high damping composition was prepared in the same manner as in Example 1 except that.

Embodiment 3

[0132] No natural rubber is added, the compounding ratio of isoprene rubber is 100 parts by mass, the compounding ratio of vulcanization accelerator NS is 1.2 parts by mass, and the compounding ratio of vulcanization accelerator TBT is 1.2 parts by mass. Except that, a high damping composition was prepared in the same manner as in Example 1.

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Abstract

The invention provides a high-damping composition and a viscoelastic damper. The high-damping composition is capable of forming a high-damping component which has excellent damping performance and slightly-reduced damping performance when bearing large deformation. The viscoelastic damper which can be used in buildings is used as a viscoelastic body of the high-damping component and is formed by the high-damping component. The high-damping composition cooperates with silicon dioxide and resin in a base silicon dioxide. The above base silicon dioxide independently uses isoprene rubber or two kinds of rubber including the isoprene rubber and natural rubber, wherein the two kinds of rubber are used in such a manner that the isoprene rubber is 55 percent by weight in the amount of the two above kinds of rubber. The viscoelastic damper comprises a viscoelastic body formed by the above high-damping composition.

Description

technical field [0001] The present invention relates to a high-damping polymer serving as a basis for a high-damping member for alleviating or absorbing vibration energy transmission, and a viscoelastic damper including a viscoelastic body as a high-damping member formed of the above-mentioned high-damping composition. Background technique [0002] High damping parts are used in a wide range of fields such as buildings, bridges and other structures, industrial machinery, aircraft, automobiles, railway vehicles, computers and their peripheral equipment, household electrical equipment, and automobile tires. By using the above-mentioned high-damping member, the transmission of vibration energy can be relaxed or absorbed, that is, shock isolation, shock absorption, vibration damping, vibration prevention, and the like can be performed. [0003] The above-mentioned high-damping member is mainly formed of a high-damping composition containing natural rubber or the like as a base p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08L7/00C08L45/00C08L57/02C08K3/36F16F1/36
CPCC08K3/36C08L7/00C08L9/00C08L45/02F16F15/04
Inventor 富田岳宏
Owner SUMITOMO RUBBER IND LTD