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high damping composition

A technology of high damping composition and homopolymer, applied in the direction of protective buildings/shelters, building components, shockproof, etc. Excellent, excellent damping performance, small effect of temperature dependence

Inactive Publication Date: 2016-04-06
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high damping composition compounded with a large amount of silica has the following problems: the viscosity during kneading increases, the workability decreases, and it is difficult to knead or mold the above high damping composition into the above three-dimensional shape to produce the desired material. Three-dimensional shaped high-damping components
[0010] However, depending on the type and compounding ratio of the liquid rubber, the temperature dependence of the rigidity of the high-damping part increases, and there is a problem that a high-damping part with stable rigidity cannot be formed over a wide temperature range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0120] (Preparation of high damping composition)

[0121] 60 parts by mass of liquid IR (LIR-50 manufactured by Kuraray Co., Ltd.) as a liquid homopolymer and silica as a filler are mixed with 100 parts by mass of natural rubber [SMR (Standard Malaysian Rubber)-CV60] which is a diene rubber. (NipSilKQ manufactured by Tosoh Silica Co., Ltd.) 135 parts by mass, carbon black (FEF, SeastSO manufactured by Tokai Tanso Co., Ltd.) 3 parts by mass, and the components shown in Table 1 below were mixed , using an internal mixer to knead to prepare a high damping composition.

[0122] The mixing ratio of the liquid IR was 60 parts by mass relative to 100 parts by mass of the diene rubber, and 43.5 parts by mass relative to 100 parts by mass of the total amount of silica and carbon black as fillers.

[0123] [Table 1]

[0124] Element

parts by mass

Silane compound

23

Benzimidazole Antiaging Agent

2

Quinone Antiaging Agent

2

Zinc oxid...

Embodiment 2

[0136] A high damping composition was prepared in the same manner as in Example 1 except that 100 parts by mass of butadiene rubber [UBEPOL (registered trademark) BR150L manufactured by Ube Industries, Ltd.] was used as the diene rubber.

[0137] The mixing ratio of the liquid IR was 60 parts by mass relative to 100 parts by mass of the diene rubber, and 43.5 parts by mass relative to 100 parts by mass of the total amount of silica and carbon black as fillers.

Embodiment 3

[0139] As the diene rubber, 70 parts by mass of natural rubber [SMR (Standard Malaysian Rubber)-CV60] and 30 parts by mass of butadiene rubber [UBEPOL (registered trademark) BR150L manufactured by Ube Industries, Ltd.] were used in combination, and other , the same operation as in Example 1 to prepare a high damping composition.

[0140] The mixing ratio of the liquid IR was 60 parts by mass relative to 100 parts by mass of the diene rubber, and 43.5 parts by mass relative to 100 parts by mass of the total amount of silica and carbon black as fillers.

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Abstract

PURPOSE: A liquid homopolymer-containing high damping composition is provided to have excellent damping performance and processability and form a high damping unit with stable performance for a wide temperature range. CONSTITUTION: A liquid homopolymer-containing high damping composition comprises a liquid homopolymer to a diene-based rubber as a base polymer, and filler. The mixing ratio of the liquid homopolymer is 31 parts by weight or more per 100.0 parts by weight of the diene-based rubber. The liquid homopolymer is selected from a liquid isoprene rubber and liquid butadiene rubber. The filler is one or more selected from a group consisting of a silica and carbon black. The silica has a BET specific surface area of 120-300 m^2 / g.

Description

technical field [0001] The present invention relates to a high damping composition which becomes a raw material for a high damping part which moderates or absorbs the transmission of vibrational energy. Background technique [0002] For example, in a wide range of fields such as buildings and bridges, production machinery, aircraft, automobiles, railway vehicles, computers and their peripheral equipment, household electrical equipment, and automobile tires, in order to alleviate or absorb vibration energy transmission, that is, A high-damping member including rubber or the like as a base polymer is used for vibration isolation, shock absorption, vibration damping, vibration prevention, and the like. [0003] In order to improve the damping performance by increasing the hysteresis loss when vibration is applied, that is, to efficiently and quickly attenuate the energy of the above-mentioned vibration, the above-mentioned high-damping member is generally made of the above-ment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L9/00C08K3/36C08K3/04F16F15/08E04B1/98
CPCC08K3/04C08K3/36C08K2201/006C08L9/00C08L23/22E04H9/02F16F15/04
Inventor 兵头建彦松谷雄一朗
Owner SUMITOMO RUBBER IND LTD