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Rubber composition and rubber belt

A technology of rubber composition and rubber belt, which is applied in transmission belts, V-belts, belts/chains/gears, etc., can solve problems such as failure to fully improve flex resistance, and achieve excellent mechanical properties and improved mechanical properties

Inactive Publication Date: 2010-10-06
BANDO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although such a rubber composition can improve mechanical properties such as breaking strength and elongation at break of a rubber molded article molded from the composition, it has not been able to sufficiently improve mechanical properties such as flex resistance.

Method used

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  • Rubber composition and rubber belt
  • Rubber composition and rubber belt
  • Rubber composition and rubber belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] (Preparation of rubber composition)

[0097]

[0098] As the ethylene / α-olefin copolymer, an ethylene / propylene / diene copolymer (hereinafter also referred to as EPDM) can be used. In addition, EPDM containing ethylidene norbornene (hereinafter also referred to as ENB) as a diene was used. The details of the ethylene / α-olefin copolymer used are as follows.

[0099] ・EPDM (manufactured by Dow Chemical Corporation, trade name "NORDEL IP 4725P")

[0100] : 100 parts by mass

[0101] Ethylene content 70% by mass, ENB content 5% by mass,

[0102] Mooney viscosity ML 1+4 (125°C) 25

[0103]

[0104] ·Organized montmorillonite: 10 parts by mass

[0105] Dimethyldi(octadecyl)ammonium treatment of montmorillonite

[0106](Trade name "Esbein NX" manufactured by Shiichiju Corporation), organic matter content 41.8% by mass

[0107]

[0108] · Carbon black (manufactured by Tokai Carbon Co., Ltd., trade name "Syst 3"): 30 parts by mass of HAF, arithmetic mean...

Embodiment 2

[0140] A rubber composition and a V-ribbed belt of Example 2 were produced in the same manner as in Example 1, except that the compounding amount of the organic montmorillonite in the rubber composition for a compression layer was 20 parts by mass.

Embodiment 3

[0142] A rubber composition and a V-ribbed belt of Example 3 were produced in the same manner as in Example 1, except that the compounding amount of the organic montmorillonite in the rubber composition for a compression layer was 30 parts by mass.

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Abstract

Disclosed is a rubber composition which is remarkably improved in mechanical characteristics. Also disclosed is a rubber belt having excellent mechanical characteristics. Specifically disclosed is a rubber composition containing a rubber component including an ethylene / alpha-olefin copolymer and an organized clay mineral which is organized by organic ammonium ions. The ethylene content in the ethylene / alpha-olefin copolymer is 60-85% by mass, and the rubber component has a Mooney viscosity of 10-55 at 125 DEG C. The organized clay mineral is blended in an amount of 6-30 parts by mass per 100 parts by mass of the rubber component. Also specifically disclosed is a rubber belt which is produced by using such a rubber composition.

Description

technical field [0001] The present invention relates to a rubber composition and a rubber belt using the rubber composition. Background technique [0002] Conventionally, it has been known that mechanical properties such as breaking strength and elongation at break of rubber moldings can be improved by using a rubber composition comprising a rubber component containing an ethylene / α-olefin copolymer and an organized clay mineral that is excellent in heat resistance and the like. characteristic. [0003] For example, in Patent Document 1, it is proposed to use a rubber composition comprising an ethylene / α-olefin copolymer as a rubber component, a montmorillonite organically organized with octadecylamine, and an epoxy compound, and the rubber composition can be improved. The mechanical properties of the rubber moldings produced. In addition, in Patent Document 2, it is proposed that by further adding a vulcanizing agent and a vulcanization accelerator to a rubber composition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K9/04F16G1/06F16G5/04F16G5/20
CPCF16G1/06C08L23/16F16G5/04C08L23/0815C08L2666/02
Inventor 山田智之
Owner BANDO CHEM IND LTD