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Friction transmission belt

A friction drive belt, V-ribbed belt technology, applied in the direction of drive belts, V-belts, belts/chains/gears, etc., can solve problems such as unresearched in detail, achieve excellent bending fatigue, suppress the generation of sliding noise, and suppress sliding noise Effect

Inactive Publication Date: 2008-01-02
BANDO CHEM IND LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in these documents, the use of ethylene-α-olefin elastomers in the compression rubber layer has not been studied in detail

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1～5、 comparative example 1

[0065] (Examples 1-5, Comparative Example 1, Comparative Example 2)

[0066] First, a rubber compound unvulcanized sheet for a compression rubber layer having a compound composition shown in Table 1 was manufactured. The values ​​of the mixed compositions in Table 1 are shown in "parts by mass". In addition, the commercially available items used are as follows.

[0067] Ethylene-propylene-diene rubber (EPDM):

[0068] Nordel IP 4640 (55% ethylene content, diene ENB, manufactured by DuPont Dow Elastomers)

[0069] Chloroprene rubber (CR): Neoprene GRT (sulfur-modified chloroprene rubber, manufactured by DuPont Dow Elastomers)

[0070] Carbon black: HAF carbon (manufactured by Mitsubishi Chemical Corporation)

[0071] Silica: Tokusil GU (made by Tokuyama Corporation)

[0072] Silane coupling agent: Si-69 (manufactured by Degussa Corporation)

[0073] Softener: Sunflex 2280 (paraffin oil, manufactured by Japan SUN Chemical Company)

[0074] A vulcanization aid: Stearic aci...

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Abstract

A friction transmission belt, which comprises a compressed rubber layer containing an ethylene-a-olefin elastomer, a short fiber and silica and having a single-layer structure. The friction transmission belt can inhibit a noise owing to the slip caused when the friction drive section of the belt is covered with water and has excellent flexural fatigue characteristics, and further can be manufactured by a simple and easy working process.

Description

technical field [0001] The present invention relates to friction transmission belts. Background technique [0002] In friction transmission belts used to transmit power for auxiliary driving of automobiles, the slipping sound generated during belt driving has been regarded as noise, and this noise has become a problem that needs to be improved in order to make automobiles quiet. One type of noise produced by the drive belt is the squeak when water enters the engine compartment and the belt gets wet. As a technique currently used to improve the sliding sound when the belt rib is wet, short fibers are mixed into the belt rib, or a water repellent is applied to the surface of the belt rib. [0003] However, for a power transmission belt with short fibers mixed in the belt ribs, the sliding noise when wet can be improved by using short fibers, but since the elastic modulus difference between the short fibers and rubber is very large, the At this time, the stress concentrates a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16G1/08F16G5/20F16G5/06
CPCF16G5/06F16G5/20F16G1/08
Inventor 尻池宽之吉田裕彦橘博之
Owner BANDO CHEM IND LTD
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