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Transmission belt

A technology of transmission belt and rubber layer, which is applied in the field of transmission belt to achieve the effect of improving durability

Active Publication Date: 2014-12-31
MITSUBOSHI BELTING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The inventors of the present invention conducted intensive studies to solve the above-mentioned problems, and as a result, found that by forming the adhesive rubber layer of the transmission belt from a vulcanized rubber composition containing a rubber component, fatty acid amide, and silica, it is possible to reduce the bending fatigue resistance without reducing the bending fatigue resistance. The present invention has been accomplished by preventing the peeling of the interface between the adhesive rubber layer and the inner rubber layer and the back rubber layer and improving durability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5 and comparative example 1～2

[0105] (formation of rubber layer)

[0106] The rubber compositions in Tables 1 to 2 (adhesive rubber layer) and Table 3 (inner rubber layer and back rubber layer) were kneaded using a known method such as a Banbury mixer, and the kneaded rubber was pressed from a press. The smooth roll is passed to produce a rolled rubber sheet (sheet for adhesive rubber layer, sheet for inner rubber layer, sheet for back rubber layer).

[0107] In Table 3, the material for the inner surface rubber layer and the material for the back rubber layer are set to the same rubber composition, rubber 1 is for medium-load applications, and rubber 2 is for high-load applications. Regarding compounding, rubber 2 has aramid short fibers, carbon black, and N,N'-m-phenylene bismaleimide in an increased amount compared to rubber 1, making the rubber composition harder and improving Modulus (lateral pressure resistance) fit.

[0108] In Table 1, Examples 4 to 8 have changed the amount of fatty acid amide (...

Embodiment 11 and 12

[0129] The physical properties of the vulcanized rubber were evaluated by changing the type of fatty acid amide. That is, the compounding of the rubber composition was the same as in Example 4 except that the type of fatty acid amide was changed. In Example 11, 2 parts by mass of fatty acid bisamide was compounded, and in Example 12, 2 parts by mass of fatty acid ester amide was compounded. The results of the physical properties of the vulcanized rubber are shown in Table 5 together with the results of Example 4 and Comparative Example 1.

[0130] [table 5]

[0131]

[0132] As can be seen from the results in Table 5, compared with Comparative Example 1 using stearic acid in Examples 4, 11, and 12 using fatty acid amide, hardness, 100% elongation stress, breaking strength, and tearing force all showed higher values. , The elongation at break of Examples 4 and 11 decreased slightly.

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Abstract

The present invention provides a transmission belt which is provided with: a core wire extending in the lengthwise direction of the belt; an adhesive rubber layer in contact with at least part of the core wire; a back surface rubber layer which is formed on one surface of the adhesive rubber layer; and an inner surface rubber layer which is formed on the other surface of the adhesive rubber layer and engages or makes contact with a pulley. The adhesive rubber layer is formed by a vulcanized rubber composition including a rubber component, a fatty acid amide and silica.

Description

technical field [0001] The present invention relates to transmission belts such as V-belts, ribbed belts, and flat belts, and more specifically, to transmission belts excellent in durability. Background technique [0002] Conventionally, friction transmission belts such as V-belts, ribbed belts, and flat belts, and meshing transmission belts such as toothed belts are known as transmission belts for transmitting power. In these power transmission belts, a core wire is buried in the rubber body along the belt length direction, and the core wire plays a role of transmitting power from a driving pulley to a driven pulley. Such a transmission belt is usually provided with an adhesive rubber layer in order to improve the adhesiveness between the core wire and the rubber. [0003] Patent Document 1 discloses a rubber V-shaped belt in which short fibers of high modulus of elasticity are arranged on the upper and lower sides of an adhesive rubber layer in which a cord is buried, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16G1/08C08K3/36C08K5/20C08L11/00C08L21/00F16G5/06F16G5/20
CPCC08K3/36C08K5/20F16G5/20F16G1/10F16G1/12F16G1/28F16G5/08F16G5/10C08K2201/006C08L11/00F16G1/21
Inventor 西山健高场晋石黑久登
Owner MITSUBOSHI BELTING LTD
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