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Cord for rubber reinforcement, process for producing the same, and rubber product made with the same

一种橡胶增强、制造方法的技术，应用在橡胶增强用软线增强的橡胶制品领域，能够解决覆盖层形成工序繁琐、制造成本高等问题，达到廉价且容易耐热性和抗挠曲疲劳性、改善胶粘性、改善操作环境的效果

Inactive Publication Date: 2008-07-30
NIPPON SHEET GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in this cord for rubber reinforcement, since the covering layer formed on the reinforcing fiber has a two-layer structure, there is a problem that the forming process of the covering layer is cumbersome and the manufacturing cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] The first embodiment demonstrates the rubber-reinforced cord of the present invention and its manufacturing method. By the method of the present invention, a coating liquid (aqueous adhesive) containing a latex and a vulcanization aid is applied to the reinforcing fiber. 50% by mass or more of the solvent (liquid component) of the coating liquid is water. Subsequently, by drying and curing the coating liquid, a covering film is formed on the reinforcing fiber.

[0016] The reinforcing fiber used in the present invention is embedded in the matrix rubber, and if it is a fiber that improves its shape stability or strength, its type or shape is not particularly limited. For the reinforcing fiber, for example, polyvinyl alcohol fiber represented by glass fiber and vinylon fiber, polyester fiber, so-called nylon or aramid (aramid) polyamide fiber, carbon fiber, or polyester fiber can be used. Phenylbenzoxazole fiber, etc. Among them, glass fibers excellent in heat resistance and ...

Embodiment approach 2

[0032] In Embodiment 2, the rubber product of the present invention will be described. The rubber product of the present invention includes a matrix rubber (hereinafter, sometimes referred to as matrix rubber (A)) and a reinforcing cord embedded in the matrix rubber (A). In addition, the cord for rubber reinforcement is the cord for rubber reinforcement of the present invention described in the first embodiment.

[0033] As the matrix rubber (A), a mixed rubber of hydrogenated nitrile rubber (H-NBR / ZDMA) and hydrogenated nitrile rubber (H-NBR) dispersed with zinc methacrylate can be used as the main component (50% by mass or more) Rubber. The mixing mass ratio of H-NBR and H-NBR / ZDMA is, for example, in the range of [H-NBR] / [H-NBR / ZDMA]=95 / 5 to 5 / 95. The matrix rubber (A) may contain other rubber as long as it contains the above-mentioned mixed rubber as a main component. As H-NBR and H-NBR / ZDMA, known or commercially available rubber can be used.

[0034] The rubber product of th...

Embodiment 1

[0039] Three glass fibers (a bundle of 200 glass filaments composed of E glass and an average diameter of 9 μm) were bundled, and a coating liquid composed of the components shown in Table 1 below was applied by a known method. Next, the glass fiber coated with the coating liquid was dried in a drying oven at 150°C for 1 minute to form a cover film.

[0040] Table 1

[0041] Ingredients

Ratio

H-NBR latex (solid content 40% by mass) ( * 1)

100 parts by mass

Bismaleic anhydride imine water dispersion (solid content 50% by mass)

50 parts by mass

[0042] ( * 1) Zetpol Latex (manufactured by ZEON Co., Ltd.)

[0043] Next, the glass fibers forming the covering film were twisted at a ratio of 8 times / 10 cm, and 11 of them were then bundled together, and further twisting was performed at a ratio of 8 times / 10 cm. In this way, a cord for rubber reinforcement is obtained. The ratio of the cover film to the total mass of the rubber reinforcement c...

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Abstract

A reinforcing cord for rubber reinforcement of the present invention includes a reinforcing fiber and a coating film formed on the reinforcing fiber. The coating film is a film formed by drying a coating liquid containing a rubber latex and a vulcanizing auxiliary, and the coating liquid includes a medium that contains at least 50 weight % of water. This reinforcing cord for rubber reinforcement exhibits high adhesiveness to a matrix rubber containing, as its main component, a mixed rubber of a hydrogenated nitrile rubber containing zinc dimethacrylate dispersed therein and a hydrogenated nitrile rubber and therefore can be manufactured easily.

Description

[0001] This application is a divisional application. The application number of the parent application: 2003380104748.6, the filing date: 2003.12.1, the title of the invention: rubber reinforcing cord and its manufacturing method, and rubber products using it Technical field [0002] The present invention relates to a cord for rubber reinforcement embedded in a rubber product as a reinforcing material, and a method of manufacturing the cord. In addition, the present invention also relates to a rubber product reinforced with a cord for rubber reinforcement. Background technique [0003] In order to improve the strength and durability of rubber products such as rubber belts and rubber tires, it is usually done to embed glass fibers or chemical fibers as reinforcing fibers in the matrix rubber. However, generally, the adhesiveness between the reinforcing fiber itself and the rubber is low. For this reason, when the surface of the reinforcing fiber is not processed and embedded in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/693D06M13/418D06M11/74C08L15/00C08K5/098C08K9/04C08J5/06D07B1/16C08K7/02C08K9/08D06M11/00D06M11/50D06M13/203D06M13/322
CPCC08K9/08D06M2200/50C08K5/098D06M13/203D06M15/693C08K7/02D06M11/50C08L15/005D06M11/74C08L15/00D07B1/16
Inventor 秋山光晴
Owner NIPPON SHEET GLASS CO LTD
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