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Vulcanization-bonded laminate, and rubber composition for use in same

A technology for rubber and rubber layers, applied in the field of vulcanized adhesive laminates and chloroether rubber compositions, can solve the problems of coexistence of inability to adhere to a high level of operability, and achieve favorable manufacturing costs and long scorch time. , excellent adhesion effect

Active Publication Date: 2016-07-27
NICHIRIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this additive in chloroether-based rubber enables vulcanized bonding with fluorine-based rubber, but it is not possible to achieve both high-level adhesion and workability

Method used

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  • Vulcanization-bonded laminate, and rubber composition for use in same
  • Vulcanization-bonded laminate, and rubber composition for use in same
  • Vulcanization-bonded laminate, and rubber composition for use in same

Examples

Experimental program
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Effect test

Embodiment

[0073] Each component was blended in the amounts shown in Table 1, and kneaded with a kneader to obtain a fluororubber composition. A fluororubber sheet having a thickness of 2 mm was produced from the fluororubber composition using an 8-inch roll.

[0074] Table 1

[0075]

[0076] Fluorine rubber: DAI-ELG558 (manufactured by Daikin Industries, Ltd.: polyol vulcanized)

[0077] Carbon black: SEASTS (manufactured by Tokai Carbon Co., Ltd.)

[0078] Calcium hydroxide: CALDIC#2000 (manufactured by Ohmi Chemical Industry Co., Ltd.)

[0079] Magnesium oxide: MgO#150 (manufactured by Kyowa Chemical Industry Co., Ltd.)

[0080] Each component was blended in the amounts shown in Tables 2 and 3, and kneaded with a kneader to obtain a chloroether-based rubber composition. A chloroether-based rubber sheet having a thickness of 2 mm was produced from the chloroether-based rubber composition using an 8-inch roll.

[0081] Table 2

[0082]

[0083] table 3

[0084]

[0085]...

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Abstract

Provided is a laminate in which a fluororubber and an epichlorohydrin rubber are strongly vulcanization-bonded to each other. A rubber laminate in which an epichlorohydrin rubber layer and a fluororubber layer are vulcanization-bonded to each other, wherein the epichlorohydrin rubber layer comprises at least (a) magnesium oxide, (b) a polythiol-type vulcanizing agent, (c) at least one compound selected from 1,8-diazabicyclo(5,4,0)undecane-7, 1,5-diazabicyclo(4,3,0)nonene-5 and salts thereof, (d) at least one compound selected from an organic phosphonium salt and an organic ammonium salt and (e) maleic anhydride-modified polybutadiene, said rubber laminate being characterized in that the contents of the polythiol-type vulcanizing agent (b) and the maleic anhydride-modified polybutadiene (e) are 0.3 to 1.2 parts by weight and 0.3 to 1.5 parts by weight, respectively, relative to 100 parts by weight of the epichlorohydrin rubber.

Description

technical field [0001] The present invention relates to a vulcanized adhesive laminate of a chloroether-based rubber layer and a fluororubber layer and a chloroether-based rubber composition used therefor. Background technique [0002] Since fluororubber is excellent in heat resistance, oil resistance, ozone resistance, chemical resistance, etc., it has attracted attention as a material for fuel hoses and the like, but is expensive. Therefore, in order to maintain oil resistance and maintain flexibility, use is made of a laminated structure of fluororubber and chloroether-based rubber to reduce the amount of fluororubber used, and arrange the fluororubber side so that it is in contact with oil. Class medium side. [0003] However, since fluorine has a low surface energy and is difficult to adhere to other polymers, it is necessary to mix an additive for improving adhesion with the chloroether-based rubber. As such additives, the following additives have been proposed: 1,8-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B25/14B32B1/08F16L11/10
CPCB32B25/14B32B1/08B32B25/042B32B25/16B32B2250/02B32B2250/248B32B2307/3065B32B2307/56B32B2597/00F16L11/04C08L71/03C08L51/06C08K5/3442C08K5/50C08K5/36C08L19/00
Inventor 野村孝明东家慎二
Owner NICHIRIN CO LTD
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