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Acrylonitrile-butadiene rubber composition and laminate including said composition layer

A technology of rubber composition and butadiene, which is applied in the direction of rubber layered products, synthetic resin layered products, layered products, etc., can solve the problems of insufficient bonding strength and insufficient gas permeability resistance, etc.

Active Publication Date: 2020-10-27
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, depending on the application, the gas permeation resistance of a single NBR layer may not be sufficient, so for example, it has been proposed to laminate an NBR layer and an ethylene-vinyl alcohol copolymer layer with better gas barrier properties (Patent Document 1 )
[0004] However, although an attempt was made to simply laminate the NBR layer and the ethylene-vinyl alcohol copolymer layer, it was found that the adhesive strength was still insufficient.

Method used

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  • Acrylonitrile-butadiene rubber composition and laminate including said composition layer
  • Acrylonitrile-butadiene rubber composition and laminate including said composition layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] (Preparation of NBR composition)

[0110] As the first stage, a BB-2 Banbury mixer (manufactured by Kobe Steel) was used to masticate the above-mentioned NBR for 30 seconds, and then in it, 5 parts by mass relative to 100 parts by mass of NBR were oxidized Zinc (manufactured by Inoue Lime Industry Co., Ltd.), 40 parts by mass of FEF carbon black (Asahi #60UG, manufactured by Asahi Carbon Co., Ltd.), and 1 part by mass of stearic acid were kneaded at 140°C for 2 minutes. Then, the piston was raised, cleaning was performed, and kneading was further performed for 1 minute, and the mixture was discharged at about 150°C to obtain the first-stage complex.

[0111] Next, as the second stage, the complex obtained in the first stage was wound on an 8-inch roll (manufactured by Japan Roll Co., Ltd., the surface temperature of the front roll was 50°C, the surface temperature of the rear roll was 50°C, and the Rotation speed 16rpm, the rotation speed of the rear roller 18rpm), 0.7 part...

Embodiment 2

[0123] Except having used EVA-1 instead of the modified EVA used in Example 1, it carried out similarly to Example 1, and obtained the laminated body. The evaluation results are shown in Table 1.

Embodiment 3

[0127] Except that instead of Nocceler NS-P and sulfur used in Example 1, a 40% dicumyl peroxide masterbatch (DCP-40C, manufactured by NOF Corporation) was used in the same manner as in Example 1, a laminate was obtained. body. The evaluation results are shown in Table 1.

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Abstract

The present invention addresses the problem of developing: an NBR composition having excellent adhesive strength with an ethylene-vinyl acetate copolymer saponified substance layer; and a laminate having excellent adhesive strength with an NBR layer and an ethylene-vinyl acetate copolymer saponified substance layer. The present invention relates to: an acrylonitrile-butadiene rubber composition characterized by including an acrylonitrile-butadiene rubber and 0-50 parts by mass of silane-modified ethylene-vinyl acetate copolymer with respect to 100 parts by mass of said acrylonitrile-butadienerubber; and a laminate characterized in that an acrylonitrile-butadiene rubber layer including said composition, and an ethylene-vinyl acetate copolymer saponified substance layer are laminated with an ethylene-vinyl acetate copolymer layer therebetween.

Description

Technical field [0001] The present invention relates to an acrylonitrile-butadiene rubber (NBR) composition having an improved bonding strength with an ethylene-vinyl acetate copolymer saponified layer and the combination of the composition layer and an ethylene-vinyl acetate copolymer saponified layer Laminated body. Background technique [0002] In automobiles, industrial machinery, construction machinery, motorcycles, agricultural machinery, etc., radiator hoses for cooling engines, drain hoses for radiator overflow boxes, heater hoses for indoor heaters, and air conditioning drain hoses are installed , Wiper hoses, roof drain hoses, protection hoses and other hoses. These hoses use NBR with good oil resistance, heat resistance, and gas permeability resistance. [0003] However, depending on the application, the gas permeability resistance of a single NBR layer may be insufficient. Therefore, for example, a proposal has been made to laminate an NBR layer and an ethylene-vinyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02B32B25/08B32B27/30C08F263/04C08L31/04
CPCC08F263/04C08F8/42B32B2270/00B32B27/306B32B2250/02B32B2264/104B32B25/02B32B25/08B32B2307/732B32B5/18B32B2264/108B32B2266/0207B32B25/16B32B27/065B32B2264/102B32B2597/00B32B2250/24C08F210/02C08L9/02C08L23/26C08L23/0853C08F230/085C08L51/003C08L31/04B32B27/32B32B27/18C08K5/14B32B1/08B32B2250/242B32B2307/7242B32B2319/00B32B2323/04B32B2331/04C08L23/06C08L2201/14C08L2205/02
Inventor 菊地义治市野光太郎
Owner MITSUI CHEM INC
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