Metal and composite material made of the metal and rubber

B - Operations – Transporting – 32 – B

Patent

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13/19

B32B 15/06 (2006.01)

Patent

CA 1321285

ABSTRACT The present invention relates to a metal and a composite material made of the metal and rubber for tires, hoses, conveyor belts, or the like. A high degree of adhesion is achieved between metal and rubber. The metal member is plated with a copper/zinc/nickel ternary alloy plating comprising 60 to 75 per cent by weight of copper, 4 to 14 per cent by weight of nickel and the remainder of zinc. The content of nickel is not more than 4 per cent by weight at the outer surface of the plating and increases gradually in depth from the outer surface to the depth of 50 angstroms, and being about 4 to 14 per cent by weight in the deeper area. The composite material is produced by vulcanizing to attach to the metal member, a rubber comprising 100 parts by weight of natural rubber or synthetic isoprene rubber, 1 to 8 parts by weight of sulfur, and either not more than 6 parts by weight of a cobalt salt of an organic acid or not more than 20 parts by weight of silica, not more than 5 parts by weight of resorcin and not more than 5 parts by weight of hexamenthylenetetramine as an adhesion accelerator.

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