| 摘要 |
This disclosure relates to a vulcanizable layered composition comprising at least two layers and at least one tie layer. The first of the two layers comprises a fluid permeation prevention layer and the second comprises at least one high diene rubber. The tie layer comprises, a mixture, in parts by weight relative to 100 weight parts of rubber, of suitable amounts of: (1) epoxidized natural rubber; (2) at least one high diene elastomer; (3) at least one filler; (4) least one tackifier; and (5) a rubber curing system. The fluid permeation prevention layer preferably comprises suitable amounts of: (A) at least one thermoplastic engineering resin component, preferably one or more nylon resins; and (B) at least one elastomer component, preferably a brominated isobutylene p-methylstyrene copolymer/and where the total amount of (A) and (B) is not less than 30% by weight, and wherein (B) is dispersed in a vulcanized or partially vulcanized state, as a discontinuous phase, in a matrix of component (A).
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