A rubber laminate wherein a rubber layer (1) consisting of the following rubber compound (a) and a rubber layer (2) consisting of the following rubber compound (b) have been strongly bonded to each other by vulcanization:
(a) a rubber compound consisting essentially of 100 parts by weight of an acrylic blend rubber, 20-30 parts by weight of a plasticizer comprising at least a phosphate type plasticizer and, as a vulcanizing agent, a diamine carbamate compound and 1-orthotolylbiguanide, the acrylic blend rubber consisting of (I) an acrylic rubber composed of
(A) 7.0-69.9% by weight of an alkyl acrylate,
(B) 30.0-70.0% by weight of an alkoxy-substituted alkyl acrylate,
(C) 0.1-3.0% by weight of an epoxy group-containing ethylenically unsaturated compound, and
(D) 0-20.0% by weight of other ethylenically unsaturated compound copolymerizable with the (A), (B) and (C) componentsand (II) a vinylidene fluoride resin, the weight ratio of the acrylic rubber (I)/the vinylidene fluoride resin (II) in the acrylic blend rubber being 85/15 to 75/25,
(b) a rubber compound consisting essentially of 100 parts by weight of an acrylic rubber (III) and 20-40 parts by weight of a plasticizer [the proportion of the plasticizer is equal to or larger than the proportion of the plasticizer in the rubber compound (a)], the acrylic rubber (III) being composed of
(E) 1.0-49.9% by weight of an alkyl acrylate,
(F) 50.0080.0% by weight of an alkoxy-substituted alkyl acrylate,
(G) 0.1-3.0% by weight of an epoxy group-containing ethylenically unsaturated compound, and
(H) 0-20.0% by weight of other ethylenically unsaturated compound copolymerizable with the (E), (F) and (G) components[the proportion of the (F) component is equal to or larger than the proportion of the (B) component in the acrylic rubber (I)].
The above laminate is superior in flexibility and has a high interlaminar strength. The laminate is also superior in heat resistance, sour gasoline resistance and resistance to alcohol-containing gasoline and accordingly is highly suited for use as a material for fuel hoses of automobiles.
一种橡胶层压板,其中由以下橡胶化合物(a)组成的橡胶层(1)和由以下橡胶化合物(b)组成的橡胶层(2)已通过
硫化牢固地粘合在一起:
(a) 一种橡胶复合物,主要由 100 份(按重量计)
丙烯酸混合橡胶、20-30 份(按重量计)
增塑剂组成,
增塑剂至少包括
磷酸盐型
增塑剂,以及作为
硫化剂的
氨基甲酸二胺化合物和 1-正
甲苯基双胍,
丙烯酸混合橡胶包括 (I) 一种
丙烯酸橡胶,由以下成分组成
(A) 7.0-69.9%(重量百分比)
丙烯酸烷基酯、
(B) 30.0-70.0%(重量)的烷氧基取代的
丙烯酸烷基酯、
(C) 0.1-3.0%(重量百分比)的含环氧基的
乙烯基不饱和化合物,和
(D) 0-20.0%(重量)可与(A)、(B)和(C)组分共聚的其他
乙烯基不饱和化合物和 (II)
偏氟乙烯树脂,
丙烯酸混炼橡胶(I)/
偏氟乙烯树脂(II)在
丙烯酸混炼橡胶中的重量比为 85/15 至 75/25、
(b) 主要由 100 份(重量)
丙烯酸橡胶(III)和 20-40 份(重量)
增塑剂组 成的橡胶复合物[
增塑剂的比例等于或大于橡胶复合物(a)中
增塑剂的 比例],
丙烯酸橡胶(III)由以下成分组成
(E) 1.0-49.9%(重量百分比)的
丙烯酸烷基酯、
(F) 50.0080.0%(重量百分比)的烷氧基取代的
丙烯酸烷基酯、
(G) 0.1-3.0%(重量百分比)含环氧基的
乙烯基不饱和化合物,及
(H) 0-20.0%(重量)可与(E)、(F)和(G)组分共聚的其他
乙烯基不饱和化合物[(F)组分的比例等于或大于
丙烯酸橡胶(I)中(B)组分的比例]。
上述层压板具有优异的柔韧性和较高的层间强度。该层压材料的耐热性、耐酸性汽油性和耐含
酒精汽油性也很出色,因此非常适合用作汽车燃油软管的材料。