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    • 95. 发明授权
    • Fluoroelastomer compositions containing a tetraalkylammonium halide and
vulcanization accelerator
    • 含有四烷基卤化铵和硫化促进剂的氟弹性体组合物
    • US4925892A
    • 1990-05-15
    • US368086
    • 1989-06-19
    • David L. TabbJanet M. Wilson
    • David L. TabbJanet M. Wilson
    • C08K5/13C08K5/132C08K5/19C08K5/50
    • C08K5/19C08K5/13C08K5/132C08K5/50
    • A fluoroelastomer composition that has enhanced adhesion to metal when cured which comprises:(a) an elastomeric copolymer of vinylidene fluoride and at least one other fluorinated monomer,(b) a vulcanization accelerator that is a quaternary phosphonium compound,(c) a crosslinking agent selected from the group consisting of a bisphenol or a polyhydroxy phenol of the formula: ##STR1## where R is H or an alkyl group or an aryl group and R' is an alkyl group or an aryl group, and(d) 0.02-0.8 weight percent based on the weight of the elastomeric copolymer of a metal adhesion promoter that is a tetraalkylammonium halide where each alkyl group contains 1-10 carbon atoms and the halide is a chloride, bromide or iodide. When cured in contact with metal the fluoroelastomer composition forms a strong bond with the metal surface.
    • 一种含氟弹性体组合物,其在固化时具有增强的与金属的粘合性,其包含:(a)偏二氟乙烯与至少一种其它氟化单体的弹性体共聚物,(b)作为季鏻化合物的硫化促进剂,(c)交联剂 选自下式的双酚或多羟基苯酚:其中R是H或烷基或芳基,R'是烷基或芳基,和(d)0.02-0.8 基于弹性体共聚物的重量百分数,金属粘合促进剂是四烷基卤化铵,其中每个烷基含有1-10个碳原子,卤化物是氯化物,溴化物或碘化物。 当与金属接触固化时,含氟弹性体组合物与金属表面形成牢固的结合。