A fluoroelastomer composition comprising (a) a fluoroelastomer comprising vinylidene fluoride units and units of at least one other fluorine-containing monomer copolymerizable with vinylidene fluoride, said monomer containing 2-7 carbon atoms and containing at least as many fluorine atoms as carbon atoms, and (b) a phosphonate accelerator for curing the fluoroelastomer having the formula:
where R, R₁ and R₂ independently represent an alkyl radical of from 1-8 carbon atoms, a phenyl radical, a phenyl radical substituted with an alkyl group of 1-4 carbon atoms or an aralkyl radical having from 7-13 carbon atoms such fluoroelastomer composition substantially may reduces mold fouling during curing.
一种
氟弹性体组合物,包括(a)一种
氟弹性体,该
氟弹性体由
偏氟乙烯单体单元和至少一种可与
偏氟乙烯共聚的其他含
氟单体单元组成,所述单体含有 2-7 个碳原子,并含有至少与碳原子数量相同的
氟原子;以及(b)一种用于固化该
氟弹性体的
膦酸盐
促进剂,其式为
其中 R、R₁ 和 R₂ 独立地代表 1-8 个碳原子的烷基、苯基、被 1-4 个碳原子的烷基取代的苯基或具有 7-13 个碳原子的芳烷基,这样的
氟橡胶组合物可大大减少固化过程中的模具污垢。