高氯氯化聚乙烯对CR与MMA接枝共聚合的影响

Effect of chlorinated polyethylene on graft copolymerization of methyl methacrylate onto polychloroprene

以甲苯为溶剂，在９０℃条件下，研究了１０份氯含量为５７％的高氯氯化聚乙烯（ＨＣＰＥ）对１００份粘接型氯丁橡胶与７５份甲基丙烯酸甲酯（ＭＭＡ）接枝共聚合的影响。结果表明，该体系与无ＨＣＰＥ体系相比，ＭＭＡ转化率约提高４０％，产物接枝效率约高５０％，接枝度约高９０％。产物含有较高相对分子质量的级分，相对分子质量分布较宽，并且有较好的物理机械性能和较高粘接强度。

The effect of chlorinated polyethylene(10 phr)with chlorine content 57% on the graft copolymerization of methyl methacrylate (75 phr)onto adhesive polychloroprene was studied with toluene as solvent at 90 ℃.The result showed that the reaction system increased the conversion of methyl methacrylate about 40%,graft efficiency about 50% and graft degree about 90%,in comparison with the system of no chlorinated polyethylene.The graft polymer had higher relative molecular mass fraction,wider relative molecular mass distribution,better mechanical properties and adhesive strength.