氯化无规聚丙烯在庚烷和二氯甲烷的混合溶剂中,以一氯二乙基铝为催化剂,与苯乙烯进行阳离子接枝共聚反应,接枝效率较高,接枝共聚产品用丙酮和丁酮进行分离。本文研究了影响接枝效率的各种因素,通过红外、核磁和GPC等方法对接枝共聚物的结构进行了表征,计算了接枝共聚物中聚苯乙烯含量、支链长度和支链点数。接枝后的无规聚丙烯的抗张强度有很大提高。 Chlorinated random polypropylene in a mixed solvent of heptane and methylene chloride, diethylaluminum as a catalyst, and cationic graft copolymerization of styrene, grafting efficiency, the graft copolymer with acetone And butanone for separation. In this paper, various factors affecting the graft efficiency were studied. The structure of the graft copolymer was characterized by IR, NMR and GPC. The content of polystyrene, the length of branches and the number of branches . The tensile strength of the grafted random polypropylene is greatly increased.