Reaction system for preparing polar ethylene copolymer, application of reaction system, polar ethylene copolymer and preparation method of polar ethylene copolymer

The invention relates to the field of catalysis and olefin polymerization, and discloses a reaction system for preparing a polar ethylene copolymer, which is characterized in that the reaction system comprises: a) at least one metallocene compound; b) at least one alkylaluminoxane; c) ethylene; d) a monomer as shown in a formula I; e) at least one organoaluminum compound; # imgabs0 #, wherein the metallocene compound has a structure as shown in a formula II and/or a formula III; the reaction system has high polymerization activity, high molecular weight and comonomer content can be prepared, and the prepared copolymer has the performance and structure characteristics of cycloolefin copolymerization and polar monomer copolymer, and has good heat resistance, surface wettability and barrier property. 本发明涉及催化和烯烃聚合领域，公开了一种制备极性乙烯共聚物的反应体系，其特征在于，所述反应体系包括：a)至少一种茂金属化合物；b)至少一种烷基铝氧烷；c)乙烯；d)式I所示的单体；e)至少一种有机铝化合物；#imgabs0#所述茂金属化合物具有式II和/或式III所示的结构；#imgabs1#该反应体系具有高的聚合活性，能够制得具有高的分子量以及共聚单体含量，并且制得的共聚物兼具环烯烃共聚合与极性单体共聚物的性能结构特点，具有