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考察了将茂金属载体催化剂SiO2 MAO Et(Ind) 2 ZrCl2 用于乙烯与苯乙烯的共聚合反应 .在反应时间为 3 0min ,反应温度为 40℃ ,n(Al) n(Zr)为 3 0 0 ,浸渍液茂锆浓度为 2 .17× 10 - 6 mol L的条件下 ,研究了单体量的配比对聚合活性及聚合物物性的影响 .结果表明 ,随单体量配比的增大 ,共聚活性降低 ,共聚物的平均相对分子质量、熔点下降 ,共聚物中苯乙烯链节的物质的量增加 ,产物为无规共聚物
The copolymerization of ethylene and styrene with metallocene catalyst SiO2 MAO Et (Ind) 2 ZrCl2 was investigated. The reaction conditions were as follows: the reaction temperature was 40 ℃, the reaction temperature was 40 ℃, the molar ratio of n (Al) n (Zr) 0 and the impregnation concentration of zirconocene was 2.17 × 10-6 mol L, the effects of the ratio of monomers on the polymerization activity and the physical properties of the polymer were studied. The results showed that with the increase of monomer ratio Large, copolymerization activity decreased, the average molecular weight of the copolymer, the melting point decreased, the amount of styrene chain copolymer material increases, the product is a random copolymer