Dependence of BCZ-208 catalyst polymerization performance on silane donor amount
Using cyclohexylmethyldimethoxysilane(Donor C)as the external electron donor,the performance changes of BCZ-208 catalyst in propylene polymerization in the Si/Ti range from 0 to 1.2 mol%were investigated.The results show that with the increase of Si/Ti ratio,the polymerization activity and hydrogen modulation performance of the catalyst gradually decrease,the isotacticity increases.These three properties are less affected when the silane addition amount increases.Meanwhile,the added amount of silane has no obvious effect on the bulk density and fine content of the polymer.Therefore,the BCZ-208 catalyst can be applied to a wider range of silane dosage and has better performance adjustability.
NETL
NSTL
万方数据
