摘要
研究了Ti-Mg催化剂催化乙烯/1-丁烯的气相共聚合反应。常压下聚合动力学曲线为衰减型,催化效率10.2～11kg PE/gTi,产物密度0.905～0.922g/cm^3,Φ-100流化床共聚合(1.2MPa)催化效率137～173kgPE/gTi,产物特性粘度[η]、MI_(2.16)MFR_(10.0/2.16)分别为1.09～2.22、1.0～6.9、7.8～10.4,共聚单体中1-丁烯含量为17％～38％(体积百分数)时,共聚物熔点为117.0～121.8,结晶度22.9％～34.9％,密度0.914～0.939g/cm^3,支化度16.7～22.7。结果表明,共聚物熔点、结晶度、密度随共聚单体1-丁烯含量增加而降低,而支化度则相反。
The gas -phase copolymerization of ethylene/1 - butene with Ti -Mg catalyst was studied. It was found that as the 1 -butene content in the feed increased, the degree of branching raised while the melting point, crystallinity and density of the copolymers lowered.
出处
《合成树脂及塑料》
EI
CAS
1997年第4期10-13,34,共5页
China Synthetic Resin and Plastics
关键词
催化剂
气相共聚
结构
性能
共聚
乙烯
丁烯
Ti-Mg catalyst
gas -phase copolymerization
structure
property
