摘要
研究了Ｎｉ（Ｎａｐｈ）２－Ａｌ（ｉＢｕ）３－ＢＦ３·ＯＥｔ２－Ｅｔ２Ｏ体系催化丁二烯的聚合动力学，考察了该体系的动力学曲线、速度方程、聚合度，测定了催化剂利用率、活性中心浓度等动力学参数。聚合速率对单体浓度呈一级关系，表观活化能为４１．０ｋＪ／ｍｏｌ，催化剂利用率约为７．９％。
The kinetics of butadiene polymerization with Ni(naph)2-Al(iBu)3-BF3OEt2-Et2O catalytic system was investigated.The results revealed that the system behaved as a kind of polymeric system with quick initiation,successive propagation and no termination.In the incipient period of polymerization,the order of polymeric velocity to monomer concentration was 1.The apparent activation energy was 41.0kJ/mol;the efficiency of catalyst was about 7.9%.
出处
《弹性体》
CAS
1998年第4期7-11,共5页
China Elastomerics
关键词
镍
催化剂
聚丁二烯
动力学
聚合
橡胶
nickel catalyst
butadiene polymerization
kinetics of polymerization
