钼基开环移位催化剂催化双环戊二烯聚合研究  

Study on the polymerization of dicyclopentadiene with molybdenumbased ring-opening metathesis polymerization catalysts

作　　者：刘虎[1] 姚大虎[1] 马盼盼[1] 赫玉欣[1] 张玉清[1] 

机构地区：[1]河南科技大学高分子科学与纳米技术重点实验室,河南洛阳471003

出　　处：《热固性树脂》2012年第5期36-39,共4页Thermosetting Resin

基　　金：河南省杰出人才创新基金(074200510019);河南科技大学校青年基金(2010QN0013)资助

摘　　要：分别用对甲基苯酚、壬基酚、2,6-二叔丁基-4-甲基苯酚、2,4,6-三溴苯酚和2,4-二硝基苯酚与五氯化钼(MoCl5)反应,制备出系列用于双环戊二烯(DCPD)开环移位聚合的钼-酚催化剂。考察了不同结构催化剂的活性及其在不同条件下对催化DCPD开环聚合的影响。以红外光谱和示差扫描量热分析表征了聚合产物的结构和性能。结果表明,产物中钼-对甲基苯酚的活性最高,其催化DCPD聚合的单体转化率为98.07%,交联度为90.44%。同时发现钼-酚催化剂催化DCPD聚合的凝胶时间随着Mo、Et2AlCl物质的量的增加和温度的升高而减小,而单体转化率和交联度则先增大后减小。The series Mo - phenol catalysts for ring - opening metathesis polymerization（ROMP） of dicyclopenta- diene （DCPD） were prepared by the reaction of p - cresol, nonylphenol, 2, 6 - di - tert - butyl - p - cresol, 2, 4, 6 - tribromophenol and 2, 4 - dinitrophenol with MoCl5. The activity of catalysts with different structures and the influences on the polymerization of DCPD under different conditions were investigated. The structure and prop- erties of polymerization product were chatacterized by FT- IR and DSC. The results showed that MoCl5 -p -cre- sol catalyst had the highest activity among the five catalysts and the monomer conversion was 98.07% and crosslinking degree was 90.44%. The gel time of DCPD polymerization catalyzed by MoCl5 -p - cresol was short- ened and the monomer conversion and crosslinking degree were increased first and then decreased with the incres- ing of temperature and the number of moles of Mo and Et2AlCl.

关 键 词：双环戊二烯 开环移位聚合 催化剂 五氯化钼 对甲基苯酚 单体转化率 交联度 凝胶时间 

分 类 号：TQ316.3[化学工程—高聚物工业]