介孔分子筛增强聚双环戊二烯  

REINFORCING EFFECT OF MESOPOROUS MOLECULAR SIEVE ON POLYDICYCLOPENTADIENE

作　　者：陆昶[1] 刘宪俊[1] 陈权[1] 张玉清[1] 

机构地区：[1]河南科技大学化工与制药学院高分子科学与纳米技术校重点实验室,洛阳471003

出　　处：《高分子学报》2011年第1期63-69,共7页Acta Polymerica Sinica

基　　金：河南省教育厅自然科学基金(基金号2009A430008);河南省科技攻关资助项目(项目号092102210296);河南省杰出人才创新基金资助项目

摘　　要：分别采用介孔分子筛SBA-15原位聚合及SBA-15负载催化剂原位聚合的方法,制备聚双环戊二烯(PDCPD)/SBA-15复合材料.比较不同制备方法对PDCPD/SBA-15力学性能的影响,运用XRD、TEM、TG、SEM等研究了SBA-15的增强机理.研究结果表明,采用原位聚合的方法制备的复合材料,SBA-15孔道中的双环戊二烯(DCPD)单体难以发生聚合反应,生成PDCPD分子链,致使SBA-15与PDCPD界面作用力弱且发生团聚,导致复合材料的力学性能没有明显改善.采用SBA-15负载催化剂,原位聚合的方法制备的复合材料,PDCPD分子链可在SBA-15孔道大量生成,提高了PDCPD基体与SBA-15的界面作用力,阻止SBA-15团聚,使得复合材料的拉伸强度明显改善,在2%SBA-15添加量下,复合材料的拉伸强度较PDCPD提高24.5%,其热稳定性也有明显改善.The polydicyclopentadiene（PDCPD）/mesoporous molecular sieve SBA-15 composites were prepared by the methods of in situ polymerization and SBA-15 supported catalyst,in-situ polymerization.The mechanical performances of PDCPD/SBA-15 composites were studied.The reinforcing mechanism of mesoporous molecular sieve was investigated by XRD,TEM,TG,SEM,etc.The results showed that when the method of in situ polymerization was employed to prepare PDCPD/SBA-15 composites,the polymerization of dicyclopentadiene monomers was difficult to occur in the pores of SBA-15,causing that few molecular chains of PDCPD can form in the pores.The mechanical performances of composites improved weakly,compared with PDCPD,due to the weak interface compatibility between SBA-15 and PDCPD,and the conglomeration phenomenon of SBA-15 in PDCPD.The method of SBA-15 supported catalyst in situ polymerization is beneficial to the form of PDCPD molecular chains in the pores of SBA-15.The form of molecular chains in the pores can improve the interface interaction between SBA-15 surface and PDCPD molecular chains,prevent the conglomeration of SBA-15 particles in PDCPD,and enhance the tensile strength and heat-stability of composites greatly.Compared with PDCPD,the tensile strength of PDCPD/SBA-15 improves by 24.5% with 2% SBA-15 content.

关 键 词：聚双环戊二烯 介孔分子筛 负载 复合材料 增强 

分 类 号：O632.15[理学—高分子化学]