介孔分子筛/聚双环戊二烯复合材料的制备  

Preparation of mesoporous-molecular-sieve/polydicyclopentadiene composites

作　　者：陆昶[1] 黄新辉[1] 赫玉欣[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：《复合材料学报》2012年第2期65-72,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51003024);河南省教育厅自然科学基金(2009A430008);河南省科技攻关资助项目(092102210296)

摘　　要：将负载催化剂的SBA-15型介孔分子筛(方法1)、偶联剂表面改性的SBA-15(方法2)、偶联剂表面改性后负载催化剂的SBA-15(方法3),采用原位聚合法分别制备了SBA-15/聚双环戊二烯(PDCPD)复合材料。研究了不同制备方法对SBA-15/PDCPD力学性能的影响。结果表明,对于方法2,虽然偶联剂改性SBA-15可提高与PDCPD界面作用力,但由于分子筛孔道中的双环戊二烯(DCPD)单体难以发生聚合反应,导致复合材料的力学性能较PDCPD没有明显改善。采用方法1及方法3可使PDCPD分子链在SBA-15孔道中生成,改善了PDCPD基体与SBA-15的界面作用力,使复合材料的力学性能明显改善。采用方法1,SBA-15/PDCPD质量比为2∶100时,复合材料拉伸强度较PDCPD提高了24.5%,弯曲强度提高了24%。采用方法3制备的复合材料中偶联剂分子占据了SBA-15孔道空间,导致孔道中生成聚合物分子链数量较方法1少,使其力学性能提高幅度低于方法1,但优于方法2。The mesoporous molecular sieve（SBA-15）/polydicyclopentadiene（PDCPD） composites were prepared by in-situ polymerization with SBA-15 supported catalyst（method 1）,SBA-15 modified by coupling agent（method 2）,modified SBA-15 supported catalyst（method 3）,respectively.The effect of preparing methods on mechanical performances of SBA-15/PDCPD was investigated.The results show that for the SBA-15/PDCPD composites prepared by method 2,although modified SBA-15 can improve the interface interaction between SBA-15 and PDCPD matrix,the polymerization of dicyclopentadiene（DCPD） monomer is difficult to occur in the pores of SBA-15,causing the mechanical performances of composites improve weakly,compared with PDCPD.Method 1 and method 3 applied to prepare SBA-15/PDCPD composites are 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 and PDCPD matrix,enhancing the mechanical performances of composites greatly.Compared with PDCPD,the tensile strength and bending strength of SBA-15/PDCPD prepared by method 1 increase by 24.5% and 24% when the mass ratio of SBA-15/PDCPD is 2∶100,respectively.For the composites prepared by method 3,the quantity of PDCPD molecular chains formed in the pores of SBA-15 is smaller than that of method 1 due to the SBA-15 pores occupied by coupling agent molecule,resulting that the mechanical performances is lower than that of method 1,but higher than that of method 2.

关 键 词：聚双环戊二烯 介孔分子筛 负载 偶联剂 复合材料 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]