POSS/PMMA纳米复合材料的制备及性能研究  

Preparation and properties of POSS/PMMA nanocomposites

作　　者：吕盼盼[1] 焦剑[1] 汪雷[1] 蔡宇[1] 刘蓬[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710129

出　　处：《粘接》2013年第8期49-52,共4页Adhesion

摘　　要：采用八乙烯基倍半硅氧烷(OV-POSS)通过原位聚合法制备了具有交联网状结构的POSS/PMMA纳米复合材料。通过FT-IR、DSC等方法对纳米复合材料的结构和性能进行了表征。结果表明,通过原位聚合法制备的POSS/PMMA纳米复合材料具有交联网状结构,POSS的引入能明显改善材料介电性能和热学性能,但当OV-POSS含量较高时,热学性能有所下降。当POSS的用量为0.6%时,POSS/PMMA纳米复合材料的介电常数从2.91降低至2.77,介电损耗从0.0088降低至0.0039,复合材料的Tg也上升了。The POSS/PMMA nanocomposites with cross-linked structure were prepared from octa-vinyl polyhedral oligomeric silsesquioxane （POSS） via in situ polymerization,and the FT-IR,DSC and other methods were used to characterize the structure and properties of the nanocomposites.The results show that the POSS/PMMA nanocomposites we have prepared have the cross-linked structure.The addition of POSS can significantly improve the dielectric properties and thermal properties of the nanocomposites,but the thermal properties of POSS/PMMA nanocomposites decrease with increasing content of POSS at high content. When the OV-POSS content is 0.6%,the dielectric constant is reduced from 2.91 to 2.77,and the dielectric loss is reduced from 0.0088 to 0.0039,the Tg of nanocomposites increases with increasing content of POSS.

关 键 词：POSS PMMA 介电性能 热性能 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]