溶胶-凝胶法制备的PMMA/四配位硅杂化材料及其性能  

Preparation and Performances of PMMA/Tetra-Coordinate Silicon Hybrid Material Through Sol-Gel

作　　者：宋建华[1] 徐敏[1] 张建华[1] 董文[1] 

机构地区：[1]广州大学化学与化工学院化学系,广东广州510006

出　　处：《高分子材料科学与工程》2008年第1期128-130,134,共4页Polymer Materials Science & Engineering

基　　金：广州市教委资助项目(2035)

摘　　要：以无定形二氧化硅为起始原料,与乙二醇、氢氧化钾反应,生成高反应活性的五配位硅钾化合物,再与2-氯乙醇反应生成双羟基四配位硅化合物(DHTS)。并以DHTS为前驱体与甲基丙烯酸甲酯(MMA)、γ-(甲基丙烯酰氧基)丙基三甲氧基硅烷(KH-570)反应,用BPO引发聚合,在酸催化下通过溶胶-凝胶法制备了PMMA/四配位硅杂化材料。并用IR光谱表征了杂化材料的结构;同时研究了其硬度、透光率、热稳定性等问题。A highly active penta-coordinate silicon complex was prepared by the reaction of silica with ethylene glycol in the presence of potassium hydroxide. A double hydroxyl tetra-coordinate silicon was prepared by the reaction of this penta-coordinate silicon complex with 2-chloride ethanol. And the PMMA/tetra-coordinate silicon hybrid materials was prepared by the reaction of the double hydroxyl tetra：coordinate silicon compound with MMA, KH-570, using 13]70 as initiator and hydrolyzed by acid catalysis through Sol-Gel. The structure of hybrid materials had been characterized by FT-IR and the rigidity, light transmittance, thermal-stability of hybrid materials also had been researched.

关 键 词：溶胶-凝胶法 四配位硅 有机-无机杂化材料 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]