非碳热法合成含硅聚合物及其结构表征  

Synthesis of Silicon containing Polymer by Non-carbothermal Method from SiO_2 and Characterization of Its Structure

作　　者：宋建华[1] 王小芳[2] 龚克成[3] 

机构地区：[1]广州大学桂花岗校区,广州510405 [2]天水师范高等专科学校,天水741000 [3]华南理工大学材料学院高分子结构改性研究室,广州510640

出　　处：《有机硅材料》2001年第3期6-10,共5页Silicone Material

基　　金：国家自然科学基金资助项目 !基金号为 2 99740 0 9

摘　　要：将无定型二氧化硅与乙二醇、氢氧化钾在 196℃反应 ,制成高反应活性的五配位硅钾化合物 ,并以此为原料与 2 -氯乙醇反应制成双羟基四配位有机硅单体 ,通过该单体与对苯二甲酰氯、 2 ,4-甲苯二异氰酸酯、低摩尔质量的异氰酸酯基封端的聚醚进行低温溶液缩聚反应合成了含硅聚酯、含硅聚氨酯、含硅聚醚氨酯 ;用IR、TG、GPC对产物进行了结构表征。结果表明 ,这些聚合物由于引进了硅元素 ,热稳定性有所提高 。s:A high reactive pentacoordinate organic silicon complex was prepared by means of the reaction of silica with ethylene glycol and potassium hydroxide.Then novel tetracoordinate silicon was synthesized by the reaction of ClCH 2CH 2OH with reactive pentacoordinate silicon complex.Then silicon containing polymer was synthesized by low temperature solution condensation between tetracoordinate silicon and p phthaloyl chloride or 2,4 toluene diisocyanate or poly(ether diisocyanatr)in dimethyl sulfoxide.The product was characterized and analyzed by IR、TG、GPC.The IR spectra of polyester exhibited a characteristic strong absorption bands for ester carbonyl about in 1724 0 cm -1 .TG analysis showed the better thermal stability.GPC analysis showed that the molecular weight of silicon containing polyester was between several ten thousand to hundred thousands.

关 键 词：非碳热法 配位硅 二氧化硅 氯乙醇 聚酯 聚氨酯 聚醚 含硅聚合物 乙二醇 结构表征 

分 类 号：O634[理学—高分子化学]