摘要
以无定型二氧化硅为原料,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,并以此为原料与含活泼氯的3-氯丙烯反应制备出相应的含双键的四配位硅;再进一步和四甲基氢氧化铵、正硅酸乙酯反应,合成新型的乙烯基倍半硅氧烷。通过乙烯基倍半硅氧烷和苯乙烯的聚合反应,合成新型的聚合物。借助元素分析、热重分析、红外光谱等现代测试-1手段,对合成产物进行了结构表征。红外光谱分析表明,四配位硅单体在1630cm附近的C=C伸缩振动吸收峰在共聚物中消失。TG表明,共聚物在373℃开始分解。
A high reactive penta-coordinate organic silicon complex was prepared by the reaction of natural silica with ethylene glycol in the presence of potassium hydroxide.Tetra-coordinate silicon containing double bond was prepared by the reaction of the penta-coordinate silicon complex with allyl chloride.A novel type of silisesquioxane modified by vinyl-letracoordinate silicon was yielded by reactinng with tetramethyl ammonium hydroxide and tetrathoxysilane. A novel type polymer was synthesized by reacting of the siliseasquioxane with vinylletracoordirate and styrene. And the synthesized product was characterized and analyzed by fourier transform infrared spectroscopy and differential scanning calorimetry . The adsorption band of IR spectrum at 1 630 cm^-1 for C=C was indicated for tetra coordinate silicon monomer, but disappeared for the copolymer. TG analysis showed that the copolymer began losing weight at 373 ℃.
出处
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CAS
2009年第9期58-60,共3页
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