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无机基有机复合光功能材料是材料学界和光学界的研究热点。为了解决传统无机凝胶材料的机械加工性能差,光损耗大等问题,将有机基团引入到无机凝胶基质中,不但可以较好地优化基质的结构,还可在很大程度上改善材料的性能。以一甲基三甲氧基硅烷(MTMS)和正硅酸乙酯(TEOS)为原料,甲醇为溶剂,盐酸为催化剂,通过溶胶-凝胶法制备出分子级复合的S iO2杂化有机硅树脂。分析了S iO2杂化有机硅树脂的合成机理,借助傅立叶变换红外光谱表征其结构,TG和马弗炉灼烧实验研究S iO2杂化有基硅树脂的耐热性能,结果表明S iO2杂化有机硅树脂500~600℃的失重只有3%,具有良好的耐热性,并探讨了耐热机理。
Inorganic-based organic composite optical functional materials are the hot topics in the field of materials and optics. In order to solve the problems of poor machinability and large optical loss of the traditional inorganic gel materials, the introduction of organic groups into the inorganic gel matrix can not only optimize the structure of the matrix but also greatly improve the material Performance. Methyltrimethoxysilane (MTMS) and tetraethyl orthosilicate (TEOS) as raw materials, methanol as solvent, hydrochloric acid as catalyst, prepared by sol-gel molecular composite S iO2 hybrid silicone resin. The synthesis mechanism of S iO2 hybrid silicone resin was analyzed. The structure of S iO2 hybrid silicone resin was characterized by Fourier transform infrared (FTIR) spectroscopy. The TG and muffle burning experiments were carried out to study the thermal resistance of S iO2 hybrid silicone resin. Silicone resin 500 ~ 600 ℃ weight loss of only 3%, has good heat resistance, and discussed the heat-resistant mechanism.