摘要
以四甲氧基硅 (TMOS)和γ氨丙基甲基二甲氧基硅烷 (APMDMOS)为前驱体 ,利用溶胶凝胶技术 ,通过TMOS和APMDMOS的水解缩聚反应制得了一种新的功能化的有机 /无机杂化材料 .探讨了 pH值、反应温度、水与前驱体的体积比和TMOS用量等因素对水解 缩聚反应体系凝胶时间和光学性能的影响 ,借助红外光谱法对该材料进行了结构表征 .结果表明 :随着TMOS用量、反应温度和前驱体浓度的增大 ,水解缩聚体系凝胶时间缩短 ,可见光透光率降低 ;随pH值的增大 ,可见光透光率和体系凝胶时间出现极大值 .
A new type of organic/inorganic hybrid materials was prepared by sol-gel process through the hydrolysis and polycondensation of tetramethoxy-silicane (TMOS) and gamma-amin-opropylmethyldimethoxy silane (APMDMOS) as precursors. The effects of reaction system's pH, reaction temperature, the volume ratio of water to precursors, and TMOS content on the gelation time and optical property of the hybrid materials were investigated in detail. The forma-tion of silica gel materials and the hybrid materials has been confirmed by Fourier transform infrared . The results show that the gelation time and visible light transmittance of the above-mentioned systems decrease as the TMOS content, reaction temperature and the density of precursors increase. The visible light transmittance and the gelation time of the systems exhibit a maximum value as pH increases.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2002年第3期313-317,共5页
Journal of Xi'an Jiaotong University
基金
西安交通大学科研基金资助项目
