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rong jiao - ning jiao fa yan zhi zhong kong bo li zhu
Pages: 74-79
Year: Issue:  S1
Journal: Journal of East China University of Science and Technology(Natural Science Edition)

Keyword:  溶胶-凝胶法结构分析密度Na 2 O-B 2 O 3 -SiO 2 凝胶中空玻璃珠;
Abstract: 选择溶胶-凝胶粉末静态成珠法,制得了(Li2O)-Na2O-B2O3-SiO2系统中空玻璃珠。用红外吸收光谱研究了凝胶结构随热处理温度的变化。随温度升高,Si—O—C2H5、Si—OH键逐渐消失,而Si—O—B,B—O,Si—O键逐渐形成和增加。借助光学显微镜、扫描电子显微镜观察了玻璃珠的中空状态和表面形貌。并探讨了成珠方法、过程及珠密度的影响因素。
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