硅酸盐学报

Al2O3/SiO2摩尔比对无碱铝硼硅酸盐玻璃黏温特性的影响

作者：李青1 2 张广涛1 2 李赫然3 郑权1 2 王丽红1 2

单位：1. 东旭集团有限公司石家庄 050021 2. 平板显示玻璃技术和装备国家工程实验室石家庄 050035 3. 北京大学光华管理学院北京 100871

分类号：TQ171.112

出版年,卷(期):页码：2017,45(10):1516-1522

DOI：10.14062/j.issn.0454-5648.2017.10.19

摘要：

用高温熔融法制备了Al2O3/SiO2比变化的无碱铝硼硅酸盐玻璃。固定无碱铝硼硅酸盐玻璃体系中SiO2与Al2O3总量不变，研究了用Al2O3替代SiO2对玻璃的熔化温度、成型温度、退火点、应变点等特征黏度参考点的影响；通过红外光谱和Raman光谱研究其结构变化。结果表明：随着铝硅比n(Al2O3/SiO2)逐渐增加，玻璃网络中非桥氧减少，导致退火点(Ta)和应变点(Tst)不断升高；同时，在高温下，熔化温度(Tm)和成型温度(Tf)呈现下降趋势。

Alkali-free boroaluminosilicate glasses with different ratios of Al2O3/SiO2 were prepared by high temperature fusion method. The effects of substitution of Al2O3 for SiO2 by fixing mole percent of SiO2 and Al2O3 in alkali-free boro-aluminosilicate glasses on the reference point of viscosity-temperature characteristics such as glass melting temperature，forming temperature，annealing point and strain point were studied. The structure change of these glasses was analyzed by infrared and Raman spectroscopy. The results indicate that the non-bridging oxygens (NBOs) were found decrease in the glass network with an increase in the ratio of n(Al2O3/SiO2). The results indicate that the non-bridging oxygens (NBOs) decreases in the glass network with increasing of n(Al2O3/SiO2). This change results in increasing of the annealing point (Ta) and strain point (Tst) gradually and decreasing of the melting temperature (Tm) and forming temperature (Tf) at high temperature region.

基金项目：

国家科技支撑计划(2013BAE03B02-03)项目。

作者简介：

李青(1965—)，女，硕士，教授级高工。

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