Abstract

The results of a study of the rheological properties (shrinkage on heating, viscosity) of porous glasses (PGs) obtained as a result of through acid leaching of two-phase sodium borosilicate glass doped with small additives of P₂O₅ and fluoride ions, as well as bismuth-containing PGs and quartzoid glasses based on them, depending on the temperature of the heat treatment of the PG and in comparison with the characteristics of the samples obtained from sodium borosilicate glass without additives, are presented. It is found that doping glass with the indicated impurities leads to a decrease in the thermal resistance of the obtained PGs and bismuth-containing PGs. The introduction of bismuth nitrate into PG in the case of the low-temperature treatment (at 120°C) lowers the temperature for the same viscosity values of quartzoid glasses by 15–20°C, in contrast to samples without additives, as well as from higher-temperature treatment (at 650°C) PGs with additives.

中文翻译：

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P2O5 杂质和氟离子对多孔玻璃和基于它们的含铋复合材料流变性能的影响

摘要

多孔玻璃 (PG) 流变特性（加热收缩率、粘度）的研究结果，该多孔玻璃 (PG) 是通过酸浸出掺杂有少量 P ₂ O ₅添加剂的两相硼硅酸钠玻璃而获得的和氟离子，以及含铋的 PG 和基于它们的石英玻璃，取决于 PG 的热处理温度，并与从不含添加剂的硼硅酸钠玻璃获得的样品的特性进行比较。发现用指定的杂质掺杂玻璃导致所得PGs和含铋PGs的热阻降低。与没有添加剂的样品相比，在低温处理（120°C）的情况下，将硝酸铋引入 PG 可使相同粘度值的石英玻璃的温度降低 15-20°C，以及来自含有添加剂的高温处理（650°C）PG。