Na_2O-B_2O_3-SiO_2玻璃结构中硼配位状态的研究

Boron Coordination State in Structure of Na_2O-B_2O_3-SiO_2 Glass

本文主要探讨玻璃熔体在不同的温度处理情况下对硼硅酸盐玻璃结构的影响。通过红外光谱和核磁共振谱分析了硼硅酸盐玻璃在不同温度处理情况下的结构变化。研究结果表明:硼硅酸盐熔体从高温冷却下来,硼配位发生由三角体到四面体的转变,并且硅氧网络聚集导致Q^3的含量降低。运用NMR研究温度与硼硅酸盐熔体结构关系发现,高温有利于[BO_3]及Q^3的存在,反之,低温状态下[BO_4]以及Q^4的比例更高。

This paper mainly discusses the influence of glass melt structure of borosilicate glass in the condition of different temperature treatment. Infrared spectroscopy and nuclear magnetic resonance spectroscopy were investigated to analysis the change of borosilicate glass structure under different temperature treatment. The results indicate that boron coordination changes from the triangle to the tetrahedron with borosilicate melt cooling down from high temperature, and the silica network aggregation leads to the decrease of Q^3 content. The study of relationship between temperature and borosilicate melt structure using NMR shows that high temperature is conducive to the existence of Q^3 and [ BO3 ], on the contrary, the content of Q^4 and [ BO4 ] are higher in a state of low temperature.