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本文应用变温核磁共振技术研究了xNa2O·yB2O3二元玻璃体系的融熔态结构。结果表明,R≤0.5的熔体中存在两种较为稳定的结构:在730—780℃温度区域形成了B原子间以双桥氧连接的网状结构;在880—920℃温度区域形成了B原子间含三桥氧的链状结构。当R>0.5时熔体中只存在第一种结构。The molten structure of Na2O·B2O3 glasses are investigated by the temperature-dependent 11B CW-NMR technique. The results show that, as R≤0.5 there are two stable configurations in the molten state. One configuration, occuring at 730-780℃, has two bridge-oxygen atoms between two boron atoms; and the other configuration, occuring at 880-920℃, has three bridge-atoms between two boron atoms. But only the first configuration exists as R>0.5.
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