波谱学杂志 ›› 1990, Vol. 7 ›› Issue (1): 115-118.

• 研究论文 • 上一篇    下一篇

钠、硼酸盐玻璃的11B变温核磁共振研究

徐曙, 潘麟章, 邬学文   

  1. 华东师范大学物理系
  • 收稿日期:1989-03-16 修回日期:1989-06-17 出版日期:1990-03-05 发布日期:2018-01-23
  • 基金资助:
    国家自然科学基金

TEMPERATURE-DEPENDENT 11B NMR STUDIES OF SODIUM BORATE GLASSES

Xu Shu, Pan Linzhang, Wu Xuewen   

  1. Department of Physics, East China Normal University, Shanghai
  • Received:1989-03-16 Revised:1989-06-17 Online:1990-03-05 Published:2018-01-23

摘要: 本文应用变温11B核磁共振技术研究了RNa2O·B2O3玻璃体系在室温和300℃时硼原子的配位情况。结果表明,当R>0.5时,四配位硼原子数随温度的上升而减少。因此,玻璃态结构也可能随温度变化而改变。

关键词: 变温核磁共振, 玻璃态, 玻璃转变温度

Abstract: Temperature-dependent 11B NMR technics have been employed to determine the boron coordination in sodium borate glasses at room temperature and 300℃.The results show that, as R>0.5, the fraction of borons in 4-coordinated will decrease as temperature increases. These resuhs mean that it is possible for glass structure changes as temperature is below the transitional temperature.

Key words: Temperature-dependent NMR, Vitreous, Transitional temperature