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用多种NMR方法，包括(29)Si、(23)Na、(11)BMAS及(29)SiCP／MASNMR，研究了一定组成的Na2O－B2O3-SiO2三元体系玻璃在不同温度下分相处理24小时及用酸侵析处理后的结构变化．结果表明，在低于分相上限临界温度的范围内，存在着一个温度转折点．低于这一温度时，受动力学因素影响，分相未达平衡态，温度愈低，距平衡态愈远，分相愈不完全．超过这一温度，分相可达平衡态，受热力学控制，温度愈高，混溶程度愈大．故在此温度点分相处理，可达最佳分相效果．不同校所得的NMR结果之间有良好的对应关系．
A series of Na 2 O-B 2 O 3 -SiO 2 system ternary glasses with certain compositions were investigated by means of various NMR methods including (29) Si, (23) Na, (11) BMAS and (29) SiCP / MASNMR at different temperatures 24 hours and the structure change after acid treatment. The results show that there is a temperature turning point below the critical temperature of the upper limit of the phase separation. Below this temperature, influenced by the kinetic factors, the phase separation does not reach the equilibrium state, the lower the temperature, the farther away from the equilibrium state, the less complete the phase separation. Beyond this temperature, phase up to equilibrium, controlled by thermodynamics, the higher the temperature, the greater the degree of miscibility. Therefore, at this temperature point-phase processing, up to the best phase-separation effect. There is a good correspondence between the NMR results obtained from different schools.