低密度玻璃化液体中力学模量与脆性的关联研究

Research on correlation between mechanical modului and fragility for low-density glass-forming liquid

利用低密度玻璃化液体的径向分布函数,导出过冷液体脆性与玻璃化温度、体模量和剪切模量的比值及与柏松比之间简单明确的关系.此结论定性地与实验结果一致.并为各种玻璃化液体的研究,提供有效的途径.

Radial distribution function of low-density glass-forming liquid was used to derive the simple correlation between fragility of super-cooled liquid and glassy temperature,ratio of bulk modulus and shear modulus,as well as Poisson＇s ratio.The result was in agreement with the experiments in qualitatively,which provided an effective approach in researching the mechanical properties to various liquids in glass-liquid phase transition.