玻璃熔体电导活化能和黏滞活化能的测量与计算

Calculation of Conductivity Activation Energy and Viscous Activation Energy of Glass Melt

介绍玻璃熔体2种常见的电导活化能和黏滞活化能的应用与测试机理,并以无碱玻璃纤维配方的玻璃熔体为例测算其电导活化能和黏滞活化能。结果表明,无碱玻纤熔体的电导活化能为162.6~194.9 kJ/mol,黏滞活化能为247.3~257.2 kJ/mol。采用B_(2)O_(3)替代等质量分数的CaO后,虽然玻璃熔体的电阻率和黏度增加,但电导活化能和黏滞活化能都降低,表明玻璃熔体的活化能受组分变化影响,具体影响机理和程度有待进一步研究。

The application and testing mechanism of the two common activation energies of glass melt,namely conductivity activation energy and viscosity activation energy,were introduced.On this basis,the conductivity activation energy and viscosity activation energy of the glass melt with typical E glass formula were calculated.The results showed that the conductivity activation energy was 162.6 to 194.9 kJ/mol,and the viscosity activation energy was 247.3 to 257.2 kJ/mol.After B_(2)O_(3) replaced CaO with equal mass fraction,the electrical resistivity and viscosity of glass melt increased,but the conductivity activation energy and viscosity activation energy of the glass melt decreased.It is shown that the activation energy of glass melt is affected by the change of components,and the specific mechanism and degree of influence need to be further studied.