Full Temperature Range Fitting of Glass Viscosity-Temperature Curve
CUI Jiedong1,2, CAO Xin1,2, WANG Pingping1,2, SHI Lifen1,2, ZHONG Zhaojin1,2, ZHAO Fengyang1,2, GAO Qiang1,2, LI Jinwei1,2
1 State Key Laboratory of Advanced Technology for Float Glass Technology, CNBM Bengbu Design & Research Institute for Glass Industry Co.Ltd, Bengbu 233010, China 2 Silica-based Materials Laboratory of Anhui Province, Bengbu 233010,China
Abstract: Based onthe measured viscosity-temperature data of display cover glass, the Vogel Fulcher Tammann equation (VFT) and Mauro-Yue-Ellison-Gupta-Allan equation (MYEGA) were used to fit and compare the viscosity temperature of glass in the full temperature range. The results showed that the fitting results of the two equations were close in the range of annealing point and forming point for float process, while the fitting results of the two equations began to appear large deviation when the temperature was lower than the annealing point or higher than the for-ming point. At the same time, the VFT equation fitting results are more sensitive to the data selection, the number of data has a greater impact on the fitting results, while the MYEGA equation was less dependent on the data selection, and the difference between the fitting value and the measured value is smaller. Based on the data of rotational viscosity, parallel plates viscosity, annealing point and strain point, an ideal glass viscosity temperature curve can be obtained by fitting the full temperature range from strain point to melting point with MYEGA equation.
崔介东, 曹欣, 王萍萍, 石丽芬, 仲召进, 赵凤阳, 高强, 李金威. 玻璃黏温曲线的全温度段拟合[J]. 材料导报, 2020, 34(Z2): 128-131.
CUI Jiedong, CAO Xin, WANG Pingping, SHI Lifen, ZHONG Zhaojin, ZHAO Fengyang, GAO Qiang, LI Jinwei. Full Temperature Range Fitting of Glass Viscosity-Temperature Curve. Materials Reports, 2020, 34(Z2): 128-131.
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2020, Vol. 34 
