Materials Reports  2020, Vol. 34 Issue (Z2): 128-131 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| 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
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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 |
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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.
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Published: 08 January 2021
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| Fund:This work was financially supported by the Key Research and Development Projects of Anhui Province, China (202004a05020031). |
| About author:: Jiedong Cui received his master degree in January 2008 from Graduate University of Chinese Academy of Sciences in materials.He is currently a senior engineer in State Key Laboratory of Advanced Technology for Float Glass Technology, CNBM Bengbu Design & Research Institute for Glass Industry Co. Ltd. His research has focused on new technology of special function glass.Xin Cao, professor-level senior engineer, doctor. He graduated from Wuhan University of Technology in 2004. He has been engaged in research and industrialization of new glass materials for a long time, including electronic information display glass, aviation glass, development of new varieties of glass powder with special thermal and electrical properties, exploration and practice of new technologies and methods of float glass. He has undertaken two national projects, including the 13th Five Year Plan Key Research and Development Plan (2016YFB0303700)and 973 National Key Research and Development Plan (2012CB724608). He has presided over and participated in 14 provincial projects, including Anhui Science and Technology Research Program, Natural Science Foundation, Major Scientific and Technological Projects, International Cooperation, and Shanghai innovation Plan. He has obtained 1 international patent, 19 state-authorized invention patents, 31 utility model patents and published more than 20 papers. |
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