Is It not Time to Go back to Tamman’s Tg?
- 作者: Minaev V.1,2, Parfenov N.3, Timoshenkov S.2, Vassiliev V.4, Kalugin V.2, Mukimov D.2
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隶属关系:
- ZAO RIMST
- National Research University of Electronic Technology (MIET)
- Moscow Aviation Institute (National Research University)
- Moscow State University
- 期: 卷 46, 编号 8 (2017)
- 页面: 612-621
- 栏目: Article
- URL: https://journals.rcsi.science/1063-7397/article/view/186762
- DOI: https://doi.org/10.1134/S1063739717080121
- ID: 186762
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详细
Based on the analysis of numerous experimental data, it is shown that the currently generally accepted glass transition temperature Tg is not correct. It was the result of borrowing from G. Tamman the symbol Tg, which corresponds to the temperature at which a liquid in a viscous flow is transformed into a solid brittle glassy state, and using it instead of the symbol Tw. The latter corresponded to the bending temperature (for Tamman) on the property–temperature curve of glass-forming substances lying above Tamman’s Tg. The disclosed physico-chemical nature of the temperature curve Tw (currently, generally taken to be Tg), which is the temperature of the reverse direction of the interconversion of nanofragment patterns (of polymorphs) of the high- and low-temperature polymorphs that coexist in a vitreous substance, is based on the application of polymer-polymorphing representations of the structure of glass-forming substances. In the past few decades, the discovery of the preendothermal effect located, just as Tamman’s Tg, below the standard Tg, confirms the correctness of Tamman’s Tg characterized by the increased specific heat of the heated glass.
作者简介
V. Minaev
ZAO RIMST; National Research University of Electronic Technology (MIET)
Email: sedennik@mail.ru
俄罗斯联邦, Moscow, 124460; Moscow, 124498
N. Parfenov
Moscow Aviation Institute (National Research University)
编辑信件的主要联系方式.
Email: sedennik@mail.ru
俄罗斯联邦, Moscow, 125993
S. Timoshenkov
National Research University of Electronic Technology (MIET)
Email: sedennik@mail.ru
俄罗斯联邦, Moscow, 124498
V. Vassiliev
Moscow State University
Email: sedennik@mail.ru
俄罗斯联邦, Moscow, 119234
V. Kalugin
National Research University of Electronic Technology (MIET)
Email: sedennik@mail.ru
俄罗斯联邦, Moscow, 124498
D. Mukimov
National Research University of Electronic Technology (MIET)
Email: sedennik@mail.ru
俄罗斯联邦, Moscow, 124498