| Инд. авторы: | Likhacheva A.Y., Chanyshev A.D., Goryainov S.V., Rashchenko S.V., Litasov K.D. |
| Заглавие: | High-Pressure–High Temperature (HP-HT) Stability of Polytetrafluoroethylene: Raman Spectroscopic Study Up to 10 GPa and 600 ℃ |
| Библ. ссылка: | Likhacheva A.Y., Chanyshev A.D., Goryainov S.V., Rashchenko S.V., Litasov K.D. High-Pressure–High Temperature (HP-HT) Stability of Polytetrafluoroethylene: Raman Spectroscopic Study Up to 10 GPa and 600 ℃ // Applied Spectroscopy. - 2017. - Vol.71. - Iss. 8. - P.1842-1848. - ISSN 0003-7028. |
| Внешние системы: | DOI: 10.1177/0003702817691529; РИНЦ: 31079940; PubMed: 28195496; SCOPUS: 2-s2.0-85026726753; WoS: 000406708600010; |
| Реферат: | eng: The increasing demand for use of polymers at extreme conditions makes important the exploration of their behavior in a wide pressure and temperature range, which remains unknown for polytetrafluoroethylene (PTFE), one of the most common materials. An in situ Raman spectroscopic study of PTFE shows that it is stable within the range of 2–6 GPa at 500 ℃ and up to 12 GPa at 400 ℃. At T > 500 ℃ and P > 3.5 GPa, the graphitization of PTFE is observed, but judging from the preservation of liquid run products, PTFE can be used as a material for sample container up to 600 ℃ at this pressure. The obtained data allow the suggestion that the triple point between liquid, solid, and decomposed (carbonized) PTFE is located between 3 and 4 GPa at about 550 ℃, by analogy with the behavior of polycyclic aromatic hydrocarbons. © 2017, © The Author(s) 2017.
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| Ключевые слова: | Polytetrafluoroethylenes; Triple points; Raman spectroscopic study; Pressure and temperature; High temperature; High pressure; Extreme conditions; Common materials; Spectroscopic analysis; Raman spectroscopy; Polycyclic aromatic hydrocarbons; Aromatic hydrocarbons; Raman spectroscopy; PTFE; polytetrafluoroethylene; high temperature; High pressure; Polytetrafluoroethylene (PTFE); |
| Издано: | 2017 |
| Физ. характеристика: | с.1842-1848 |