Low temperature synthesis of a monolithic silica glass by the pyrolysis of a silica gel

Autor:	Teruo Sakaino, Seitarō Okano, Masayuki Yamane, Shinji Aso
Rok vydání:	1979
Předmět:	Materials science Chromatography Silicon Silica gel Mechanical Engineering chemistry.chemical_element Porous glass Methoxide chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Alkoxide General Materials Science Pyrolysis Fumed silica Hydrophobic silica
Zdroj:	Journal of Materials Science. 14:607-611
ISSN:	1573-4803 0022-2461
DOI:	10.1007/bf00772720
Popis:	The reaction process in the pyrolysis of silica gel has been investigated as the basic study on the low temperature synthesis of monolithic glass from a metal alkoxide. A large volume change which may cause stress-induced fracture of a gel occurred in the following process stages: (a) the decompostion of residual organic compounds into carbon dioxide (300 to 500° C); (b) small pore collapse (400 to 500° C); (c) larger pore collapse (700 to 900° C). A fracture-free monolithic silica glass was successfully prepared from a dry silica gel formed by the hydrolysis of silicon methoxide by careful heat-treatment. The properties of the synthetic silica glass were similar to those of commercial vitreous silica.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::870a5745371ac35368e0238997e7d722 https://doi.org/10.1007/bf00772720 Zobrazit plný text záznamu Full text from SpringerLink