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METHOD OF PRODUCING THE OXIDIZED GRAPHITEпатент
- Авторы: Avdeev V.V., Martynov I.Ju, Nikol'skaja I.V., Monjakina L.A., Denisov A.K., Loginov N.D., Sezemin V.A.
- Номер: 2089495
- Дата публикации патента: 10 сентября 1997 г.
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Реферат (описание изобретения):
FIELD: chemical technology. SUBSTANCE: graphite powder is treated with oxidizing solution based on concentrated H2SO4 and NH4NO3 at consumption of NH4NO3 0.046-0.137 g/1 g graphite. Graphite bisulfate is separated from oxidizing solution excess up to its content less 1.5 g/1 g graphite, hydrolyzed, washed and dried. The obtained graphite bisulfate exhibits I-III grades. Properties: foam graphite expansion degree after thermic treatment of the oxidized graphite-III is 900, filled density is 1.1-9.0 g/l. Method is used for making flexible graphite foil and composition materials. EFFECT: improved method of producing. 1 tbl
- Добавил в систему: Авдеев Виктор Васильевич