Abstract: The brightness temperature of polymethyl methacrylate subjected to a shock wave reflected from a transparent LiF or sapphire window was measured by a pyrometric method. The pressure range in the primary wave was 20–40 GPa, and that in the reflected wave was 30–78 GPa. At an intensity of the primary shock wave in the range of low pressures (19.2–20.8 GPa), the temperature values in the reflected wave lie on a single-shock Hugoniot curve within the experimental error, as opposed to what might be expected based on the gas-dynamic calculation for the case of double shock loading. As the primary shock pressure increases to 38–41 GPa, the reflected shock temperature values (Formula presented.) become lower than on the single-shock Hugoniot (Formula presented.) but remain larger than those calculated by the equation of state (Formula presented.) under the assumption that the composition of polymethyl methacrylate is inert. It is concluded that this behavior of the temperature dependence is due to the depolymerization and subsequent decomposition of polymethyl methacrylate.

Cite: Bordzilovskii S.A. , Voronin M.S. , Karakhanov S.M.
Temperature of Polymethyl Methacrylate in a Secondary Shock Wave
Combustion, Explosion and Shock Waves. 2021. V.57. N6. P.736-745. DOI: 10.1134/s0010508221060137 WOS Scopus РИНЦ OpenAlex

Original: Бордзиловский С.А. , Воронин М.С. , Караханов С.М.
ТЕМПЕРАТУРА ПОЛИМЕТИЛМЕТАКРИЛАТА ВО ВТОРИЧНОЙ УДАРНОЙ ВОЛНЕ
Физика горения и взрыва. 2021. Т.57. №6. С.112-121. DOI: 10.15372/fgv20210613 РИНЦ OpenAlex

Dates:

Published print:

Jan 17, 2022

Identifiers:

Web of science:	WOS:000743554800013
Scopus:	2-s2.0-85123023503
Elibrary:	48128359
OpenAlex:	W4205791728

Citing: Пока нет цитирований

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