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http://dx.doi.org/10.6108/KSPE.2019.23.4.061

Accelerated Aging Characteristics of a Double Base Propellant  

Go, Cheongah (Agency for Defense Development)
Park, Youngchul (Agency for Defense Development)
Seo, Taeseok (Agency for Defense Development)
Moon, Youngtaek (Agency for Defense Development)
Kim, Junhyung (Agency for Defense Development)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.23, no.4, 2019 , pp. 61-69 More about this Journal
Abstract
Accelerated aging test for the double base propellant was carried out at three different temperatures (60, 70, and $75^{\circ}C$) for over a year. To evaluate the aging characteristics of the double base propellant, the stabilizer contents and thermal decomposition kinetics were analyzed by using high performance liquid chromatography (HPLC) and AKTS-Thermokinetics software. As a result, stabilizer contents in the double base propellant gradually decreased according to the aging temperature and aging duration. The consumption rate of 2-NDPA in the accelerated aged propellants showed that it was two times faster at $75^{\circ}C$ in compared with ther rate at $70^{\circ}C$. These experimental values were simulated by the SB kinetic model, and it was shown that the two-step model with constant reaction orders n1=1 and n2=0 best describes the process of the stabilizer depletion for the double base propellant.
Keywords
Accelerated Aging Test; Double Base Propellant; Nitrate ester; 2-Nitrodiphenylamine(2-NDPA);
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