| 초록 |
ZrKClO4 is energetic material well used as propellants in aerospace department also known as NASA Standard Initiator (NSI) due to high energy density. If we put ZrKClO4 in closed chamber and ignite, oxygen atoms which bonded with KClO4 obtain activation energy. And then oxygen atoms begin to bond with Zr and form ZrO2. Because this reaction is oxidation-reduction and exothermic reaction, heat generated from the reaction activates another oxygen atom. Because this phenomenon could be occurred under anaerobic conditions, it is applying to energy release of spacecraft and rocket needed to propel under anaerobic conditions. It is important to evaluate precise energy release performance of ZrKClO4 to apply and design. However, when ZrKClO4 ages, the energy release performance decrease due to thermodynamic characteristics. Thermodynamic characteristics such as enthalpy of aging energetic materials are changed according to its aging time. So this study analyses energy release performance of aging ZrKClO4 according to thermodynamic characteristics over aging time. |
