The hygrothermal aging effects of titanium hydride potassium perchlorate for pyrotechnic combustion
| Autor: | Juyoung Oh, Jack J. Yoh, Anirudha Ambekar |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Propellant
021110 strategic defence & security studies Standard enthalpy of reaction Materials science Potassium perchlorate 0211 other engineering and technologies Titanium hydride 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Combustion chemistry.chemical_compound Differential scanning calorimetry chemistry Chemical engineering Pyrotechnic initiator Physical and Theoretical Chemistry Chemical equilibrium 0210 nano-technology Instrumentation |
| Zdroj: | Thermochimica Acta. 665:102-110 |
| ISSN: | 0040-6031 |
| Popis: | Titanium hydride potassium perchlorate (THPP) is a well-known pyrotechnic initiator commonly utilized in the field of aerospace propulsion. The current study experimentally elucidates the effects of hygrothermal aging on the pyrotechnic combustion of THPP and proposes two methodologies for analysis. The first technique implements a two-step isoconversional method to analyse the hygrothermally aged THPP with Differential Scanning Calorimetry (DSC), and the second method offers a novel aging prediction methodology by comparing the experimental heat of reaction values against idealized equilibrium values. As the heat of reaction plays a major role on determining propellant’s performance, NASA Chemical Equilibrium with Applications (CEA) was used to predict its value. The knowledge of the combined aging effects is directly connected to the performance, lifetime, and safety of a pyrotechnic initiator that utilizes the THPP. The values of heat of reactions for different samples with different aging duration were estimated based on their composition extracted from the X-ray Photoelectron Spectroscopy (XPS) study. |
| Databáze: | OpenAIRE |
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