Characterization of Condensed-Phase Decomposition Behaviors of Energetic Materials
Abstract
The funds from this equipment proposal were used to purchase a high-pressure differential scanning calorimeter (HP-DSC-204). This HP-DSC is used to identify exo-/endo-thermic events during condensed-phase decomposition of energetic materials. The purchased Netzsch model HPDSC 204 is capable of operating at pressures up to 150 bar (about 2150 psig), heating rates up to 100K/min with a flow of a suitable carrier/purge gas and various types of crucibles. The system can also be used with a reactive gas. Software control allows the programming of almost any type of heating and cooling situation. The HP-DSC also is equipped with a reference cell, in order to obtain quantitative data of the heat flow. Such data are derived from the use of appropriate calibration materials (indium, tin, bismuth and zinc). The system is used in two ARO-sponsored projects. In the first project, it is used to identify heat release during thermolysis of nitramines (RDX and HMX) and their mixtures with a with a high-nitrogen ionic compound. In the second project, the HP-DSC is used to examine the role of pressure on decomposition of liquid propellants. The overall objective for these combined experimental studies and quantum mechanics investigations is to identify the relevant reaction channels at high heating rates and to develop reaction mechanisms, which can be incorporated in computational fluid dynamic simulations of ignition and combustion of solid and liquid propellants used in propulsive devices.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 2021
- Accession Number
- AD1187855
Entities
People
- Richard A. Yetter
- Stefan T. Thynell
Organizations
- Pennsylvania State University