Diagnostic System for Decomposition Studies of Energetic Materials
Abstract
The funds from this equipment proposal were used to update a species diagnostic system used in thermolysis of energetic materials. Specifically, the funds were used to purchase a Fourier transform infrared (FTIR) spectrometer manufactured by Bruker (Vertex 80), which acquires transmittance spectra of the evolved gaseous species at speeds ranging from slow to 20 spectraper second at 2 cm-1 spectral resolution. The FTIR spectrometer is primarily interfaced with an existing confined rapid thermolysis system of either liquid or solid samples in milligram quantities, allowing heating at rates of 2,000K/s and applied pressures to 1,000 psig. The system is used in two existing projects. In the first ARO-sponsored project, it is used to identify species from slow and rapid thermolysis of RDX and mixtures of RDX with a high-nitrogen compound. In the second project funded by AFOSR, the diagnostic system is used to identify species evolution of energetic materials containing catalytic nanoparticles. These species measurements provide guidance to a quantum mechanics investigation, in which the transition states and reaction pathways are sought. 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 used in computational fluid dynamic studies of ignition and combustion of solid and liquid propellants used in propulsive devices.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 03, 2017
- Accession Number
- AD1051347
Entities
People
- Stefan T. Thynell
Organizations
- Pennsylvania State University