(DURIP) THERMAL FINGERPRINTING OF ENERGETIC MATERIALS USING FLASH DIFFERENTIAL CALORIMETER
Abstract
The Flash Differential Scanning Calorimetry (FDSC) has been used to study the kinetics of the glass transition and crystallization processes, providing a fingerprint of the thermal behavior of materials. The FDSC allows monitoring of structural changes at the shortest time scales, immediately after vitrification, and significantly widens the range of cooling rates to produce glasses of different stability-enthalpy. The advantage of Flash DSC compared with conventional DSC lies in the broad dynamic range of heating and cooling rates, along with isothermal and temperature-modulated operation. This broad dynamic range is of special interest because transitions of energetic materials are firmly dependent on time (rate). Additionally, the Flash DSC is beneficial in analysis of energetic materials, since an exceedingly small amount of material is enough to conduct an experiment. The present proposal builds on the concept of using fast scanning calorimetry to study the thermal properties of the reactive materials. The proposed work would increase the knowledge of material thermal fingerprinting investigated, by systematically studying common energetic materials over a range of cooling rates from 0.1 to 4000 K-s. This research project aims to gain a fundamental understanding of crystallization kinetics from calorimetry and to develop new processing strategies that could avoid crystallization to form stable materials. The results are anticipated to facilitate the development of new amorphous materials, potentially leading to formation of thermally stable energetic materials, which would be of benefit to the U.S. economy and society. The goal is to study the fundamental knowledge required to understand the structure property relationship of reactive materials for advancement in propulsion. This is of interest to the Air Force, because this would allow us to characterize and reliably predict the fundamental chemistry, physics, kinetics and material science associated with high energy materials.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502210162
Entities
People
- Nabila Shamim
Organizations
- Air Force Office of Scientific Research
- Prairie View State College
- United States Air Force