Experimental and simulative thermal stability study of HTPE solid propellants in different scales

• DOI: 10.1016/j.csite.2021.101566
• Publication Date: 2021-10-19T11:05:55Z
• Authors: Xu Wang; Chenxi Pei; Feiyang Xu; Xingliang Wu; Huabo Li; Nian Yang; Dabin Liu; Sen Xu
• Keywords: Thermal Stability; Energetic material

The hydroxyl-terminated polyether (HTPE) solid propellants are widely recognized as promising alternatives for polybutadiene (HTPB) due to their compliance with insensitive munition characteristics of composite propellant. This study reports thermal stability investigation HTPE in different scales the help differential scanning calorimetry (DSC, 0.9 mg), accelerating rate (ARC, 0.219 g), and slow cook-off (112 g) tests by taking HTPE/A3/Al/AP/PSAN propellant an example. More importantly, first time, decomposition kinetic parameters were calculated employing iso-conversional Friedman method using DSC experimental data at heating rates. simulation results adiabatic combustion obtained applying Advanced Kinetics Technology Solutions software, which exhibited satisfied consistency results, less than 2% average deviation. Finally, validated further employed describe large-scale hazards predicted self-accelerating temperature 50 kg-scale was 94.2 °C. Our simulative provided a cogent convenient strategy understand hazard during usage, storage, transportation.