Influences of HMX contents on potential reaction violence and fragmentation degree of PBT-propellants after impact load

The extent of damage that is developed during the production, transportation, storage, and handling propellants after a low-velocity impact an important factor in evaluating dangerous threat such as deflagration-to-detonation transition. In this paper, friability test was performed to evaluate critical ignition velocity ( CIIV), fragmentation degree, potential reaction violence four 3, 3-Bis(azidomethyl)oxetane (BAMO) tetrahydrofuran (THF) copolymer-propellants (PBT-propellants) with various 3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) contents under at different velocities. results showed HMX increased, CIIV decreased changes also decreased. Simultaneously, degree increased increase velocity, it judged by initial dynamic activity ratio. Then, we calculated maximum value ratio fitting data using Boltzmann, which were 27 (HMX = 0), 39 5%), 48 10%), 56 15%). ratios between PBT-propellants containing those without 1.44, 1.78, 2.07. addition impact. due Similarly, obtained values violence, 62.39, 50.17, 41.89, 34.65. contents, improved safety burning