TY - JOUR
T1 - Preparation, nonisothermal decomposition kinetics, heat capacity, and safety parameters of TKX-50-based PBX
AU - Niu, Hu
AU - Chen, Shusen
AU - Jin, Shaohua
AU - Li, Bingjun
AU - Li, Xin
AU - Wang, Junfeng
AU - Ma, Xiao
AU - Bao, Fang
AU - Li, Lijie
N1 - Publisher Copyright:
© 2017, Akadémiai Kiadó, Budapest, Hungary.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - TKX-50-based PBX (PBX-T) is prepared by solution–water suspension method using dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) as the explosive. The thermal behavior of PBX-T is investigated under a nonisothermal condition by using TG-DTG and DSC method. The kinetic parameters (Ea = 167.98 kJ mol−1 and A = 1016.05 s−1) for the main thermal decomposition reaction of PBX-T are calculated from the analysis of DSC curves by differential method and integral method, and the nonisothermal kinetic equation of the exothermic process is d α/ d T= (10 16.05/ 2 β) 5 (1 - α) [- ln (1 - α) ] 3 / 5exp (- 2.0204 × 10 4/ T) , suggesting that the main exothermic decomposition reaction mechanism of PBX-T is classified as Avrami–Erofeev equation. The specific heat capacity (Cp) of PBX-T is measured using continuous Cp mode of C80 micro-calorimeter. Depending on the thermal decomposition parameters and Chinese Military Standards GJB 772A-97 method, the adiabatic time, self-accelerating decomposition temperature, sensitivities, and 5-second flash point on of PBX-T are obtained.
AB - TKX-50-based PBX (PBX-T) is prepared by solution–water suspension method using dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) as the explosive. The thermal behavior of PBX-T is investigated under a nonisothermal condition by using TG-DTG and DSC method. The kinetic parameters (Ea = 167.98 kJ mol−1 and A = 1016.05 s−1) for the main thermal decomposition reaction of PBX-T are calculated from the analysis of DSC curves by differential method and integral method, and the nonisothermal kinetic equation of the exothermic process is d α/ d T= (10 16.05/ 2 β) 5 (1 - α) [- ln (1 - α) ] 3 / 5exp (- 2.0204 × 10 4/ T) , suggesting that the main exothermic decomposition reaction mechanism of PBX-T is classified as Avrami–Erofeev equation. The specific heat capacity (Cp) of PBX-T is measured using continuous Cp mode of C80 micro-calorimeter. Depending on the thermal decomposition parameters and Chinese Military Standards GJB 772A-97 method, the adiabatic time, self-accelerating decomposition temperature, sensitivities, and 5-second flash point on of PBX-T are obtained.
KW - Dihydroxylammonium 5, 5′-bistetrazole-1, 1′-diolate
KW - Nonisothermal kinetic
KW - PBX
KW - The adiabatic time
KW - The specific heat capacity
UR - http://www.scopus.com/inward/record.url?scp=85033599583&partnerID=8YFLogxK
U2 - 10.1007/s10973-017-6750-1
DO - 10.1007/s10973-017-6750-1
M3 - Article
AN - SCOPUS:85033599583
SN - 1388-6150
VL - 131
SP - 3193
EP - 3199
JO - Journal of Thermal Analysis and Calorimetry
JF - Journal of Thermal Analysis and Calorimetry
IS - 3
ER -