Effects of Bi-NTO complex on thermal behaviors, nonisothermal reaction kinetics and burning rates of NG/TEGDN/NC propellant.
A bismuth 3-nitro-1,2,4-triazol-5-one (Bi-NTO) complex was prepared and characterized, and its effects on the thermal behaviors, non-isothermal decomposition reaction kinetics, and burning rates of the double-base (DB) propellant containing the mixed ester of triethyleneglycol dinitrate (TEGDN) and nitroglycerin (NG) with Bi-NTO complex as a ballistic modifier were investigated by thermogravimetry and derivative thermogravimetry (TG-DTG), and differential scanning calorimetry (DSC). The results show that Bi-NTO complex can increase the decomposition heat by 140 J g(-1), and it can change the decomposition reaction mechanism function, the kinetic parameters and kinetic equation of the propellant under 0.1 MPa. Combustion experiment shows that Bi-NTO complex can increase the burning rate and reduce the pressure exponent of the NG/TEGDN/NC propellant effectively, with the increase of the catalysis efficiency by 40%.
Yi
Jian-Hua
JH
Xi'an Modern Chemistry Research Institute, Xi'an, Shaanxi 710065, PR China.
Zhao
Feng-Qi
FQ
Hong
Wei-Liang
WL
Xu
Si-Yu
SY
Hu
Rong-Zu
RZ
Chen
Zhi-Qun
ZQ
Zhang
La-Ying
LY
D001729:Bismuth; D002152:Calorimetry, Differential Scanning; D017745:Incineration; D007700:Kinetics; D009566:Nitrates / Q000737:chemistry; D009574:Nitro Compounds / Q000737:chemistry*; D005996:Nitroglycerin / Q000737:chemistry; D013696:Temperature; D013816:Thermodynamics; D013818:Thermogravimetry; D014230:Triazoles / Q000737:chemistry*
C505897:3-nitro-1,2,4-triazol-5-one; D009566:Nitrates; D009574:Nitro Compounds; D014230:Triazoles; D005996:Nitroglycerin; D001729:Bismuth