A method of estimating the safe storage life （τ）, self-accelerating decomposition temperature （TsADT） and critical temperature of thermal explosion （Tb） of double-base propellant using isothermal and non-isothe...A method of estimating the safe storage life （τ）, self-accelerating decomposition temperature （TsADT） and critical temperature of thermal explosion （Tb） of double-base propellant using isothermal and non-isothermal decomposition behaviours is presented. For double-base propellant composed of 56±1wt% of nitrocellulose （NC）, 27±0.5wt% of nitroglycerine （NG）, 8.15±0.15wt% of dinitrotoluene （DNT）, 2.5±0.1wt% of methyl centralite, 5.0±0.15wt% of catalyst and 1.0±0.1wt% of other, the values of r of 49.4 years at 40℃, of TSAOT of 151.35℃ and of Tb of 163.01℃ were obtained.展开更多
The kinetics of the first order autocatalytic decomposition reaction of nitrocellulose (NC, 13.86% N) was stud-ied by using DSC. The results show that the DSC curve for the initial 50% of conversion degree of NC can b...The kinetics of the first order autocatalytic decomposition reaction of nitrocellulose (NC, 13.86% N) was stud-ied by using DSC. The results show that the DSC curve for the initial 50% of conversion degree of NC can be de-scribed by the first order autocatalytic equation dy/dt=-10^(16.3)exp(-181860/RT)y-10^(16.7)exp(-173050/RT)y(1-y) and that for the latter 50% conversiondegree of NC described by the reaction equations dy/dt=-10^(16.4)exp(-154820/RT)y(n=1) and dy/dt=-10^(16.9)exp(-155270/RT)y^(2.80)(n≠1).展开更多
A method of estimating the kinetic parameters and the critical rate of temperature rise in the thermal explosion for the autocatalytic decomposition of 3,4-bis（4＇-nitrofurazan-3＇-yl）-2-oxofurazan （BNFOF） with no...A method of estimating the kinetic parameters and the critical rate of temperature rise in the thermal explosion for the autocatalytic decomposition of 3,4-bis（4＇-nitrofurazan-3＇-yl）-2-oxofurazan （BNFOF） with non-isothermal differential scanning calorimetry （DSC） was presented. The rate equation for the decomposition of BNFOF was cstablished, and information was obtained on the rate of temperature increase in BNFOF when the empiric-order autocatalytic decomposition was converted into thermal explosion.展开更多
基金We are grateful to the National Natural Science Foundation of China （No. 20573098）
文摘A method of estimating the safe storage life （τ）, self-accelerating decomposition temperature （TsADT） and critical temperature of thermal explosion （Tb） of double-base propellant using isothermal and non-isothermal decomposition behaviours is presented. For double-base propellant composed of 56±1wt% of nitrocellulose （NC）, 27±0.5wt% of nitroglycerine （NG）, 8.15±0.15wt% of dinitrotoluene （DNT）, 2.5±0.1wt% of methyl centralite, 5.0±0.15wt% of catalyst and 1.0±0.1wt% of other, the values of r of 49.4 years at 40℃, of TSAOT of 151.35℃ and of Tb of 163.01℃ were obtained.
基金the Science and Technology Foundation of Shaanxi Key Laboratory of Physico-Inorganic Chemistry (No. 29-3, 2001), and the Science and Technology Foundation (No. 514550101) of Propellant and Explosive Combustion of China.
文摘The kinetics of the first order autocatalytic decomposition reaction of nitrocellulose (NC, 13.86% N) was stud-ied by using DSC. The results show that the DSC curve for the initial 50% of conversion degree of NC can be de-scribed by the first order autocatalytic equation dy/dt=-10^(16.3)exp(-181860/RT)y-10^(16.7)exp(-173050/RT)y(1-y) and that for the latter 50% conversiondegree of NC described by the reaction equations dy/dt=-10^(16.4)exp(-154820/RT)y(n=1) and dy/dt=-10^(16.9)exp(-155270/RT)y^(2.80)(n≠1).
基金Project supported by the National Natural Science Foundation of China （No. 20573098）, the Science and Technology Foundataon of the National Defence Key Laboratory of Propellant and Explosive Combustion of China （No. 51455010）.
文摘A method of estimating the kinetic parameters and the critical rate of temperature rise in the thermal explosion for the autocatalytic decomposition of 3,4-bis（4＇-nitrofurazan-3＇-yl）-2-oxofurazan （BNFOF） with non-isothermal differential scanning calorimetry （DSC） was presented. The rate equation for the decomposition of BNFOF was cstablished, and information was obtained on the rate of temperature increase in BNFOF when the empiric-order autocatalytic decomposition was converted into thermal explosion.
