火炸药学报2017，Vol.40Issue(4)：86-91,6.DOI:10.14077/j.issn.1007-7812.2017.04.016
基于动力学过程的固体推进剂降速机理
Dynamical Mechanism for Reducing Burning Rate of Solid Propellant
摘要
Abstract
Based on the Langmuir adsorption theory and proton transfer mechanism of AP decomposition, the conservation of matter between solid and gas phases was utilized to determine the concentrations of NH3 and HClO4 in the gas phase for AP decomposing at different rates.Combining the gas concentrations with the reactions occurring on the solid-gas interfaces, a dynamic mechanism is proposed to elucidate the effects of changes in pressure on propellant burning rates,and physical processes had been deduced.According to experiments of AP/burning rate inhibitor (CaCO3 or NH4C2O4), results of both TG-DSC and burning rate test were compared.The results show that this mechanism can explain the processes that negative burning-rate catalysts act to effect the burning rates and pressure exponents.CaCO3 can decrease the thermal decomposition temperature of AP.So it is useful for controlling the pressure cxponents of propellants at high pressure.Nevertheless,NH4C2O4 do not have this effect.关键词
高氯酸铵/AP/降速机理/郎缪尔吸附理论/固体推进剂/动力学/降速剂Key words
ammonium perchlorate/AP/mechanisms for decreasing burning rates/Langmuir adsorption theory/solid propellant/dynamical mechanism/burning rate inhibitor分类
军事科技引用本文复制引用
吴世曦,苗楠,姚南,李忠友,唐承志,庞爱民..基于动力学过程的固体推进剂降速机理[J].火炸药学报,2017,40(4):86-91,6.基金项目
总装备部预先研究项目(No.9140A28020115HT42001) （No.9140A28020115HT42001）
