硝酸羟胺基液体推进剂的热安全性研究OA北大核心CSTPCD

In order to evaluate the safety of hydroxylamine nitrate(HAN)based liquid propellants in production,storage,transportation and use,thermal decomposition process of the propellant was studied using a differential scanning calorimeter(DSC),and thermal safety parameters were also calculated.Changes of impact energy with temperature were tested by a BAM impact sensitivity tester.The results show that the apparent activation energies obtained by K-A-S,F-W-O,and Starink methods are 154.8,154.6 kJ/mol and 155.6 kJ/mol,respectively.Thermal decomposition free energy,activation enthalpy,and activation entropy are 128.2,150.9 kJ/mol and 48.9 J/mol,respectively.Critical temperature of thermal explosion is204.2℃,and adiabatic time to explosion is about3.92-55.52 s.Using AKTS software,the tempera-ture corresponding to the induction period of 2,4,8 h and24 h is123.4,119.1,114.8℃ and 108.2℃,respectively.The self-accelerating decomposition temperature of packaging weights of 0.01,5.00,25.00,50.00 kg and 100.00 kg are 116,104,103,102℃and 101℃,respectively.Critical impact energies at different temperatures are>50(25℃),40(80℃),25(90℃),10 J(100℃) and 5 J(110℃).It is necessary to avoid high temperature caused by collision during the production,storage,and transportation of HAN based liquid propellants.