摘要
采用绝热加速量热仪(ARC)对3种HMX基PBX炸药(10#-159、聚奥-10、聚奥-9)和单质炸药HMX在绝热条件下的热分解行为进行了研究,得到了绝热分解温度、温度转化分数随时间的变化曲线和温升速率、压力随温度的变化曲线,计算了绝热分解反应动力学参数和自加速分解温度SADT,以SADT作为比较4种炸药热稳定性的判据。结果表明,4种炸药的绝热分解过程分为延滞期、加速期、降速期和残渣分解期;4种炸药均经历了较长的延滞期和短暂的加速期,放热剧烈并伴随明显的压力效应;10#-159、聚奥-10、聚奥-9和HMX的初始分解温度分别为89.95℃、104.70℃、114.41℃、153.58℃,25kg标准包装条件下的SADT分别为80.90℃、111.71℃、119.10℃、187.86℃,4种炸药的热稳定性排序为:HMX>聚奥-9>聚奥-10>10#-159。
The thermal decomposition behaviors of PBX based on HMX-10#-159(10#-159),PBX based on HMX-10(JO-10),PBX based on HMX-9(JO-9)and single-compound explosive HMX under the adiabatic condition were studied by an accelerating rate calorimeter(ARC).The changing curves of adiabatic decomposition temperature and temperature conversion rate fraction with time,and temperature rise rate and pressure with temperature were obtained.The kinetic parameters of adiabatic decomposition and self-accelerating decomposition temperature(SADT)were calculated.SADT was used as the criterion of comparing the thermal stability of four kinds of explosives.Results show that the adiabatic decomposition of four kinds of explosives can be divided into four stages:induction period,acceleration period,deceleration period and decomposition of residue.Four kinds of explosives are experienced in long induction period and short acceleration period,and releasing heat rapidly and with obvious pressure effect.The initial decomposition temperature of 10#-159,JO-10,JO-9and HMX are 89.95,104.70,114.41 and 153.58℃,respectively and the SADT under 25 kg packaging standard condition are 80.90,111.71,119.10 and 187.86℃,respectively.The thermal stabilities of four kinds of explosives decrease in the order HMX>JO-9>JO-10 >10#-159.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2015年第5期54-59,共6页
Chinese Journal of Explosives & Propellants
关键词
物理化学
HMX
聚奥炸药
绝热加速量热仪
热分解动力学
热稳定性
physical chemistry
HMX
JO-mixed explosive
acceleratiog rate calorimeter(ARC)
thermal decomposition kinetics
thermal stability
