相稳定硝酸铵及其混合物的热分解

Thermal Decomposition of Phase Stabilized Ammonium Nitrate and Its Mixtures

硝酸铵(AN)是低特征信号推进剂和无烟推进剂的首选氧化剂,但存在点火、燃烧困难等问题。降低硝酸铵的热分解温度,促进AN的热分解是解决硝酸铵推进剂点火和燃烧困难的途径之一。本实验采用DSC和TG-DTG技术研究了金属氧化物、金属盐、含能粘合剂和六硝基六氮杂异伍兹烷(HNIW)对AN热分解的影响。结果表明,催化剂在一定程度上都降低了AN的吸热分解温度;含能组分加速了AN的放热分解过程。

Ammonium nitrate（AN） , used as oxidizer of low signature and smokeless propellants, is a promising candidate. However there are some problems for AN-based propellant in ignition and combustion. One way to resolve ignition and combustion difficulties for AN-based propellant is to lower AN decomposition temperature, and to accelerate the thermal decomposition of AN. Effect of metal oxide, organic metal salt （OME） , energetic binder and hexanitrohexaazaisowurtzltane（HNIW） on the thermal decomposition of AN are studied by DSC and TG-DTG. Results show that catalysts lower the endothermic decomposition temperature of AN to a certain extent and energetic components accelerate the exothermic decomposition process of AN.