固体推进剂的慢速烤燃行为与热分解特性的关系研究

利用同步差示扫描-热重联用仪（DSC-TG），扫描电镜（SEM）和慢速烤燃试验，对比分析了NEPE推进剂和HTPB推进剂的热分解特性与慢速烤燃行为的关系。结果表明：高氯酸铵（AP）温热分解过程形成的多孔性形貌是导致HTPB推进剂慢速烤燃响应剧烈的主要因素；由于硝酸酯在较低温度下放出热量，使得NEPE推进剂在AP、HMX分解反应前点火，其慢速烤燃响应较为温和。

Relationship between Slow Cook-off Behaviour and Thermal Decomposition Characteristics of Solid Propellant

The relationship between slow cook-off behaviour and thermal decomposition characteristics of NEPE propellant and HTPB propellant was analyzed by simultaneous differential scanning calorimetry and thermogravimetry (DSC-TG), scanning electronic microscope(SEM)and slow cook-off test. A porous state generated in the decomposition of ammonium perchlorate(AP)at low temperature is the main reason causing HTPB propellant reacting violently in the slow cook-off test. The energy released by nitrates at lower temperature enables NEPE propellant to ignite before AP and HMX begin to decompose, which show that NEPE propellant has a milder reaction in slow cook-off test.