催化剂对含细粒度HMX的硝胺推进剂高低压燃烧特性的影响  

Effects of catalyst on combustion characteristics of fine HMX nitramine propellants under high and low pressure

作　　者：贾小峰[1] 李葆萱[1] 王世英[2] 胡伟华 

机构地区：[1]西北工业大学航天学院,西安710072 [2]中国航天科技集团公司四院,西安710025 [3]第二炮兵驻航天四院军事代表室,西安710025

出　　处：《固体火箭技术》2010年第4期425-429,434,共6页Journal of Solid Rocket Technology

摘　　要：用水下声发射法测试推进剂药条不同压强下的燃速,按维也里公式r=bpn计算某压强段的压强指数,研究了催化剂辛基二茂铁(T27)、炭黑(C)和铬酸铅(Pr)不同含量及其复合使用对含细粒度HMX的硝胺推进剂高低压燃烧性能影响。结果表明,随着T27含量的提高,推进剂燃速相应提高,T27降低高压段压强指数,在低压段反而增大;C、Pr对推进剂的高压燃速影响不明显;随着C含量的增加,低压段压强指数降低,高压段先增加后降低,降低效果非常明显;Pr使低压段压强指数稍有降低,高压段压强指数反而升高;T27、C、Pr催化剂复合使用对高低压燃速无协同效应,对降低低压段压强指数无协同效应,在对降低高压段压强指数,具有协同效应,高压段压强指数可降低为0.359 9。Effects of different content of octylferrocene（T27）,carbon black（C）,lead chromate（Pr） and their combination on high and low pressure combustion characteristics of nitramine propellants containing fine HMX were studied on the basis of measuring the burning rates of propellant strands using underwater acoustic emission method.Pressure exponent in a certain pressure range was also calculated according to Veinni equation r=bpn.The results show that burning rate increases with the increase of T27 content.The use of T27 makes the pressure exponent decrease under high pressure,but increase under low pressure.C and Pr has no obvious effects on high pressure burning rate of the propellants.Pressure exponent under low pressure decrease with increase of C content,pressure exponent under high pressure increase first,then decrease markedly with increase of C content.The use of Pr makes pressure exponent decrease a little under low pressure,but makes pressure exponent increase under high pressure.Combination of T27,C and Pr has synergistic effects neither on high and low pressure burning rate,nor on decreasing of pressure exponent under low pressure,while it has synergistic effects on decreasing pressure exponent under high pressure.Pressure exponent under high pressure can be decreased to 0.359 9.

关 键 词：硝胺推进剂 燃烧特性 压强指数 催化剂 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]