【摘要】 为改进我国第一代桥塞投放工具用复合推进剂燃烧残渣率大和燃速高的缺点,以KNO3/AP/HTPB体系为基础设计了一种桥塞投放工具用复合推进剂。研究了不同种类降速剂、AP粒度以及催化剂对该推进剂的燃速、残渣率以及燃烧稳定性的影响。结果表明,降速剂草酸铵对复合推进剂有较好的降低燃速和残渣率的作用,AP粒径的增加有利于降低推进剂的燃速,加入催化剂可改善此推进剂燃烧稳定性。此复合推进剂经数百次油井桥塞座封施工证实,具有低残留、低燃速的优点,其综合性能显著优于国内第一代产品,达到国外先进水平。更多还原

【Abstract】 In order to improve the disadvantages of high residue percentage after combustion and low burning rate in the first generation composite propellant used in the bridge-plug equipment in oil-well,a formulation of composite propellant based on the KNO3/AP/HTPB system was designed.The effect of different burning rate inhibitor,granularity of AP and catalyst on the burning rate,residue percentage after combustion and combustion stability of the composite propellant were studied.The results show that,burning rate inhibitor,ammonium oxalate,has better function of decreasing the burning rate and residue percentage after combustion for the propellant.The increase of the granularity of AP is helpful to decrease the burning rate of the propellant.The catalyst can improve the combustion stability of the propellant.It is tested that,the composite propellant has the advantages of low residue percentage and low burning rate,compared with the first generation product and the same type foreign product,the comprehensive characteristic of the propellant reach to the advanced level of foreign country.更多还原