摘要
为研究EI发射药的燃烧性能,基于EI发射药的制备过程及药形结构特征,对EI发射药的浸渍层分布、燃烧过程中药型尺寸及能量特性的变化进行了理论分析和实验验证。建立了EI发射药的燃速计算数学模型。制备了NG浸渍量分别为10%和15%的EI-1和EI-2样品。进行了密闭爆发器试验、显微切片照相。结果表明,NG浸渍量为15%时,火药力提高了10.14%,浸渍深度为0.168mm;根据实验数据计算EI发射药的u—p曲线,150MPa前EI发射药的燃速高于单基发射药,在150MPa后两者重合;由L-B曲线知EI-2发射药的燃烧渐增性较好。只要NG浸渍量和聚酯浸渍量配比合适,EI发射药的火药力和燃烧渐增性在一定范围内可以同步增加。
In order to study the combustion performance of EI gun propellant, according to its preparation process and structure feature, a theoretical analysis and an experimental validation were performed for the dipping layer distribution in grain and the changes of grain size and energetic characteristic in combustion process. A mathematic model of calculating the burning rate of EI gun propllant was established. The samples EI-1 and EL2 containing 10% and 15% of NG dipping reagent were prepared respectively. Closed bomb test and micrograph observation of grain slices were performed. Results show that for the sample containing 15% of NG dipping reagent, its impetus increases by 10. 14%, and dipping depth is about 0. 168 mm. According to the wp curves by calculating, the burn- ing rate of EI gun propellant is higher than that of single base propellant before 150 MPa, and these curves overlap with each other after 150 MPa and progressive burning performance of El-2 is better. As long as the dipping reagent ratio of NG to polyester is appropriate, both impetus and progressive burning performance of the modified propellant can get increasing in a certain range.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2012年第5期87-90,共4页
Chinese Journal of Explosives & Propellants
关键词
物理化学
燃烧
EI发射药
燃烧渐增性
密闭爆发器
火药力
physical chemistry
burning
El propellant
progressive combustion performance
closed bomb
impetus
