摘要
为研究粘结压实药柱的解体与强度之间的关系及表层处理方法对解体与燃烧渐增性能的影响,分别采用升温直接压实法及乙醇/丙酮高温热蒸汽软化法将预处理后的太根小粒药压实成高密度药柱,再进行表层处理,得到待测的压实药柱样品,利用材料试验机测试样品的常温压缩力学性能;进行中止燃烧实验,并用数据采集系统记录燃烧中止前燃烧室内的压力-时间曲线,分析样品的解体及渐增性燃烧性能。与升温直接压实法相比,高温醇酮蒸汽软化法制得的样品压缩力学性能增强,药粒分裂、解体相对压力区间展宽,燃烧较为平稳。经表层钝感处理后的样品,起始动态活性明显降低。结果表明:高温醇酮蒸汽软化法制得的样品在保持一定力学性能时内层药粒易于分裂。选择合理的表层处理方法能较好抑制粘结压实药柱起始阶段的动态活性,解体过程能得到较好的控制,具有较好的燃烧渐增性。
To investigate the relationship between deconsolidation and adhesion strength and influence of surface treatment method on the deconsolidation and progressive combustion, high temperature molding technique and high-temperature solvent vapor of Alcohol/Acetone were used to consolidate double-base oblate sphere propellant standard grains plasticized with triethyle- neglycol dinitrate （TEGN） （TEGN propellants） to high-density propellants charge,respectively. After pre-deconsolidation treatment the consolidated charges were obtained and the charges were coated by three kinds of surface treatment methods. Their static mechanic properties and pressure history during interrupted burning process were recorded by material test machine and interrupted burning test, respectively. Compared with molding technique, the static compression strength of consolidated sample prepared by the method of high temperature solvent vapor of Alcohol/Acetone increased, and the deconsolidation range became broaden. The combustion de- consolidation process was stable. Dynamic vivacity of sample coated by deterrent decrease dsignif- icantly. Results show that the consolidated charge prepared by the method of high temperature solvent vapor of Alcohol/Acetone is easy to deconsolidate while keeping mechanic properties to some extent. Reasonable surface treatment can inhibit the initial dynamic vivacity of consolidated charge. The highburning progressivity can be obtained by the smart control of deconsolidation process.
出处
《弹道学报》
CSCD
北大核心
2013年第3期70-74,共5页
Journal of Ballistics
基金
国防973项目
关键词
发射药
压实装药
力学性能
解体
中止燃烧
渐增性燃烧
propellants
consolidated charge
mechanic properties
deconsolidation
interrupted burning
progressive combustion
