NC/Bu-NENA基推进剂性能研究(Ⅲ): 安定性、力学性能及机械感度  

Study of NC/Bu-NENA based propellant’s properties(Ⅲ):stability,mechanical property,mechanical sensitivity

作　　者：袁志锋[1,2] 胡松启[1] 韩进朝 赵昱[2] 李普瑞[2] 王月梅[2] 裴江峰[2] 谢五喜[2] 赵凤起[2] YUAN Zhifeng;HU Songqi;HAN Jinchao;ZHAO Yu;LI Purui;WANG Yuemei;PEI Jiangfeng;XIE Wuxi;ZHAO Fengqi(Science and Technology on Combustion,Internal Flow and Thermo-Structure Laboratory,Northwestern Polytechnical University,Xi’an 710072,China;Xi’an Modern Chemistry Research Institute,Xi’an 710065,China)

机构地区：[1]西北工业大学燃烧、热结构与内流场重点实验室,西安710072 [2]西安近代化学研究所,西安710065

出　　处：《兵器装备工程学报》2023年第9期108-113,194,共7页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(22105157)。

摘　　要：为了研究丁基-硝氧乙基硝胺(Bu-NENA)对NC基推进剂安定性、力学性能及机械感度的影响,通过吸收-压延的方法制备了推进剂样品,测试了Bu-NENA的酸碱度、PH值以及阿贝尔安定性,获得了推进剂的拉伸强度、延伸率、抗冲击强度、玻璃化温度、动态力学性能、撞击感度及摩擦感度,分析探讨了表征Bu-NENA安定性的方法,NC/Bu-NENA基推进剂的热安定性、力学性能和机械感度的变化及机理。结果表明:采用酸碱度和纯度表征Bu-NENA的安定性比阿贝尔试验更贴合实际,Bu-NENA替代NG后推进剂的热安定性更好,甲基紫变色时间达到95 min(120℃);替代后推进剂的拉伸强度下降,延伸率和抗冲击强度大幅度提高,其中-40℃低温延伸率提高74.73%;玻璃化温度前移11.2℃,可能对推进剂制备工艺产生正面的影响并提高推进剂制备过程中的安全性;机械感度明显下降,其原因可能是Bu-NENA的自身感度低和对NC的塑化效果更强。In order to investigate the effect of N-butyl-N-nitratoethylnitramine(Bu-NENA)on stability,mechanical property,mechanical sensitivity of NC based propellants,the propellant samples were prepared through a solventless extrusion technique.The acidity and PH value,and Abel test value of Bu-NENA were tested,and the strength of extension,elongation,hock strength,glass transition temperature,dynamic mechanics performance,impact sensitivity and friction sensitivity of propellant were obtained.The method to represent the thermal stability of Bu-NENA,the change and mechanism of thermal stability,mechanical properties,mechanical sensitivities of NC/Bu-NENA based propellant was studied.The results showed that:It was better to adopt acidity to represent thermal stability of Bu-NENA;when NG was replaced by Bu-NENA,the thermal stability of propellant was better,the methyl violet test time was 95 min(120℃);tensile strength was reduced,elongation and shock strength was enhanced rapidly,the elongation in-40℃enhanced by 74.73%,the glass-transition temperature was lower by 11.2℃,so it could lead positive influence to the preparation technology of NC/Bu-NENA based propellant and enhance the safety in the preparation process;mechanical sensitivities was reduced signally and the reason perhaps is the mechanical sensitivity of Bu-NENA is lower and the plasticizing capacity of Bu-NENA on NC is better than NG.

关 键 词：Bu-NENA 推进剂 热安定性 力学性能 机械感度 

分 类 号：TQ0[化学工程]