丙烯酸酯橡胶对CL-20的包覆降感及改性  

Sensitivity Reduction and Modification of CL-20 Coated with ACM

作　　者：邢江涛[1] 徐文峥[1] 王晶禹[1] 申锦涛 

机构地区：[1]中北大学化工与环境学院,山西太原030051

出　　处：《火炸药学报》2017年第1期34-39,共6页Chinese Journal of Explosives & Propellants

摘　　要：以六硝基六氮杂异伍兹烷(CL-20)为主体炸药、分别以3种类型丙烯酸酯橡胶(ACM)(AR-71、AR-12、AR-14)和Estane 5703为黏结剂、以己二酸二辛酯(DOA)为增塑剂,进行分子动力学(MD)模拟。采用溶液-水悬浮法制备了6种CL-20基PBX,采用FE-SEM、XRD、DSC对其进行表征,并测试了其撞击感度。结果表明,ACM和增塑剂包覆在CL-20晶体表面,颗粒呈球形或椭球形,包覆后CL-20晶型仍为ε型。AR-71包覆的CL-20热安定性最好,热爆炸临界温度比Estane5703包覆的CL-20高2.07℃,同时在3种ACM包覆CL-20体系中,CL-20/AR-71体系的热安定性优于CL-20/AR-12和CL-20/AR-14。AR-71对CL-20降感起到很好的作用。增塑剂的引入有效改善了CL-20/AR-71和CL-20/Estane 5703复合粒子的热稳定性。其中CL-20/AR-71/DOA体系的热稳定性和热安全性最好,同时增塑剂也使CL-20/AR-71和CL-20/Estane5703复合粒子的机械感度降低。Using CL-20 as the main explosive,three types of acrylic rubber(ACM)(AR-71、AR-12、AR-14)and Estane5703 as binder and dioctyl adipate(DOA)as plasticizer,the molecular dynamics simulation was conducted and then six kinds of CL-20-based PBXs were prepared by solution-water slurrying method and characterized by FE-SEM,XRD and DSC,and their impact sensitivities were tested.The results show that the plasticizer and ACM are coated on the surface of CL-20 crystal and the particles are spherical or ellipsoidal.CL-20 crystal is stillεtype after being coated.The thermal stability of CL-20 is the best when CL-20 is coated by AR-71.The critical temperature of thermal explosion of CL-20 coated by AR-71 is 2.07℃ higher than that of CL-20 coated by Estane 5703.At the same time,the thermal stability of CL-20/AR-71 system is better than that of CL-20/AR-12 and CL-20/AR-14 in three types of CL-20 coated by the ACM.The binder AR-71 plays a very good role on reducing the sensitivity of CL-20.The introduction of plasticizer can effectively improve the thermal stability of CL-20/AR-71 and CL-20/Estane 5703 composite particles.The thermal stability and thermal safety of CL-20/AR-71/DOA system are the best,while the plasticizer also makes the mechanical sensitivity of CL-20/AR-71 and CL-20/Estane 5703 composite particles decrease.

关 键 词：丙烯酸酯橡胶:ACM CL-20 PBX 包覆 降感 热分析 己二酸二辛酯 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ560[化学工程—炸药化工]