喷雾干燥法制备微米级球形RDX复合颗粒及性能表征  

Micron grade-spherical RDX compound particles prepared by spray dryingand its properties characterization

作　　者：王彩玲[1] 王江[2] 刁小强[1] 李小东[2] 

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]中北大学化工与环境学院,山西太原030051

出　　处：《中国胶粘剂》2015年第10期8-11,共4页China Adhesives

基　　金：国防基础产品创新计划火炸药科研专项(JCKY0418)

摘　　要：以氟橡胶（F2602）为黏合剂,采用喷雾干燥技术制备了微米级RDX（黑索金）/F2602复合含能微球,并对其微观形貌、成分、热分解性和撞击感度等进行了探讨。研究结果表明：喷雾干燥法制备的RDX/F2602复合颗粒呈球形状结构,其粒径为0.5~7.0 mm,并且没有引入杂质;与原料RDX相比,喷雾干燥法制备的球形RDX/F2602复合颗粒之热分解表观活化能（E）从186.42 k J/mol降至183.55 k J/mol、热爆炸临界温度（Tb）从224.49℃升至235.37℃,并且其撞击感度明显下降[特性落高值（H50）从19.01 cm升至75.17 cm]。With fluorine rubber （F2602） as binder, a micron grade-RDX （cyclonite）/F2602 compound energy containing microsphere was prepared by spray drying, and its microstructure, composition, thermal decomposition and impacting sensitivity were discussed. The research results showed that the RDX/F2602 compound particles prepared by spray drying had the spherical structure, its particle size was 0.5-7.0 μm, but the impurities weren＇ t introduced into the system. Compared to raw RDX and spherical RDX/F2602 compound particles prepared by spray drying, the apparent activation energy （E） at thermal decomposition of the latter was decreased from 186.42 k J/tool to 183.55 kJ/mol, the thermal explosion critical temperature （Tb） of the latter was increased from 224.49 ℃ to 235.37 ℃, and the impacting sensitivity of the latter was also obviously decreased because itsH50 was increased from 19.01 cm to 75.17 cm.

关 键 词：炸药 喷雾干燥 球形 黑索金 热分解 撞击感度 

分 类 号：TQ560.72[化学工程—炸药化工] TQ433.42