HTPB／HMX复合粒子的制备及其机械感度研究  

Preparation and Mechanical Sensitivity of HMX/HTPB Composite Particles

作　　者：安崇伟[1,2] 郭效德[1] 谢五喜[3] 宋小兰[1] 王毅[1] 李凤生[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094 [2]中北大学化工与环境学院,山西太原030051 [3]西安近代化学研究所推进剂研究部,陕西西安710065

出　　处：《南京理工大学学报》2009年第2期267-271,共5页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(50602024,50306008)

摘　　要：为了降低奥克托今(HMX)的机械感度,以端羟基聚丁二烯(HTPB)和甲苯二异氰酸酯(TDI)为包覆材料,采用相分离法对HMX颗粒进行了表面包覆,制备了HTPB/HMX复合粒子。采用SEM和XPS对包覆样品进行表征,对包覆前后样品的机械感度进行测试和对比。探讨了包覆工艺对包覆效果和机械感度的影响,并分析了包覆机理和钝感机理。结果表明,当用HT-PB和TDI同时包覆时,样品易出现大块粘连,摩擦感度降低,而撞击感度不降反升。经1%(质量分数)HTPB包覆后,HMX的摩擦爆炸概率P由100%降至46%,特性落高H50由32.5 cm降至28.6 cm。而先用HTPB包覆再用TDI包覆时,样品的流散性良好,包覆层均匀,机械感度明显降低;当HTPB的包覆量为1%时,H50可升高到45.7 cm,P可降至32%。To reduce the mechanical sensitivity of cyclotetramethylene tetranitramine （ HMX）, hydroxyl terminated polybutadiene（HTPB） and toluene diisocyanate （TDI） are used to coat HMX by the method of phase separation. The coated samples are characterized by SEM （scanning electron microscope） and XPS （X-ray photoelectron spectrometry）. The mechanical sensitivity of unprocessed and coated HMX samples are measured and contrasted. The influence of coating processing on coating effect and mec.hanical sensitivity are discussed, and the coating mechanism and insensitive mechanism are analyzed. The results show that when coated with HTPB and TDI simultaneously samples form agglomeration easily and their friction sensitivity reduces, however the impact sensitivity increases. After coated with 1% HTPB, the drop height H50 of HMX decreases from 32.5 cm to 28.6 cm and explosion probability P decreases from 100% to 46%. When firstly coated with HTPB and then with TDI, the samples disperse well and the coating layers become even. The mechanical sensitivity reduces obviously. When the covering mass amount of HTPB is 1% , H50 increases to 45.7 cm, and P decreases to 32%.

关 键 词：奥克托今 端羟基聚丁二烯 表面包覆 复合粒子 机械感度 

分 类 号：TQ564[化学工程—炸药化工]