超临界流体反溶剂法制备超细HMX传爆药  

Preparation of Ultra-fine Booster Explosive Based on HMX by Supercritical Anti-solvent Technique

作　　者：陈亚芳[1] 王保国[1,2] 张景林[1] 高敏[2] 

机构地区：[1]中北大学地下目标毁伤技术国防重点学科实验室,山西太原030051 [2]军械工程学院博士后工作站,河北石家庄050003

出　　处：《火炸药学报》2011年第5期46-49,共4页Chinese Journal of Explosives & Propellants

基　　金：兵器装备预先研究项目(HZY09020401-2);总装预研基金项目(9140A05090410BQ0404);中国博士后面上基金项目(20100481489)

摘　　要：为了克服超细炸药在常规包覆过程中易团聚的缺点,采用超临界流体反溶剂法(SAS)制备了以亚微米HMX为主体炸药的超细传爆药,探讨了工艺条件对亚微米HMX包覆效果的影响。结果表明,影响亚微米HMX包覆效果的主要因素有初始浓度、系统温度、系统压力、平均压力升高速率和平均压力下降速率。在加入20mL的乙酸乙酯、系统压力9.5MPa、系统温度50℃、平均压力升高速率3.0MPa/min、平均压力下降速率4.0MPa/min的条件下,超细传爆药的粒径为4～8μm,H50最高(即包覆效果最好),冲击波感度的隔板值比JO-9C(Ⅰ型)传爆药降低35.27%。In order to avoid defects of the ultra-fine explosive which was easy to agglomerate in the course of general coating,ultra-fine booster explosive based on sub-micron HMX was prepared by supercritical anti-solvent（SAS） technique.The influence of technical condition on the coating effect was studied.Test results show that the major factors affecting coating effect of sb-micron HMX are： initial solution concentration,system temperature,system pressure,average pressure increase velocity and average pressure decrease velocity.Under the conditions of volum of ethyl acetate 20 mL,system pressure 9.5 MPa,system temperature 50℃,average pressure increase velocity 3.0 MPa/min,average pressure decrease velocity 4.0 MPa/min,the grain diameter of ultra-fine booster explosive is 4-8 μm.Its characteristic drop of impact sensitivity is the highest and gap thickness of shock wave sensitivity is decreased by 35.27% compared with that of JO-9C（Ⅰ） booster explosive.

关 键 词：材料科学 超细传爆药 亚微米HMX 超临界流体反溶剂(SAS) 包覆效果 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ564[化学工程—炸药化工]