Estane/Al复合钝感包覆CL-20的研究

Research on Insensitivity of CL-20 Coated with Estane/Al

为了提高六硝基六氮杂异伍兹烷(CL-20)炸药的安全性能,采用水悬浮法制备了CL-20/Estane和CL-20/Estane/Al复合炸药,并用扫描电镜(SEM)、X-射线衍射仪(XRD)和差示扫描量热法(DSC)对产物进行了表征及性能测试,按GJB 772-1997方法测试了其撞击感度。结果表明:水悬浮包覆法可以制备CL-20/Estane/Al复合造型粉,CL-20的晶型仍为ε型,说明水悬浮包覆工艺不会改变CL-20主体炸药的晶型;与原料CL-20相比,含1%铝粉的CL-20/Estane/Al包覆样品的特性落高提高了26.4cm,热爆炸临界温度提高了8.15℃,且Al可以有效提高炸药的放热量。

To improve the safety of CL-20,the adhesives of Estane and Al were used to coat CL-20 via solvent-slurry method.Scanning electron microscopy(SEM),X-ray diffraction(XRD)and differential scanning calorimetry(DSC)were employed to characterize the morphology,crystal form and thermal decomposition properties of the samples,respectively.Their impact sensitivity were tested by GJB 772-1997.The research results show that Estane/Al modified CL-20 composite is prepared successfully by solvent-slurry method,the crystal type of CL-20 is stillεtype,which indicate the solvent-slurry method doesn’t change the crystal form of CL-20.Compared to raw CL-20,the character drop height of CL-20/Estane/Al with 1%content of Al powder is increased by 26.4cm,and the critical temperature of thermal explosion is improved by 8.15℃,which show that Al can effectively increase the heat release of explosives.