固体火箭技术2018，Vol.41Issue(2)：214-218,5.DOI:10.7673/j.issn.1006-2793.2018.02.013
两种喷雾结晶法制备超细CL-20
Ultrafine CL-20 prepared by two kinds of spraying crystallization method
徐文峥 1平超 1王晶禹 1庞兆迎 1邢江涛1
作者信息
- 1. 中北大学 环境与安全工程学院,太原 030051
- 折叠
摘要
Abstract
Ultrafine particles of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane(CL-20)with different parti-cle sizes were prepared by spraying method at ambient pressure and spraying evaporation method.Scanning electron microscopy (SEM),X-ray diffraction(XRD)and differential scanning calorimetry(DSC)were used to characterize the morphology,particle size and crystal type of the obtained samples.Kissinger's method and Zhang-Hu-Xie-Li's formula were used to calculate the thermal decomposition reaction rate and critical temperature of the CL-20 particles.The impact sensitivity of ultrafine CL-20 was tested ac-cording to Chinese standard GJB 772A—97 method.The results show that the particle sizes of CL-20 obtained by two of spraying methods are about 300 nm and 800 nm.The polymorphs of two kinds of particles areβandε.The critical temperature of thermal explo-sion of these two types of ultrafine CL-20 was 228.2 ℃ and 233.2℃.Besides,the impact sensitivity of ultrafine CL-20 was signifi-cantly reduced comparing to the raw CL-20.关键词
超细CL-20/喷雾/球形化/热安定性/撞击感度Key words
ultrafine CL-20/spray/spherical/thermal stability/impact sensitivity分类
航空航天引用本文复制引用
徐文峥,平超,王晶禹,庞兆迎,邢江涛..两种喷雾结晶法制备超细CL-20[J].固体火箭技术,2018,41(2):214-218,5.
