火炸药学报2012，Vol.35Issue(6)：37-40,4.
超临界流体增强溶液扩散技术制备纳米CL-20及表征
Preparation and Characterization of Nano-CL-20 with Solution Enhanced Dispersion by Supercritical Fluids
摘要
Abstract
Nano-CL-20 was prepared with the solution of ethyl acetate through the process solution enhanced dispersion by supercritical fluids, and with the parameters of concentration 30%, pressure 9.0MPa, temperature 40℃ , solvent flow rate 5mL/min and CO2 flow rate 8kg/h. The morphology, particle size, size distribution and spherical degree of the sample before and after refinement were characterized by polarizing microscope, scanning electron mi-croscope(SEM), laser particle size analyzer and dynamic particle image analyzer. Crystal type of the refined CL-20 was identified by FT-IR and XRD. Thermal stability and impact sensitivity were measured. The results show that the edge of the refined particles is smooth and the shape is nearly spherical. The size distribution is uniform between l-2μm,and crystal type belongs to β. Compared with raw material, phase transformation temperatures postponed a-bout 30℃ , decomposition peak temperature advanced 6. 74℃ and impact sensitivity significantly reduced.关键词
材料科学/超临界流体增强溶液扩散技术/纳米CL-20/重结晶/撞击感度Key words
material science/solution enhanced dispersion by supercriticsal fluids/nano-CL-20/recrystallization/impact sensitivity分类
军事科技引用本文复制引用
尚菲菲,张景林,张小连,王金英..超临界流体增强溶液扩散技术制备纳米CL-20及表征[J].火炸药学报,2012,35(6):37-40,4.基金项目
基础产品创新计划火炸药科研专项(950836) （950836）
