基于微流控技术制备窄粒径分布的微米级高氯酸铵  

Preparation of Micron-Sized Ammonium Perchlorate with Narrow Particle Size Distribution Based on Microfluidic Technology

作　　者：郭云雁 刘意 关强 马中亮 安崇伟[1] 武碧栋 GUO Yun-yan;LIU Yi;GUAN Qiang;MA Zhong-liang;AN Chong-wei;WU Bi-dong(School of Environmental and Safety Engineering,North University of China,Taiyuan,030051;China Academy of Launch Vehicle Technology,Beijing,100076)

机构地区：[1]中北大学环境与安全工学院,山西太原030051 [2]中国运载火箭技术研究所,北京100076

出　　处：《火工品》2024年第6期33-39,共7页Initiators & Pyrotechnics

基　　金：国家自然科学青年基金(No.22005275)。

摘　　要：为了制备形貌规则、窄粒径分布的微米级高氯酸铵(AP),基于微流控技术设计了一种微通道反应器,通过计算流体动力学(CFD)模拟了不同长度微通道的混合效果,确定了微通道反应器的最佳结构,并通过实验研究了溶剂种类、溶剂和非溶剂流速比对AP晶体形貌和粒径的影响。结果表明:溶剂的混合效率与微通道的长度成正相关;细化后AP的晶体结构不会发生变化;溶剂的改变对AP晶体形貌的影响较大;减小溶剂-非溶剂流速比可以有效减小AP晶体的横向粒径;细化后AP的热分解温度有所提前。该研究为制备微米级AP提供了一种安全、快速的途径。In order to prepare micrometer sized ammonium perchlorate(AP)with regular morphology and narrow particle size distribution,a microchannel reactor was designed based on microfluidic technology.The mixing effect of microchannels with different lengths was simulated through computational fluid dynamics(CFD),and the optimal structure of the microchannel reactor was determined.The effects of solvent type,solvent and non solvent flow rate ratio on the morphology and particle size of AP crystals were experimentally investigated.The results show that the mixing efficiency of solvents is positively correlated with the length of microchannels;The crystal structure of AP will not change after refinement;The change of solvent has a significant impact on the morphology of AP crystals;Reducing the solvent and non solvent flow rate ratio can effectively reduce the lateral particle size of AP crystals;The thermal decomposition temperature of AP has been advanced after refinement.This study provides a safe and rapid approach for preparing micrometer sized AP.

关 键 词：微流控 高氯酸铵 制备 CFD模拟 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ560.6[化学工程—炸药化工]