摘要
为了优化3,3′-二氨基-4,4′-氧化偶氮呋咱(DAAF)的形貌和粒径,采用微流控技术进行调控,以二甲基亚砜(DMSO)为溶剂,去离子水为非溶剂制备细化DAAF,研究了炸药浓度和溶剂-非溶剂流速比对DAAF形貌和粒径的影响。通过扫描电子显微镜(SEM)、Zeta电位分析仪、X射线粉末衍射仪(XRD)、差式扫描量热法(DSC)、热重分析(TG)、BAM落锤撞击感度仪和BAM摩擦感度仪对DAAF产品进行形貌、粒度、晶体结构、热性能和机械感度表征。结果表明,细化后的DAAF晶体结构未发生改变,与原料晶型保持一致。当其浓度为10 g/L时,可以制备出“爆米花状”的球形DAAF,粒径分布在1.47~8.22μm;浓度为30 g/L能够制备出0.69~2.99μm的多面长棒状DAAF;浓度为50 g/L时可获得尺寸小、粒度分布集中(80~460 nm)的纳米级DAAF。与原料相比,细化的DAAF热分解温度减小;细化前后DAAF的机械感度保持一致。
To optimize the morphology and particle size of 3,3′-diamino-4,4′-oxide azofuran(DAAF),the refined DAAF was prepared by using microfluidic technology to regulate it and using dimethyl sulfoxide(DMSO)and ionized water as the solvent and antisolvent.The morphology,particle size,crystal structure,thermal properties and mechanical sensitivities of DAAF products were characterized by scanning electron microscopy(SEM),Zeta potential analyzer,X-ray powder diffractometer(XRD),differential scanning calorimetry(DSC),thermogravimetric analysis(TG),BAM drop hammer impact sensitivity and BAM friction sensitivity instrument.The results show that the crystal structure of refined DAAF is consistent with that of raw material.When the concentration is 10 g/L,a“popcorn-like”spherical DAAF can be prepared with particle size distribution of 1.47—8.22μm.At concentration of 30 g/L multi-faceted long rod-shaped DAAF can be prepared with particle size of 0.69—2.99μm.At a concentration of 50 g/L,nanoscale DAAF with small size and concentrated particle size distribution(80—460 nm)can be obtained.Compared with raw materials,the thermal decomposition temperature of refined DAAF decreases.The mechanical sensitivity of DAAF was consistent before and after refinement.
作者
郭云雁
周近强
刘意
武碧栋
安崇伟
马中亮
王晶禹
GUO Yun-yan;ZHOU Jin-qiang;LIU Yi;WU Bi-dong;AN Chong-wei;MA Zhong-liang;WANG Jing-yu(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Shanxi Engineering Research Center for Ultrafine Powder,Taiyuan 030051,China)
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2023年第9期797-802,I0001,共7页
Chinese Journal of Explosives & Propellants
基金
国家自然科学青年基金(No.22005275)。
