CAJ | 학술논문

采用超声喷雾辅助重结晶装置对RDX进行重结晶研究，以二甲基亚砜为溶剂，纯净水为非溶剂，制备了微米球形化RDX。用扫描电镜和激光粒度分析仪对RDX的形貌和粒度进行了表征，并测试了样品的热分解性能和撞击感度。结果表明：制备的样品呈球形，颗粒分布均匀，中值粒径为2.65μm；和原料相比，重结晶RDX的撞击感度明显降低，特性落高（H 50）由21.51cm升高到36.43cm。经过该重结晶工艺，RDX的活化能和热爆炸临界温度略有升高。
채용초성분무보조중결정장치대RDX진행중결정연구，이이갑기아풍위용제，순정수위비용제，제비료미미구형화RDX。용소묘전경화격광립도분석의대RDX적형모화립도진행료표정，병측시료양품적열분해성능화당격감도。결과표명：제비적양품정구형，과립분포균균，중치립경위2.65μm；화원료상비，중결정RDX적당격감도명현강저，특성락고（H 50）유21.51cm승고도36.43cm。경과해중결정공예，RDX적활화능화열폭작림계온도략유승고。
With the dimethylsulfoxide and purified water as solvent and anti-solvent respectively, spherical RDX particles sized in micrometer were produced via the method of ultrasound-and spray-assisted precipitation. Raw RDX and spherical RDX samples were characterized by scanning electron microscopy(SEM)and particle size analysis. The thermostability and impact sensitivity was also tested and analyzed. Results show that the precipitated RDX particles have spherical and ellipsoid morphology with a smooth surface, and the mean particle size of RDX is 2.65μm. Impact sensitivity tests indicated that spherical RDX is less sensitive than raw RDX. The drop height (H50) of RDX was increased from 21.51cm of raw RDX to 36.43cm of spherical RDX. Through the recrystallization process, the activation energy and thermal explosion of RDX slightly elevated.