摘要
以丙酮为溶剂,采用L_9(3~4)正交实验优化了喷雾干燥制备球形HMX的工艺条件。利用扫描电镜(SEM)对优化条件下所得的球形HMX进行了表征。采用评分法定量分析了其形貌。结果表明,球形HMX的最优制备条件为:入口温度70℃,进料速率1.5 mL·min^(-1),喷雾气体流速473 L·h^(-1),质量分数1.5%。最优制备工艺条件下所得HMX颗粒的中值粒径为997.56 nm,晶型为β型。与HMX原料相比,球形HMX的撞击感度的特性落高提高28.21 cm。
Using acetone as solvent,the process conditions of preparing the spherical HMX by spray drying method were optimized by the orthogonal test L_9（ 3~4）,and the spherical HMX obtained under the optimal condition was characterized by scanning electron microscope（ SEM）. The morphology of the obtained HMX was quantitatively analyzed by the scoring method. Results show that the optimal preparation conditions of the spherical HMX are inlet temperature of 70 ℃,feed rate of 1. 5 mL·min^（- 1）,spraying gas flow rate of473 L·h^（- 1）,mass fraction of 1. 5%. The median particle size of the spherical HMX obtained under optimal experimental conditions is997. 56 nm and the crystalline form is the β type. Compared with raw HMX,the characteristic drop height of impact sensitivity for spherical HMX is increased by 8. 21 cm.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2016年第5期439-443,共5页
Chinese Journal of Energetic Materials
基金
武器装备预先研究项目(51305120201)
关键词
喷雾干燥
正交实验
球形HMX
撞击感度
spray drying
orthogonal experiment
spherical HMX
impact sensitivity
