溶胶-凝胶法制备RDX/Fe_2O_3-Al_2O_3纳米复合含能材料

Preparation of RDX/Fe_2O_3-Al_2O_3 Nano-composite Energetic Material by Sel-Gel

为了解决传统复合含能材料能量释放速度慢的劣势,通过溶胶-凝胶法及超临界干燥法制备了RDX质量分数为90%的RDX/Fe2O3-Al2O3三元纳米复合含能材料。得到当VDMF∶V乙酸乙酯=2∶1,陈化时间24 h,超临界干燥条件为:压力15 MPa,45℃,进气速率16 L/h,保压力30 min,换气速度2 L/h,换气时间40 min,泄压速率3 bar/min时,RDX/Fe2O3-Al2O3复合炸药复合均匀,粒度在50 nm左右。同时复合物的机械感度较原料RDX及机械混合的复合物明显降低,安全性得到很大提高。

In order to avoid the shortcomings of traditional composite energetic materials, slow energy release speed, the sol-gel method and supercritical drying method were used to prepare the tri-component nano-composite energetic material RDX/Fe2Os-A1203. RDX mass fraction of it is 90 %. It turned out that when VDMF ~ Vacetidin=2 ~ 1, aging time was 24 h, supercritical drying conditions： pressure 15 MPa, 45 ＂C, the intake rate 16 L/h, holding pressure 30min, ventilation rate 2 L/h, ventilation time 40min, relief rate 3 bar/min, RDX/Fe203-A12Os was uniformly composited. Its particle size is about 50 nm. Composite material＇s mechanical sensitivity was significantly reduced than raw RDX and mechanical mixing compound. Security has been greatly improved.