纳米阵列式MoO_3/Al复合含能膜的制备与性能研究

Preparation and Performance Evaluation of Nano-array MoO_3/Al Composite Energetic Films

采用水热法在Ti片上成功地制备出MoO_3纳米阵列膜,并利用其作为氧化剂和基底,将纳米Al粒子电泳沉积到其表面制备出纳米阵列式MoO_3/Al复合含能膜。通过X射线衍射法(XRD)、场发射扫描电子显微镜(FE-SEM)、全自动比表面积及孔隙分析仪(BET)和差示扫描量热仪(DSC)对样品进行表征,考察了纳米Al粒子电泳沉积时间对复合含能膜放热性能的影响。结果表明,MoO_3纳米阵列膜主要由热力学稳定的正交相MoO_3纳米线阵列构成,此结构显著增大了MoO_3的比表面积,更有利于Al和MoO_3有效接触,提高二者的反应活性。当沉积时间为2min时纳米阵列式MoO_3/Al复合含能膜放热量最大为1589.0 J/g。

Nano-MoO3 arrays successfully grown on Ti films by hydrothermal method. Nano-array MoO3/Al composite energetic films were prepared through depositing nano-Al particles into the nano-MoO3 arrays by EPD. Samples were characterized by XRD,FESEM,BET and DSC. Effect of deposition time of nano-Al particles on the heat release was investigated. Results showed that nano-MoO3 arrays were composed of thermodynamically stable α-MoO3, Morphology of α-MoO3 was nanowire array which increased the surface area of MoO3 and achieved the effective contact between Al and MoO3,though reactivity of Al and MoO3 was improved. Heat release reached to the maximum of 1589. 0 J/g when the deposition time was2 minutes.