RDX/RF纳米结构复合含能材料的孔结构研究

在黑索今(RDX)/间苯二酚-甲醛树脂(RF)纳米结构复合含能材料制备的基础上,研究了RF气凝胶和RDX/RF纳米结构复合含能材料的孔结构,计算了含10%、30%、50%、70%、80%RDX的复合材料RDX/RF的比表面积、总孔体积、平均孔径,并对RF气凝胶和不同复合材料的吸附脱附等温线、中孔分布和微孔分布进行了比较。用扫描电子显微镜(SEM)对其微观形貌进行了表征,利用X射线粉末衍射仪(XRD)对复合材料中RDX颗粒的晶粒度进行了研究,在34~38 nm之间。研究表明:RDX/RF复合材料的孔径在50 nm以下,随RDX含量的增加,比表面积、总孔体积变小,平均孔径则变大;通过RF气凝胶和RDX/RF纳米复合含能材料的吸附脱附等温线、中孔、微孔分布以及中孔微分总孔体积、微孔微分总孔体积的变化比较,认为RDX的填充对气凝胶的中孔影响较大。

Pore Structure of RDX/RF Nanostructured Composite Energetic Materials

After the preparation of hexahydro-1,3,5-trinitro-1,3,5-triazine/resorcinol-formaldehyde(RDX/RF) nanostructured composite energetic materials,the pore structures of RF aerogel and RDX/RF were characterized.Specific areas,total pore volumes and average pore diameters of RDX/RF with 10%,30%,50%,70%,80% RDX were calculated.Adsorptiondesorption isotherm curves,middle pores distribution curves and micropores distribution curves were compared together.Compared with RF aerogel,the specific area,total pore volume,composite materials have small and large average pore diameter.The mean diameter pf nano-crystal RDX in RDX/RF is 34-38 nm.The changes were caused by the filling of detonator RDX.The changes in adsorption-desorption isotherm,middle pore and micropore distribution,and total middle pore volumes of RDX/RF indicate that detonator RDX plays a key role in influencing middle pore of RF aerogel.