KNO3/GO复合含能材料的制备与表征?

分别采用重结晶法、中和法和溶剂-非溶剂法制备了硝酸钾/氧化石墨烯(KNO3/GO)复合含能材料。通过负载前后质量的变化对KNO3的负载量进行比较,并运用X射线衍射能谱(XRD)、傅里叶红外光谱(FTIR)、场发射扫描电镜(FESEM)和热重/差热分析(TG/DTA)对复合材料进行了表征。结果表明:3种方法中,KNO3都能均匀地负载在GO片层表面,溶剂-非溶剂法中KNO3的负载量最大;重结晶法制备的复合含能材料的反应快速且剧烈,反应起始温度较GO提前了74℃;中和法制备的材料的反应相对平缓,经历了3个阶段;溶剂-非溶剂法的热分解过程基本和纯KNO3相同。

Preparation and Characterization of KNO3/GO Composite Energetic Materials

[ ABSTRACT] Potassium nitrate/graphene oxide ( KNO3/GO ) composite energetic materials were prepared by the methods of recrystallization, neutralization and solvent/non-solvent respectively. The loading amount of KNO3 was measured by comparing the weight change before and after loading. The composite materials were characterized by X-ray diffraction ( XRD) , Fourier transform infrared spectroscopy ( FTIR ) , field emission scanning electron microscopy ( FESEM ) and thermogravimetry/differential thermal analysis (TG/DTA). Results show that KNO3 is coated on the surface of GO uni-formly by the three methods, while the composite materials prepared by solvent/non-solvent method has the maximum loading amount. The reaction of composite materials prepared by recrystallization is rapid and intense, and the onset point of the samples increase by 74 ℃ compared with that of the raw GO. Samples prepared by neutralization method undergo three different reaction stages, and the reaction is relatively gentle. Thermal decomposition process of materials made by solvent/non-solvent method is the same as that of pure KNO3 .