Central European Journal of Energetic Materials Volume 10, Number 1, 2013

Preparation of Al Nanoparticles and Their Influence
on the Thermal Decomposition of RDX

Conghua HOU, Xiaoheng GENG, Chongwei AN,
Jingyu WANG, Wenzheng XU and Xiaodong LI

Chemical Industry and Ecology Institute, North University of China,
Taiyuan Shanxi, 030051, China
Urban and Environmental Science Department,
Binzhou University, Binzhou, Shandong 256600, China 

Abstract: Aluminum (Al) nanoparticles were prepared by the DC arc plasma method in order to study the influence of Al nanoparticles on the thermal decomposition of cyclotrimethylenetrinitramine (RDX). The Al powder was characterized by TEM, BET, XRD, and LSA, and the thermal decomposition of RDX and RDX/nanometer Al were examined by DSC. Based on the DSC curves, the thermal decomposition parameters of the samples were calculated and compared. The results showed that the particles of Al are homogeneous and fine, and that the surface is smooth. The TEM results showed that the nanoparticles are spherical, with an average diameter of approximately 60 nm. The peak temperature of RDX decomposition decreased by 4.36 K at the heating rates of 5, 10, and 20 K/min after the addition of nano-Al powder, and the activation energy for decomposition decreased by about 11 kJ/mol. Furthermore, the critical explosion temperature was also reduced. These observable changes indicate that Al nanoparticles act as catalysts for the thermal decomposition of RDX. 

Keywords: Al nanoparticles, properties, RDX, thermal decomposition

Institute of Industrial Organic Chemistry

Warsaw, Poland