Preparation of HMX/Cu Composite Particles by Electroless Plating Method and their Thermal Decomposition Characteristics

doi:10.3969/j.issn.1000-1093.2014.01.005

Abstract

Abstract: HMX/Cu composite particles are prepared by the electroless plating method. The size, morphology and phase of particles are analyzed by SEM and XRD. And the DSC is applied to study their thermal decomposition characteristic. The results show that the composite particles coated with Cu of 80 nm in diameter have obvious catalysis effect on solid phase decomposition of HMX. The percentage of the prophase decomposition heat increases from 2.37% to 97.29%. On the other hand, the thermal decomposition peak moves to the low temperature of 35.53 ℃ and the rate slows down. Especially, the thermal decomposition of HMX/Cu become to be very intense at the heating rate of 15 ℃/min. Compared with HMX, the apparent activation energy of HMX/Cu is decreased by 33.16 kJ/mol. It is advantageous to the thermal decomposition of nano HMX/Cu through adding a moderate amount of O₂. Moreover, “Effect of spatial distribution” of catalyst is presented based on the analysis of nanometer Cu catalyst mechanism.

Key words: ordnance science and technology, electroless plating, loaded catalyst, nanometer Cu, thermal decomposition, catalysis action

CLC Number:

TJ55

XIONG Lang-lu，GUO Xiao-de， LI Feng-sheng. Preparation of HMX/Cu Composite Particles by Electroless Plating Method and their Thermal Decomposition Characteristics[J]. Acta Armamentarii, 2014, 35(1): 35-41.

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