Coating processes towards selective laser sintering of energetic material composites

作     者：Zetu Jiba Walter W.Focke Lonji Kalombo Moshawe J.Madito Zetu Jiba;Walter W. Focke;Lonji Kalombo;Moshawe J. Madito

作者机构：Council for Scientific and Industrial Research(CSIR)Defence Peace Safety and SecurityP.O Box 395Pretoria 0001South Africa University of PretoriaSouth Africa CSIRChemical ClusterSouth Africa 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2020年第16卷第2期

页      面：316-324页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 0803[工学-光学工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：funded by the Council for Scientific and Industrial Research(CSIR)。 

主　　题：Coating processes Energetic materials Simulants Mock explosives Additive manufacturing Selective laser sintering 

摘      要：This research aims to contribute to the safe methodology for additive manufacturing(AM)of energetic materials.Coating formulation processes were investigated and evaluated to find a suitable method that may enable selective laser sintering(SLS)as the safe method for fabrication of high explosive(HE)compositions.For safety and co nvenie nce reasons,the co ncept demonstration was conducted using inert explosive simulants with properties quasi-similar to the real HE.Coating processes for simulant RDXbased microparticles by means of PCL and 3,4,5-trimethoxybenzaldehyde(as TNT simulant)are reported.These processes were evaluated for uniformity of coating the HE inert simulant particles with binder materials to facilitate the SLS as the adequate binding and fabrication method.Suspension system and single emulsion methods gave required particle near spherical morphology,size and uniform coating.The suspension process appears to be suitable for the SLS of HE mocks and potential formulation methods for active HE composites.The density is estimated to be comparable with the current HE compositions and plastic bonded explosives(PBXs)such as C4 and PE4,produced from traditional methods.The formulation method developed and understanding of the science behind the processes paves the way toward safe SLS of the active HE compositions and may open avenues for further research and development of munitions of the future.