Author(s): Yu Zhongliang, Huang Qiuan, Li Zhibing
Pages: 6-8,21
Year: 2014 Issue:  12
Journal: Ordnance Industry Automation
Keyword:  physical chemistry; double salt; ammonium perchlorate; thermal decomposition;
Abstract: In order to improve the mechanical properties and thermal decompositon of the perchlorate(MxClO4), an ammonium perchlorate based double salt Mx(NH4)1-xClO4 was prepared by a combination of microemulsion and hydrothermal methods. The micro-morphologies and crystal structures of Mx(NH4)1-xClO4 were characterized by scanning electron microscopy(SEM) and X-ray diffraction (XRD). The thermal decomposition properties of raw materials and product were studied by differential scanning calorimetry (DSC). The results show that two-oxidizers in intermolecular are uniformly mixed via control of the process parameters. The crystals of the high quality double salt obtained are polyhedral, surface smooth and complete. Its crystal structure is well-ordered and dense. The crystals of double salt are orthorhombic and have high symmetry. Average lattice constants area=9.878 9?,b=6.758 6?,c=7.118 8?. Continuous exothermic peaks appear in the thermal decomposition process of the double salt. Double salt has good decomposition performance. In the decomposition process of double salt, MxClO4 plays roles of crystal type stabilizer and catalyzer. And the two kinds of raw materials react mutually.