Fabrication and Characterization of Viton@FOX-7@Al Spherical Composite with Improved Thermal Decomposition Property and Safety Performance |
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| Authors: | Xiaodong Li Yue Yang Changgui Song Yantao Sun Yuanqi Han Yue Zhao Jingyu Wang |
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| Affiliation: | School of Environment and Safety Engineering, North University of China, Jiancaoping District, Taiyuan 030051, China; (C.S.); (Y.S.); (Y.H.); (Y.Z.); (J.W.) |
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| Abstract: | ![]()
To achieve a uniform distribution of the components and a better performance of aluminized composite explosives, Viton (dipolymers of hexafluoropropylene and vinylidene fluoride) @ FOX-7 (1,1-diamino-2,2-dinitroethylene) @Al microspheres and FOX-7/Viton@Al were synthesized by spray-drying strategy contrastively. Viton@FOX-7@Al owned porous and loose morphology and good sphericity with a retained crystal phase of FOX-7 and aluminum. The 23.56% fluorine content on Viton@FOX-7@Al surface indicated that Viton was completely coated on the surface of the particles. Nanosized aluminum (nAl) in Viton@FOX-7@Al had a certain catalytic activity on the thermal decomposition process of FOX-7 resulting in a depressed exothermic peak temperature and reduced apparent activation energy relative to nAl in FOX-7/Viton@Al. Because of the specific structure and the synergies between each individual component, Viton@FOX-7@Al showed reduced impact sensitivity and friction sensitivity than those of FOX-7/Viton@Al. In brief, Viton@FOX-7@Al with multilevel coating structure possessed comparatively low thermal decomposition energy requirement and improved safety performance. |
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| Keywords: | FOX-7 (1,1-diamino-2,2-dinitroethylene) thermal decomposition analysis energetic materials aluminized composite explosives |
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