![]() 12 Compared with single compounds, cocrystal materials can effectively change the physicochemical properties such as density, solubility, and stability through co-crystallization. ![]() 8–11 Cocrystallization has become one of the effective methods to develop energetic materials with high energy and insensitivity. 4–7 For energetic materials, high energy is always accompanied by poor sensitivity. 1–3 Recently, co-crystallization, the method of mixing different single compounds into cocrystals at the molecular level, has attracted more and more attention in the field of energetic materials. Introduction A cocrystal is a combination of two or more compounds, which are combined in the same crystal lattice with a defined stoichiometric ratio relying on non-covalent interactions (hydrogen bonds, π–π stacking and van der Waals forces), and has solid-state properties different from those of the pure component materials or simple physical mixtures. HMX cocrystal could be prepared by the isothermal slurry conversion crystallization method.By properly selecting the ratios, the 2HNIW The results show that the choice of solvent has a crucial influence on the dissolution behavior of the cocrystal and the size and position of each region in the phase diagram, while the temperature has no apparent effect on the overall appearance of the phase diagram. The cocrystal exhibits a wider thermodynamically stable region in the HMX–HNIW–ethyl acetate system. HMX cocrystal has a narrow thermodynamically stable region at both temperatures.In the HMX–HNIW–acetonitrile system, the 2HNIW HMX and HNIW showed inconsistent dissolution behavior and congruent dissolution behavior in acetonitrile and ethyl acetate, respectively. HMX cocrystal in acetonitrile and ethyl acetate at 15 ☌ and 25 ☌.Ternary phase diagrams were constructed for the 2HNIW ![]() The influence of temperature and solvent on the solid–liquid ternary phase diagrams of the 2HNIW ![]()
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