铵盐氧化剂作为固体推进剂的重要组分，普遍存在吸湿性问题，目前主要通过颗粒球形化和包覆等常规技术降低其吸湿性，但改善效果不佳，严重制约其在推进剂中的应用。共晶技术的发展为吸湿性的抑制提供了新的策略。针对ADN的强吸湿特性及其本质原因，基于共晶策略，选择呋咱醚等具有抗湿性的含能化合物作为抗湿剂，构筑ADN新型共晶。首先探索共结晶热力学和静电势最强相互作用，理论筛选可以与ADN形成共晶的抗湿剂；采用溶液结晶方法和外场辅助技术开展ADN共晶制备研究，表征其晶体结构和性能。在此基础上，考察共晶的吸湿和表面特性，结合理论计算分析共晶结构、极性和表面能与吸湿性的关系，阐明共晶抑制吸湿性机理。本项目的研究在保持ADN能量基本不变的同时，将显著降低甚至完全抑制ADN吸湿性，对促进ADN广泛应用于武器装备具有重要的推动作用；而且该技术为其它炸药吸湿性的改性提供一种新的有效途径，具有重要的科学意义和应用价值。

Ammonium salt oxidizers are important components in solid propellants and generally suffer from serious hygroscopicity. However, the traditional spheroidizing and coating techniques are applied to reduce the hygroscopicity with undesirable results, leading to limit their applications in propellants. The development of cocrystal technique provides a new strategy to inhibit the hygroscopicity. In view of the hygroscopicity and reason for the ADN, cocrystallizing ADN with furazan ether energetic compounds used as moisture retardants together to construct ADN cocrystals based on cocrystal strategy in this project. Firstly, the potential moisture retardants will be predicted and screened through exploring thermodynamics and stronger interactions of electrostatic potentials. Next, ADN cocrystals will be prepared by traditional solution crystallization and out-filed assisted methods meanwhile cocrystal structures and properties also will be analysed. After finishing above studies, this project will research the features of hygroscopicity and surface for cocrystal samples to further exploit the relationships between structure, polarity, surface energy and hygroscopicity with the help of theoretical analyses in order to reveal inhibitive hygroscopicity mechanism of ADN cocrystals. As a result, this work will dramatically reduce even all inhibit the hygroscopicity of ADN meanwhile keeping its energy, largely promoting its practical applications in weapons and equipments. Additionally, this cocrystal strategy will offer an effective method to alter the hygroscopicity for other compounds. Therefore, this project has an important scientific meaning and practical value.