适用增材制造的复合固体推进剂现状及发展趋势

Progress of composite solid propellant by additive manufacturing

近年含能材料增材制造技术发展迅速,摆脱了传统制造技术带来的几何约束,有望实现复杂结构药柱的按需制造,为提升武器装备作战性能提供关键的材料支撑。作为一种常用的含能材料,复合固体推进剂的增材制造也受到广泛关注,但传统热固型复合固体推进剂的流变特性同时受组成、温度、时间的协同影响,存在与增材制造工艺要求不匹配无法直接成型的问题。文章综述了增材制造技术在复合固体推进剂领域的研究现状,重点介绍了当前适用于增材制造的复合固体推进剂特性及优缺点,并提出了增材制造在复合固体推进剂领域未来发展趋势和建议,认为采用尽可能小的变动使在役固体推进剂适用于增材制造工艺需求,是当前固体推进剂增材制造技术研究值得关注的方向。

In recent years,the additive manufacturing technology of energetic materials is developing rapidly,which can get rid of the geometric constraints brought by the traditional manufacturing technology.It is expected to realize the complex structure manufacturing of grain and provide the material support for improving the combat performance of weapon equipment.The composite solid propellant additive manufacturing technology has received widespread attention.Unfortunately,the rheological properties of conventional thermosetting propellants are simultaneously affected by composition,temperature and time.These propellants cannot be molded directly,because of mismatching with the requirements of the additive manufacturing process.This paper reviews the current state of research in the field of composite solid propellants for material additive manufacturing technology.Besides,the characteristics,merits and drawbacks of these composite solid propellants were discussed.The development trends and recommendations for material addition manufacturing in the field of composite solid propellants were presented.It is worth paying attention to the direction of using as small change as possible to make the existing solid propellant meet the requirements of additive manufacturing process.