Department of Energetic Materials Science and Technology, Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.
Molecules. 2021 Sep 17;26(18):5650. doi: 10.3390/molecules26185650.
Weak interfacial interactions remain a bottleneck for composite materials due to their weakened performance and restricted applications. The development of core-shell engineering shed light on the preparation of compact and intact composites with improved interfacial interactions. This review addresses how core-shell engineering has been applied to energetic materials, with emphasis upon how micro-energetic materials, the most widely used particles in the military field, can be generated in a rational way. The preparation methods of core-shell structured explosives (CSEs) developed in the past few decades are summarized herein. Case studies on polymer-, explosive- and novel materials-based CSEs are presented in terms of their compositions and physical properties (e.g., thermal stability, mechanical properties and sensitivity). The mechanisms behind the dramatic and divergent properties of CSEs are also clarified. A glimpse of the future in this area is given to show the potential for CSEs and some suggestions regarding the future research directions are proposed.
由于其性能减弱和应用受限，弱界面相互作用仍然是复合材料的一个瓶颈。核壳工程的发展为制备具有增强界面相互作用的致密、完整的复合材料提供了思路。本文综述了核壳工程在含能材料中的应用，重点介绍了如何以合理的方式制备在军事领域应用最广泛的微能材料。本文总结了过去几十年中开发的核壳结构炸药（CSEs）的制备方法。根据其组成和物理性能（如热稳定性、力学性能和感度），介绍了基于聚合物、炸药和新型材料的 CSE 的案例研究。还阐明了 CSEs 性能显著且差异较大的原因。展望了这一领域的未来，展示了 CSEs 的潜力，并提出了对未来研究方向的一些建议。
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