Wang Ruihao, Yang Lanting, Zhang Zhenwei, Song Wenkui, Wang Dunju, Guo Changping
Co-Innovation Center for New Energetic Materials, Southwest University of Science and Technology Mianyang 621010 PR China
RSC Adv. 2023 Jun 13;13(26):17834-17841. doi: 10.1039/d3ra02732e. eCollection 2023 Jun 9.
Composite explosives with fast reaction rate, high energy release efficiency, and remarkable combustion performance can be obtained by the interaction between homogeneous energetic materials and heterogeneous energetic materials and have broad application prospects. However, ordinary physical mixtures can easily cause separation between the components in the preparation process, which is not conducive to reflecting the advantages of composite materials. In this study, high-energy composite structured explosives with RDX modified by polydopamine as the core and PTFE/Al as the shell were prepared using a simple ultrasonic method. The study of morphology, thermal decomposition, heat release, and combustion performance demonstrated that the quasi-core/shell structured samples have higher exothermic energy, faster combustion rate, more stable combustion characteristics, and lower mechanical sensitivity than the physical mixture.
通过均质含能材料与非均质含能材料之间的相互作用，可以获得具有快速反应速率、高能量释放效率和卓越燃烧性能的复合炸药，并且具有广阔的应用前景。然而，普通的物理混合物在制备过程中很容易导致各组分之间的分离，这不利于体现复合材料的优势。在本研究中，采用简单的超声方法制备了以聚多巴胺修饰的黑索今（RDX）为核、聚四氟乙烯/铝（PTFE/Al）为壳的高能复合结构炸药。对其形貌、热分解、热释放和燃烧性能的研究表明，与物理混合物相比，准核壳结构样品具有更高的放热能量、更快的燃烧速率、更稳定的燃烧特性以及更低的机械感度。
