Jiao Yuke, Li Shengnan, Li Guoping, Luo Yunjun
School of Materials Science and Engineering, Beijing Institute of Technology Beijing 100081 China
Key Laboratory for Ministry of Education of High Energy Density Materials, Beijing Institute of Technology Beijing 100081 China.
RSC Adv. 2022 Feb 16;12(9):5612-5618. doi: 10.1039/d1ra08970f. eCollection 2022 Feb 10.
The addition of fluoropolymers can improve the reactivity of Al and enhance the combustion performance of thermites, which has attracted great interest. Also, direct writing 3D printing technology for the preparation of energetic materials is an innovative process that can meet a variety of complex requirements. In this study, soluble Viton F2311 was used as a binder, and F2311/Al/CuO (FMICs) nanocomposites were prepared by direct writing. The components of FMICs were evenly distributed without obvious agglomeration. The thermal and combustion properties of FMICs with different mass fractions of F2311 were systematically studied. As the F2311 content increases, the thermite reaction of FMICs is advanced and the system has a higher exothermic and combustion rate. The F2311 content had little effect on the combustion flame temperature of FMICs, all of which were above 2400 K. Compared with PTFE and new fluoropolymers/nanothermites, F2311/nanothermites shows better processability and reaction properties and probably has promising applications.
含氟聚合物的添加可以提高铝的反应活性并增强铝热剂的燃烧性能，这引起了人们的极大兴趣。此外，用于制备含能材料的直写式3D打印技术是一种创新工艺，能够满足各种复杂需求。在本研究中，使用可溶性氟橡胶F2311作为粘结剂，通过直写式制备了F2311/Al/CuO（FMICs）纳米复合材料。FMICs的组分均匀分布，无明显团聚。系统研究了不同质量分数F2311的FMICs的热性能和燃烧性能。随着F2311含量的增加，FMICs的铝热反应提前，体系具有更高的放热和燃烧速率。F2311含量对FMICs的燃烧火焰温度影响不大，所有温度均高于2400K。与聚四氟乙烯和新型含氟聚合物/纳米铝热剂相比，F2311/纳米铝热剂表现出更好的加工性能和反应性能，可能具有广阔的应用前景。
