石墨烯印刷玻璃纤维复合材料宽带吸波器的电磁波吸收与结构特性
Electromagnetic wave absorption and structural properties of wide-band absorber made of graphene-printed glass-fibre composite.
作者信息
Marra F, Lecini J, Tamburrano A, Pisu L, Sarto M S
机构信息
Department of Astronautics, Electrical and Energy Engineering, Sapienza University of Rome, 00184, Rome, Italy.
Research Center for Nanotechnology applied to Engineering, Sapienza University of Rome, 00184, Rome, Italy.
出版信息
Sci Rep. 2018 Aug 13;8(1):12029. doi: 10.1038/s41598-018-30498-3.
Lightweight composites combining electromagnetic wave absorption and excellent mechanical properties are required in spacecraft and aircraft. A one- dimensional metamaterial absorber consisting of a stack of glass fibre/epoxy layers and graphene nanoplatelets/epoxy films was proposed and fabricated through a facile air-spraying based printing technology and a liquid resin infusion method. The production process allows an optimum dispersion of graphene nanoplatelets, promoting adhesion and mechanical integration of the glass fibre/epoxy layers with the graphene nanoplatelets/epoxy films. According to experimental results, the proposed wide-band absorber provides a reflection coefficient lower than -10 dB in the range 8.5-16.7 GHz and an improvement of flexural modulus of more than 15%, with a total thickness of ∼1 mm. Outstanding electromagnetic wave absorption and mechanical performance make the proposed absorber more competitive in aeronautical and aerospace applications.
航天器和飞机需要兼具电磁波吸收能力和优异机械性能的轻质复合材料。本文提出并制备了一种由玻璃纤维/环氧树脂层和石墨烯纳米片/环氧树脂薄膜堆叠而成的一维超材料吸收体，采用了基于空气喷涂的简易印刷技术和液体树脂灌注方法。该生产工艺能够使石墨烯纳米片实现最佳分散，促进玻璃纤维/环氧树脂层与石墨烯纳米片/环氧树脂薄膜的粘附和机械整合。实验结果表明，所提出的宽带吸收体在8.5 - 16.7 GHz范围内的反射系数低于-10 dB，弯曲模量提高了15%以上，总厚度约为1 mm。出色的电磁波吸收和机械性能使所提出的吸收体在航空航天应用中更具竞争力。
Zotero 插件