Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, People's Republic of China.
ACS Appl Mater Interfaces. 2017 Jun 28;9(25):21371-21381. doi: 10.1021/acsami.7b04523. Epub 2017 Jun 15.
Electromagnetic interference (EMI) shielding materials for electronic devices in aviation and aerospace not only need lightweight and high shielding effectiveness, but also should withstand harsh environments. Traditional EMI shielding materials often show heavy weight, poor thermal stability, short lifetime, poor tolerance to chemicals, and are hard-to-manufacture. Searching for high-efficiency EMI shielding materials overcoming the above weaknesses is still a great challenge. Herein, inspired by the unique structure of natural wood, lightweight and highly anisotropic wood-derived carbon composite EMI shielding materials have been prepared which possess not only high EMI shielding performance and mechanical stable characteristics, but also possess thermally stable properties, outperforming those metals, conductive polymers, and their composites. The newly developed low-cost materials are promising for specific applications in aerospace electronic devices, especially regarding extreme temperatures.
用于航空航天电子设备的电磁干扰（EMI）屏蔽材料不仅需要重量轻和高屏蔽效能，还应能承受恶劣环境。传统的 EMI 屏蔽材料通常重量大、热稳定性差、寿命短、对化学品耐受性差，并且难以制造。寻找克服上述弱点的高效 EMI 屏蔽材料仍然是一个巨大的挑战。在此，受天然木材独特结构的启发，已经制备出具有重量轻和各向异性的木材衍生碳基复合材料 EMI 屏蔽材料，其不仅具有高 EMI 屏蔽性能和机械稳定特性，而且还具有热稳定特性，优于金属、导电聚合物及其复合材料。新开发的低成本材料有望在航空航天电子设备的特定应用中得到应用，特别是在极端温度下。
