基于还原氧化石墨烯@MoS /聚偏氟乙烯复合材料的优异微波吸收和电磁干扰屏蔽性能
Excellent Microwave Absorption and Electromagnetic Interference Shielding Based on Reduced Graphene Oxide@MoS /Poly(Vinylidene Fluoride) Composites.
作者信息
Guo Ao-Ping, Zhang Xiao-Juan, Wang Shan-Wen, Zhu Jia-Qiang, Yang Lin, Wang Guang-Sheng
机构信息
Key Laboratory of Bio-Inspired Smart Interfacial Science, and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou, Guangdong, 510100, P. R. China.
出版信息
Chempluschem. 2016 Dec;81(12):1305-1311. doi: 10.1002/cplu.201600370. Epub 2016 Sep 28.
Reduced graphene oxide (rGO)@MoS composites with a loose structure were prepared and added to poly(vinylidene fluoride) (PVDF) to form composites that showed superior microwave absorption and excellent electromagnetic interference shielding performances. The maximum reflection loss of the rGO@MoS /PVDF composites, with a low filling rate (only 5.0 wt %), can reach -43.1 dB at 14.48 GHz, and the frequency bandwidth below -10 dB is 3.6-17.8 GHz (in the frequency range of 2-18 GHz) with a thickness of 1-5 mm. Furthermore, rGO@MoS /PVDF composites with a higher filling rate (25 wt %) also exhibit outstanding electromagnetic interference shielding effectiveness, reaching a maximum at 27.9 dB. The mechanism of enhanced absorption and electromagnetic interference shielding performances were also studied in detail.
制备了具有疏松结构的还原氧化石墨烯（rGO）@MoS复合材料，并将其添加到聚偏氟乙烯（PVDF）中，以形成具有优异微波吸收和出色电磁干扰屏蔽性能的复合材料。rGO@MoS/PVDF复合材料的填充率较低（仅5.0 wt %），在14.48 GHz时的最大反射损耗可达-43.1 dB，厚度为1-5 mm时，低于-10 dB的频率带宽为3.6-17.8 GHz（在2-18 GHz频率范围内）。此外，填充率较高（25 wt %）的rGO@MoS/PVDF复合材料也表现出出色的电磁干扰屏蔽效能，在27.9 dB时达到最大值。还详细研究了吸收增强和电磁干扰屏蔽性能的机制。
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