用于高微波吸收效率的聚乙烯醇缩丁醛-聚苯胺纳米复合材料
Polyvinylbutyral-Polyaniline Nanocomposite for High Microwave Absorption Efficiency.
作者信息
Bora Pritom J, Azeem Irthasa, Vinoy K J, Ramamurthy Praveen C, Madras Giridhar
机构信息
Interdisciplinary Centre for Energy Research (ICER), Department of Materials Engineering, and Department of Electrical and Communication Engineering, Indian Institute of Science, Bangalore 560012, India.
出版信息
ACS Omega. 2018 Dec 4;3(12):16542-16548. doi: 10.1021/acsomega.8b02037. eCollection 2018 Dec 31.
A coatable polyvinylbutyral (PVB)-polyaniline (PANI) nanocomposite was designed for high microwave absorption efficiency. The maximum absorption efficiency 88.2 dB GHz/mm was obtained for the PANI nanofiber-loaded PVB (PVBPN) nanocomposite with a large bandwidth, whereas a pristine PANI-containing composite shows 53.5 dB GHz/mm in the frequency range 8.2-18 GHz. The presence of nanoslit pores in PVBPN also helps to achieve a large bandwidth and hence high microwave absorption efficiency. Standard electromagnetic simulation also shows that power absorbed by the PVBPN nanocomposite is high and its ultrathin coating over the dielectric substrate (epoxy) is promising for broadband tuneable reflection loss.
为实现高微波吸收效率，设计了一种可涂覆的聚乙烯醇缩丁醛（PVB）-聚苯胺（PANI）纳米复合材料。对于具有大带宽的负载聚苯胺纳米纤维的PVB（PVBPN）纳米复合材料，获得了88.2 dB GHz/mm的最大吸收效率，而含原始聚苯胺的复合材料在8.2-18 GHz频率范围内显示为53.5 dB GHz/mm。PVBPN中纳米狭缝孔的存在也有助于实现大带宽，从而实现高微波吸收效率。标准电磁模拟还表明，PVBPN纳米复合材料吸收的功率很高，并且其在介电基板（环氧树脂）上的超薄涂层对于宽带可调反射损耗很有前景。
Zotero 插件