材料科学
石墨烯
反射损耗
碳硼烷
复合材料
氧化物
表面改性
环氧树脂
拉曼光谱
氧化石墨
电导率
亚苯基
微波食品加热
聚合物
复合数
化学工程
纳米技术
光学
化学
有机化学
工程类
物理化学
量子力学
物理
冶金
作者
Yunxing Pan,Chenghao Wang,Hang Dong,Guiping Ma,Nan Li,Liang Cheng,Jinyan Wang,Xigao Jian
标识
DOI:10.1016/j.jallcom.2021.158708
摘要
The poly(phenylene-carborane) (PPB) is covalently attached to the surface of graphene oxide (GO) for the first time via Ni(0)-catalyzed polymerization, and the functionalization of the GO has been confirmed by XPS, XRD, FT-IR, SEM, TEM and Raman. After grafting of PPB onto GO, the GO-PPB composites exhibit excellent electromagnetic wave absorption properties, which are mainly originated from suitable impedance characteristics, the efficient complementarities of polarization and conductivity between PPB polymers and GO sheets, and the dipole polarization in the defects, functional groups and carborane structures. The effective absorption bandwidth (reflection loss below −10 dB) of GO-PPB composites with a low filler loading (20 wt%) can reach up to 3.6 GHz with a thickness of only 1.1 mm, and the minimum reflection loss of - − 28.3 dB is obtained in 4.2 GHz at the thickness of 3.7 mm. The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.
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