Poly(Vinylidene Fluoride)/[email protected] Anchored Reduced-graphene Oxide Composite Films with Folding Movement to Boost Microwave Absorption Properties

Biao Zhao,1, 2#

Luyang Liang,3#

Zhongyi Bai,1

Xiaoqin Guo,1

Rui Zhang,1, 3

Qinglong Jiang4*Email

Zhanhu Guo5*Email

1Henan Key Laboratory of Aeronautical Materials and Application Technology, School of Material Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, Henan 450046, China.

2 Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto M5S 3G8, Canada.

3 National Engineering Research Center for Advanced Polymer Processing Technology, Key Laboratory of Advanced Materials Processing & Mold (Ministry of Education), Zhengzhou University, Zhengzhou 450002, China

4Department of Chemistry and Physics, University of Arkansas, Pine Bluff, Arkansas 71601, USA

5Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA.

# These authors contributed equally to this paper.

Abstract

The influence of reduced graphene oxide (rGO)/[email protected] loading and foldable structure on the microwave absorption properties of poly(vinylidene fluoride) (PVDF)/rGO/[email protected] composite films was investigated in detail. The microwave absorption properties of the PVDF/rGO/[email protected] composite films increased with the rGO/[email protected] content increases and then decreased, which was due to the variation of impedance match. Additionally, the foldable structure was found to play a decisive role on the tunable and strong microwave absorption. The minimal reflection loss of -49.1 dB could be obtained for foldable PVDF/20 wt% rGO/[email protected] with a thickness of 2.5 mm, and the bandwidth (below -20 dB, 99% dissipation) could reach 6.4 GHz (18.5-19.3 GHz, 20.7-26.5 GHz).

Poly(Vinylidene Fluoride)/Cu@Ni Anchored Reduced-graphene Oxide Composite Films with Folding Movement to Boost Microwave Absorption Properties