硫化钴/聚偏氟乙烯复合材料的增强波吸收性能和力学性能

Enhanced Wave Absorption and Mechanical Properties of Cobalt Sulfide/PVDF Composite Materials.

作者信息

Wu Qiong, Wu Jian, Wang Guang-Sheng, Zhang Hua-Zhao, Gao Han-Jun, Shui Wei-Jia

机构信息

State Key Laboratory of Virtual Reality Technology and Systems, School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, P.R. China.

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.

出版信息

Sci Rep. 2019 Jul 19;9(1):10488. doi: 10.1038/s41598-019-47037-3.

DOI:10.1038/s41598-019-47037-3

PMID:31324850

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6642107/

Abstract

A cobalt sulfide/PVDF(Polyvinylidene Fluoride) composite was prepared by a simple blending method, and the microstructure of the composite was investigated through X-ray diffraction, scanning electron microscopy, and field emission scanning electron microscopy. Increased absorption properties at frequencies ranging from 2 GHz to 18 GHz were studied, and the mechanical properties were investigated via tensile tests and finite element method simulations. The results indicated that the cobalt sulfide/PVDF composites exhibited strong microwave absorption intensities (-43 dB at 6.6 GHz) with a low filler loading (5.0 wt%). The elastic modulus increased with the cobalt sulfide mass fraction. Cobalt sulfide could improve the mechanical properties of the composite, especially in the lengthwise direction.

摘要

通过简单的共混方法制备了硫化钴/聚偏二氟乙烯（PVDF）复合材料，并通过X射线衍射、扫描电子显微镜和场发射扫描电子显微镜对复合材料的微观结构进行了研究。研究了在2 GHz至18 GHz频率范围内增强的吸收特性，并通过拉伸试验和有限元方法模拟研究了其力学性能。结果表明，硫化钴/PVDF复合材料在低填料含量（5.0 wt%）下表现出较强的微波吸收强度（在6.6 GHz时为-43 dB）。弹性模量随硫化钴质量分数的增加而增大。硫化钴可以改善复合材料的力学性能，尤其是在纵向方向。