Significantly improved interfacial properties of silicon dioxide nanowire functionalized poly(p-phenylene-2,6-benzobisoxazole)(PBO)fibers/polytetrafluoroethylene(PTFE)wave-transparent laminated composites

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外文摘要：Poly(p-phenylene-2,6-benzobisoxazole)(PBO)fiber and polytetrafluoroethylene(PTFE)resin have been widely acknowledged as excellent wave-transparent materials for future high-frequency applications due to their exceptional dielectric properties.However,the weak interfacial bonding between these two ma-terials hampers their full potential.In this study,we successfully addressed this limitation by enhanc-ing the surface roughness of PBO fibers and introducing active sites through the in-situ grafting of sil-ica nanowires.The added silica acted as an interfacial anchor on the PBO fiber surface,significantly improving the bonding force between PBO and PTFE.PBO/PTFE wave-transparent laminated composites were fabricated using hot compression molding.The results demonstrate that the PBO(treated with in-situ grown silica)/PTFE laminated composites exhibit superior interlaminar shear strength(ILSS),flexural strength,flexural modulus,and tensile modulus compared to the pristine PBO/PTFE laminated compos-ites.Specifically,these properties are found to be 58.6％,32.9％,138.1％,and 25.35％higher,respectively.Additionally,these composites demonstrate low dielectric constant and dielectric loss.Most notably,they achieve a wave transmittance of 91.45％at 10 GHz,indicating significant potential for wide-range applications in next-generation advanced military weapons,such as"lightweight/high-strength/wave-transparent"electromagnetic window materials,as well as civilian communication base stations.

外文关键词：

PBO fibersPTFESilicon dioxide nanowiresWave-transparent laminated composites

作者：

Xusheng He、Chao Xiao、Huichao Du、Yanyan Wang、Xin Ding、Kang Zheng、Meng Xue、Xingyou Tian、Xian Zhang

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作者单位：

Key Laboratory of Photovoltaic and Energy Conservation Materials,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China

University of Science and Technology of China,Hefei 230026,China

School of Materials Science and Engineering,Anhui University,Hefei 230601,China

Lu'an Branch,Anhui Institute of Innovation for Industrial Technology,Lu'an 237000,China

Guangdong Banggu Film Coatings Innovation Academy Co.,Ltd.,Nanxiong 512400,China

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基金：

National Natural Science Foundation of ChinaCASHIPS Director's FundCASHIPS Director's FundCASHIPS Director's FundAnhui Province Postdoctoral Researcher Research ProjectCentral Government Guiding Local Government Science and Technology Development Special Fund Project

项目编号：

U21A2094YZJJZX202015YZJJ202304-CXYZJJ2023QN36E24F0D272022ZB09002

出版年：

2024

DOI：

10.1016/j.jmst.2023.09.052

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.183(16)