Robust,Flexible,and Superhydrophobic Fabrics for High-Efficiency and Ultrawide-Band Microwave Absorption  

高牢度、柔性超疏水织物用于超宽带高效微波吸收

作　　者：Zhong Zhang Yaxin Meng Xinrui Fang Qing Wang Xungai Wang Haitao Niu Hua Zhou 张仲;孟雅鑫;方新锐;王庆;王训该;牛海涛;周华

机构地区：[1]Laboratory for Manufacturing Low Carbon and Functionalized Textiles in the Universities of Shandong Province,College of Textiles&Clothing,Qingdao University,Qingdao 266071,China [2]Research Centre of Textiles for Future Fashion,JC STEM Lab of Sustainable Fibers and Textiles,School of Fashion and Textiles,The Hong Kong Polytechnic University,Hong Kong 999077,China [3]Collaborative Innovation Center for Eco-Textiles of Shandong Province and the Ministry of Education Collaborative,Qingdao University,Qingdao 266071,China

出　　处：《Engineering》2024年第10期161-171,共11页工程（英文）

基　　金：supported by the National Natural Science Foundation of China(22372087);the Natural Science Foundation of Shandong Province(ZR2021ME039);the Applied Basic Research Programs of National Textile Industry Federation(J202106);the Newtech Textile Technology Development(Shanghai)Co.,Ltd.,China;the Jiangsu New Vison Advanced Functional Fiber Innovation Center;support from both the Research Centre of Textiles for Future Fashion at The Hong Kong Polytechnic University;The Hong Kong Jockey Club Charities Trust.

摘　　要：Microwave absorption(MA)materials are essential for protecting against harmful electromagnetic radiation.In this study,highly efficient and ultrawide-band microwave-absorbing fabrics with superhydrophobic surface features were developed using a facile dip-coating method involving in situ graphene oxide(GO)reduction,deposition of TiO_(2) nanoparticles,and subsequent coating of a mixture of polydimethylsiloxane(PDMS)and octadecylamine(ODA)on polyester fabrics.Owing to the presence of hierarchically structured surfaces and low-surface-energy materials,the resultant reduced GO(rGO)/TiO_(2)-ODA/PDMS-coated fabrics demonstrate superhydrophobicity with a water contact angle of 159°and sliding angle of 5°.Under the synergistic effects of conduction loss,interface polarization loss,and surface roughness topography,the optimized fabrics show excellent microwave absorbing performances with a minimum reflection loss(RL_(min))of47.4 dB and a maximum effective absorption bandwidth(EAB_(max))of 7.7 GHz at a small rGO loading of 6.9 wt%.In addition,the rGO/TiO_(2)-ODA/PDMS coating was robust,and the coated fabrics could withstand repeated washing,soiling,long-term ultraviolet irradiation,and chemical attacks without losing their superhydrophobicity and MA properties.Moreover,the coating imparts self-healing properties to the fabrics.This study provides a promising and effective route for the development of robust and flexible materials with microwave-absorbing properties.

关 键 词：Microwave absorption SUPERHYDROPHOBIC FABRICS COATING SELF-HEALING 

分 类 号：TS195.597[轻工技术与工程—纺织化学与染整工程]