Structural and hetero-interfacial engineering of magnetic bimetallic composites based polyurethane microwave absorbing coating for marine environment

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-02-08 DOI:10.1016/j.compositesa.2025.108770

Qiaoqiao Han , Junhuai Xu , Jianyang Shi , Mi Zhou , Haibo Wang , Liang Geng , Junjie Xiong , Zongliang Du

{"title":"Structural and hetero-interfacial engineering of magnetic bimetallic composites based polyurethane microwave absorbing coating for marine environment","authors":"Qiaoqiao Han , Junhuai Xu , Jianyang Shi , Mi Zhou , Haibo Wang , Liang Geng , Junjie Xiong , Zongliang Du","doi":"10.1016/j.compositesa.2025.108770","DOIUrl":null,"url":null,"abstract":"<div><div>Construction of microwave-absorbing materials adapted to marine application scenarios remain a challenge. Herein, environmentally stable Co<sub>x</sub>Ni<sub>y</sub>@C absorbers are fabricated. The CoNi-C heterogeneous interface in these absorbers induces a more inhomogeneous space charge distribution than Co-C and Ni-C interfaces, contributing to strong hetero-interfacial polarization and thereby improving microwave absorption performance. The C2 absorber demonstrated an EAB of 5.68 GHz, covering the entire Ku-band at a thickness of 1.98 mm. Additionally, simulations revealed an excellent radar stealth effect in unmanned aerial vehicle (UAV) mode. The 3D graphite skeleton of the absorber can extend the diffusion path of corrosive media and facilitate bacterial deposition, producing synergistic anti-corrosion and antibacterial effects. After immersion in a 3.5 % NaCl solution for 47 days, the |Z|<sub>0.01Hz</sub> value of polyurethane (PU)/C2 coating remained at 6.32 × 10<sup>8</sup> Ω cm<sup>2</sup>, indicating superior anticorrosion characteristics. The antibacterial rates of C2 reached 99.77 % against <em>Escherichia coli</em> and 99.11 % against <em>Staphylococcus aureus</em>. This work offers fresh concepts for the development of next-generation multifunctional microwave absorbents.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"192 ","pages":"Article 108770"},"PeriodicalIF":8.1000,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part A: Applied Science and Manufacturing","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359835X25000648","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}

引用次数: 0

Abstract

Construction of microwave-absorbing materials adapted to marine application scenarios remain a challenge. Herein, environmentally stable Co_xNi_y@C absorbers are fabricated. The CoNi-C heterogeneous interface in these absorbers induces a more inhomogeneous space charge distribution than Co-C and Ni-C interfaces, contributing to strong hetero-interfacial polarization and thereby improving microwave absorption performance. The C2 absorber demonstrated an EAB of 5.68 GHz, covering the entire Ku-band at a thickness of 1.98 mm. Additionally, simulations revealed an excellent radar stealth effect in unmanned aerial vehicle (UAV) mode. The 3D graphite skeleton of the absorber can extend the diffusion path of corrosive media and facilitate bacterial deposition, producing synergistic anti-corrosion and antibacterial effects. After immersion in a 3.5 % NaCl solution for 47 days, the |Z|_0.01Hz value of polyurethane (PU)/C2 coating remained at 6.32 × 10⁸ Ω cm², indicating superior anticorrosion characteristics. The antibacterial rates of C2 reached 99.77 % against Escherichia coli and 99.11 % against Staphylococcus aureus. This work offers fresh concepts for the development of next-generation multifunctional microwave absorbents.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.