Daqiang Zhao , Xu Zhou , Tianhao Cui , Gui-Gen Wang
{"title":"纳米纤维素辅助构建用于增强电磁干扰屏蔽的多腔结构 Ti3C2Tx/melamine 复合海绵","authors":"Daqiang Zhao , Xu Zhou , Tianhao Cui , Gui-Gen Wang","doi":"10.1016/j.compositesa.2024.108347","DOIUrl":null,"url":null,"abstract":"<div><p>The deposition of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> nanosheets onto an ultralight melamine sponge (MS) holds great appeal for constructing mechanically robust and high-performance electromagnetic interference (EMI) shielding composites. However, the full potential of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> materials for shielding performance is impeded by the insufficient affinity between Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> nanosheets and MS. Herein, with the assistance of cellulose nanofibers (CNF), large-sized single-layer Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> nanosheets were firmly attached to the MS skeleton and enveloped the pores. The obtained Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>/MS composite sponges exhibit a unique multi-cavity structure. Moreover, hydrophobic modification was applied to the composites through the use of two-component silane coupling agents. The silane-modified multi-cavity structured composite sponges demonstrate significant enhancements in conductivity, mechanical strength, and environmental stability. Particularly, the incorporation of 17 wt% CNF leads to a 29.3 dB increases in shielding efficiency (SE) for the composite sponge. The enhancement can be attributed to the high reflectance of electromagnetic waves due to the highly conductive Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>/CNF cavity-membranes, the multiple internal reflections within the multi-cavity structure, and the improved interfacial polarization loss capability facilitated by the abundance of MXene-CNF interfaces.</p></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nanocellulose-assisted construction of multi-cavity structured Ti3C2Tx/melamine composite sponges for enhanced electromagnetic interference shielding\",\"authors\":\"Daqiang Zhao , Xu Zhou , Tianhao Cui , Gui-Gen Wang\",\"doi\":\"10.1016/j.compositesa.2024.108347\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The deposition of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> nanosheets onto an ultralight melamine sponge (MS) holds great appeal for constructing mechanically robust and high-performance electromagnetic interference (EMI) shielding composites. However, the full potential of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> materials for shielding performance is impeded by the insufficient affinity between Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> nanosheets and MS. Herein, with the assistance of cellulose nanofibers (CNF), large-sized single-layer Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> nanosheets were firmly attached to the MS skeleton and enveloped the pores. The obtained Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>/MS composite sponges exhibit a unique multi-cavity structure. Moreover, hydrophobic modification was applied to the composites through the use of two-component silane coupling agents. The silane-modified multi-cavity structured composite sponges demonstrate significant enhancements in conductivity, mechanical strength, and environmental stability. Particularly, the incorporation of 17 wt% CNF leads to a 29.3 dB increases in shielding efficiency (SE) for the composite sponge. The enhancement can be attributed to the high reflectance of electromagnetic waves due to the highly conductive Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>/CNF cavity-membranes, the multiple internal reflections within the multi-cavity structure, and the improved interfacial polarization loss capability facilitated by the abundance of MXene-CNF interfaces.</p></div>\",\"PeriodicalId\":282,\"journal\":{\"name\":\"Composites Part A: Applied Science and Manufacturing\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-07-06\",\"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/S1359835X24003440\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part A: Applied Science and Manufacturing","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359835X24003440","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}
Nanocellulose-assisted construction of multi-cavity structured Ti3C2Tx/melamine composite sponges for enhanced electromagnetic interference shielding
The deposition of Ti3C2Tx nanosheets onto an ultralight melamine sponge (MS) holds great appeal for constructing mechanically robust and high-performance electromagnetic interference (EMI) shielding composites. However, the full potential of Ti3C2Tx materials for shielding performance is impeded by the insufficient affinity between Ti3C2Tx nanosheets and MS. Herein, with the assistance of cellulose nanofibers (CNF), large-sized single-layer Ti3C2Tx nanosheets were firmly attached to the MS skeleton and enveloped the pores. The obtained Ti3C2Tx/MS composite sponges exhibit a unique multi-cavity structure. Moreover, hydrophobic modification was applied to the composites through the use of two-component silane coupling agents. The silane-modified multi-cavity structured composite sponges demonstrate significant enhancements in conductivity, mechanical strength, and environmental stability. Particularly, the incorporation of 17 wt% CNF leads to a 29.3 dB increases in shielding efficiency (SE) for the composite sponge. The enhancement can be attributed to the high reflectance of electromagnetic waves due to the highly conductive Ti3C2Tx/CNF cavity-membranes, the multiple internal reflections within the multi-cavity structure, and the improved interfacial polarization loss capability facilitated by the abundance of MXene-CNF interfaces.
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.