{"title":"Highly Thermally Conductive\nand Flame-Retardant Waterborne Polyurethane Composites with 3D BNNS Bridging Structures via Magnetic\nField Assistance","authors":"Hao Jiang, Yuhui Xie, Mukun He, Jindao Li, Feng Wu, Hua Guo, Yongqiang Guo, Delong Xie, Yi Mei, Junwei Gu","doi":"10.1007/s40820-025-01651-1","DOIUrl":null,"url":null,"abstract":"<div><h2>Highlights</h2><div>\n \n <ul>\n <li>\n <p>By simultaneously incorporating the magnetic filler-modified boron nitride nanosheets (M@BNNS) and the non-magnetic filler U-BNNS into the polymer matrix, a three-dimensional heat conduction pathway composites are obtained under a horizontal magnetic field.</p>\n </li>\n <li>\n <p>Owing to the microstructural design of the 3D-bridging architecture, with the addition of only 5 wt% U-BNNS, the <i>λ</i><sub><b>⊥</b></sub> of composites achieved 2.88 W m<sup>−1</sup> K<sup>−1</sup>, representing a remarkable increase of 194.2% compared to single-oriented composites.</p>\n </li>\n <li>\n <p>The 3D-bridging architecture composite also demonstrates excellent flame retardancy, attributed to the synergistic mechanisms of condensed and gas phases, effectively mitigating the risks of thermal runaway in electronic devices.</p>\n </li>\n </ul>\n </div></div>","PeriodicalId":714,"journal":{"name":"Nano-Micro Letters","volume":"17 1","pages":""},"PeriodicalIF":36.3000,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40820-025-01651-1.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano-Micro Letters","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s40820-025-01651-1","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
Highlights
By simultaneously incorporating the magnetic filler-modified boron nitride nanosheets (M@BNNS) and the non-magnetic filler U-BNNS into the polymer matrix, a three-dimensional heat conduction pathway composites are obtained under a horizontal magnetic field.
Owing to the microstructural design of the 3D-bridging architecture, with the addition of only 5 wt% U-BNNS, the λ⊥ of composites achieved 2.88 W m−1 K−1, representing a remarkable increase of 194.2% compared to single-oriented composites.
The 3D-bridging architecture composite also demonstrates excellent flame retardancy, attributed to the synergistic mechanisms of condensed and gas phases, effectively mitigating the risks of thermal runaway in electronic devices.
将磁性填料修饰的氮化硼纳米片（M@BNNS）和非磁性填料U-BNNS同时加入到聚合物基体中，在水平磁场下获得了三维热传导通道复合材料。由于3d桥接结构的微结构设计，仅添加5 wt%的U-BNNS，复合材料的λ⊥达到2.88 W m−1 K−1，与单取向复合材料相比显着增加了194.2%。3d桥接结构复合材料也表现出优异的阻燃性，归因于凝聚相和气相的协同机制，有效地降低了电子设备中热失控的风险。
期刊介绍：
Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand.
Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields.
Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.
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