Highly Thermally Conductive and Flame-Retardant Waterborne Polyurethane Composites with 3D BNNS Bridging Structures via Magnetic Field Assistance

Highly Thermally Conductive and Flame-Retardant Waterborne Polyurethane Composites with 3D BNNS Bridging Structures via Magnetic Field Assistance

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 de...

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Bibliographic Details
Main Authors: Hao Jiang, Yuhui Xie, Mukun He, Jindao Li, Feng Wu, Hua Guo, Yongqiang Guo, Delong Xie, Yi Mei, Junwei Gu
Format: Article
Language:English
Published: SpringerOpen 2025-02-01
Series:Nano-Micro Letters
Subjects:
Boron nitride nanosheets
Magnetic response
Structural design
Thermal conductivity
Flame retardancy
Online Access:https://doi.org/10.1007/s40820-025-01651-1
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Summary: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.
ISSN:2311-6706
2150-5551

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