首页|Heterogeneous interface enhanced polyurethane/MXene@Fe3O4 composite elastomers for electromagnetic wave absorption and thermal conduction
Heterogeneous interface enhanced polyurethane/MXene@Fe3O4 composite elastomers for electromagnetic wave absorption and thermal conduction
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The development of high-performance functional composites has become a research hotspot in response to the hazards of over-heating and electromagnetic radiation in modem electronic devices.Herein,we grew magnetic Fe3O4 particles in situ on the MXene layer to obtain an MXene@Fe3O4 composite with rich heterogeneous interfaces.Owing to the unique heterostructure and the synergistic effects of multiple electromagnetic wave absorption mechanisms,the composite achieved a minimum reflection loss of-27.14 dB and an effect-ive absorption bandwidth of 2.05 GHz at an absorption thickness of 2 mm.Moreover,the MXene@Fe3O4 composite could be encapsu-lated in thermoplastic polyurethane(TPU)via thermal curing.The obtained composite elastomer exhibited a strong tensile strength,and its thermal diffusivity was 113％higher than that of pure TPU.Such additional mechanical properties and thermal conduction features render this composite elastomer an advanced electromagnetic absorber to adapt to the ever-changing environment for expanding practical applications.
Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province,College of Engineering,Zhejiang Normal University,Jinhua 321004,China
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,International Innovation Center for Forest Chemicals and Materials,College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China
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