Flexible and flame-retarding phosphorylated MXene/polypropylene composites for efficient electromagnetic interference shielding
Article
Article Title | Flexible and flame-retarding phosphorylated MXene/polypropylene composites for efficient electromagnetic interference shielding |
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ERA Journal ID | 4724 |
Article Category | Article |
Authors | Tang, Tingting (Author), Wang, Shanchi (Author), Jiang, Yue (Author), Xu, Zhiguang (Author), Chen, Yu (Author), Peng, Tianshu (Author), Khan, Fawad (Author), Feng, Jiabing (Author), Song, Pingan (Author) and Zhao, Yan (Author) |
Journal Title | Journal of Materials Science and Technology |
Journal Citation | 111, pp. 66-75 |
Number of Pages | 10 |
Year | 2022 |
Publisher | Elsevier |
Place of Publication | China |
ISSN | 1005-0302 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jmst.2021.08.091 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1005030221010033 |
Abstract | Flame-retardant composites with high electromagnetic interference (EMI) shielding performance are desirable for electronic device packaging. Despite great potential of MXene for high EMI, it still remains a great challenge to develop high-performance flame-retardant polymer/MXene composites with excellent EMI shielding effectiveness because of the poor oxidative stability of MXene. Herein, phosphorylated MXene/polypropylene (PP) composites are prepared by coating phosphorylated MXene on PP fabric followed by spraying polyethylenimine (PEI) and hot-pressing. The phosphorylated MXene proves to be more durable against oxidation than pure MXene due to the protection effect of polyphosphates. Upon hot-pressing, melted PP fibers are fused together at their contact points and thus as-prepared composites are bi-continuous with two interpenetrating phases. The composites show significantly improved thermal stability and flame retardancy relative to pure PP, with a low total heat release (THR) of 3.7 kJ/g and a heat release rate (HRR) of 50.0 W/g, which are reduced by 78% and 87%, respectively. In addition, the composites exhibit a high electrical conductivity of ∼36,700 S/m and an EMI shielding performance of ∼90 dB over the whole frequency range of 8–12 GHz with a thickness of ∼400 μm. The as-developed PP/MXene composites hold great promise for reliable protection of next-generation electronic devices working in complex environments. |
Keywords | MXene; Flame retardancy; Polypropylene composite; EMI shielding |
ANZSRC Field of Research 2020 | 401605. Functional materials |
401609. Polymers and plastics | |
401602. Composite and hybrid materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Soochow University, China |
Jiaxing University, China | |
Beijing Institute of Aeronautical Materials, China | |
Centre for Future Materials | |
Institution of Origin | University of Southern Queensland |
Funding source | Australian Research Council (ARC) Grant ID DP190100188 |
Funding source | Australian Research Council (ARC) Grant ID DP190102992 |
https://research.usq.edu.au/item/q7221/flexible-and-flame-retarding-phosphorylated-mxene-polypropylene-composites-for-efficient-electromagnetic-interference-shielding
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