Abstract
Currently, polymeric composites with good thermal conductivity and simple preparation method are in the rapid increment of demand. In this work, polypropylene/graphite/graphene films (PP/Gr/G-3, 8 layers) with high thermal conductivity were developed by a multi-folding and hot-pressing strategy. The PP/Gr/G-3 composite films exhibit highly in-plane thermal conductivity of 17.23 W m−1·K−1 (TCE = 99.19%, compared with the PP/Gr/G-0 films). This high thermal conductivity is mainly due to the well-oriented structure of fillers and tightly laminated microstructure in composite which are induced by the facile and scalable multi-folding method. Additionally, the PP/Gr/G-3 composite films demonstrate enhanced mechanical properties with the tensile strength of ~ 26.26 MPa and toughness of ~ 0.52 MJ m−3. The effective fabrication strategy proposed in this work could be valuable for improving the thermal management properties of polymeric composites.
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This work was financially supported by the National Science Foundation of China (No. 51703122), the PetroChina Innovation Foundation (No. 2016D-5007-0508).
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Song, N., Wang, P., Cao, D. et al. Enhanced thermal conductivity of PP hybrid films induced by filler orientation and laminated structure. J Mater Sci 57, 2540–2549 (2022). https://doi.org/10.1007/s10853-021-06664-w
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DOI: https://doi.org/10.1007/s10853-021-06664-w