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Simultaneously Improved Thermal and Dielectric Performance of Epoxy Composites Containing Ti3C2Tx Platelet Fillers.


ABSTRACT: Polymer composites with enhanced thermal and dielectric properties can be widely used in electric and energy related applications. In this work, epoxy composites have been prepared with Ti3C2Tx, one of the most studied MXene materials that can be massively produced by direct etching using hydrofluoric acid. The addition of conductive two dimensional Ti3C2Tx platelet fillers leads to improved but anisotropic thermal conductivity of the composites. The through-plane thermal conductivity reaches 0.583 Wm-1K-1 and the in-plane thermal conductivity reaches 1.29 Wm-1K-1 when filler content is 40 wt% (21.3 vol%), achieving enhancements of 2.92 times and 10.65 times respectively, as compared with epoxy matrix. The dielectric permittivity of epoxy composite is enhanced by a factor of ~2.25 with 40 wt% fillers, and the dielectric losses are within a small value of 0.02. The results prove the effectiveness of Ti3C2Tx in simultaneously improving thermal and dielectric performance of epoxy composites, and it is deduced that further improvements may be obtained by using Ti3C2Tx nanoflake fillers.

SUBMITTER: Chen L 

PROVIDER: S-EPMC7408071 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Simultaneously Improved Thermal and Dielectric Performance of Epoxy Composites Containing Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Platelet Fillers.

Chen Lin L   Cao Yu Y   Guo Xuebo X   Song Ping P   Chen Kai K   Li Diansen D   Lin Jun J  

Polymers 20200719 7


Polymer composites with enhanced thermal and dielectric properties can be widely used in electric and energy related applications. In this work, epoxy composites have been prepared with Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>, one of the most studied MXene materials that can be massively produced by direct etching using hydrofluoric acid. The addition of conductive two dimensional Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> platelet fillers leads to improved but anisotropic thermal conductivity of  ...[more]

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