ABSTRACT Low-dimensional carbon materials have been widely used to enhance the properties of polymer composites. However, low-dimensional carbon materials are easy to agglomerate in polymer matrix due to their nanoscale effects. It may be a good choice to use the coordination effect between nanomaterials of different dimensions to enhance the dispersion of fillers and the performance of composites. In this paper, the coordination effect between two-dimensional Ti3C2Tx MXene and one-dimensional carbon nanotubes (CNT) nanomaterials was used to prepare methyl vinyl silicone rubber (VMQ) composites with enhanced properties. The research shows that appropriate proportion of MXene and CNT can improve the dispersion of the fillers in the VMQ and optimize the conduction path, leading to enhanced interfacial polarization and micro-capacitor effect, and thus improved dielectric property of the composites. Dielectric constant of 7.85 (2.7 times of pure VMQ) was obtained in the VMQ composites, while the loss tangent was 0.00122 at 1 kHz. In addition, the mechanical properties were also improved, and the Young’s modulus value was lower than 500 kPa. The polymer composites prepared by adding nano-fillers of different dimensions display good properties, which has certain guiding significance for the high performance dielectric composites.
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