Abstract
AbstractMultiwalled carbon nanotubes (MWCNTs) filled thermoplastic vulcanizate (TPV) dielectric elastomer based on polypropylene (PP)/ethylene‐propylene‐diene monomer blends were fabricated via a simple melt compounding. MWCNT could be selectively distributed in PP matrix which induced by the dynamic vulcanization reaction. By reducing the rotor speed of melting blending to 60 rpm, the MWCNT network formation can be effectively inhibited, which have been verified by a higher volume resistivity (above 109 Ω cm). With increasing the MWCNTs loading to 4.1 vol%, a maximum increase, 423.4% (from 3.04 to 12.87), of the dielectric constant have been achieved for TPV/MWCNTs elastomer at 103 Hz, while the dielectric loss is still lower than 0.072 at 101–103 Hz. Meanwhile, with various MWCNTs loading, the tensile recovery of these series TPV elastomer does not change anymore, resulting an excellent rebound resistance. The TPV elastomer exhibits an enhanced dielectric performance and balanced elastic recovery performance, providing a simple and scalable melt compounding approach to fabricate high‐performance dielectric elastomer.
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