Dielectric Properties of BaTiO₃/Epoxy and MWCNT/Epoxy Composites

Abstract:

Polymer ceramic composite materials are candidate material for capacitor application. In this research, MWCNT and BaTiO₃ were used as fillers in epoxy thin film composites where the filler loading was in the range of 0 to 2.0 vol%. The thin film composites were fabricated by using spin coating method. The dielectric constant and dielectric loss were measured at 100 Hz to 1 MHz. The dielectric constant of CNT was in the range of 3.5 to 243.7 whereas the dielectric constant of BaTiO₃ was 3.5 to 33.7 at 1 kHz. Meanwhile the dielectric loss of MWCNT was 0.009 to 6.83 while dielectric loss of BaTiO₃ was 0.009 to 0.016 at 1 kHz. In general, it was found that MWCNT filler provide high dielectric constant value compare to BaTiO₃ this is because MWCNT is more conductive than BaTiO₃. However MWCNT/epoxy composites exhibit higher dielectric loss compare to BaTiO₃/epoxy composites.

• Periodical: Advanced Materials Research (Volume 1024)
• Pages: 393-396
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1024.393
• Online since: August 2014
• Authors: Chen Ling Poh*, Mariatti Jaafar Mustapha, Ahmad Fauzi Mohd Noor, Abdul Rahman Mohamed, Tin Poay Chuah, Choong Kooi Chee
• Keywords: Barium Titanate (BaTiO₃), Dielectric Property, Epoxy Thin Film Composite, Multi-Wall Carbon Nanotube (MWCNT)

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