Effect of natural filler loading, multi-walled carbon nanotubes (MWCNTs), and moisture absorption on the dielectric constant of natural filled epoxy composites
Journal
Materials Science and Engineering: B
ISSN
09215107
Date Issued
2020-12-01
Author(s)
DOI
10.1016/j.mseb.2020.114744
Handle (URI)
Abstract
The effect of natural filler loading, multi-walled carbon nanotubes (MWCNTs), and moisture absorption on the dielectric constant of natural filled epoxy composites was investigated. The natural filled epoxy composites were fabricated using a natural filler, MWCNTs and epoxy resin. The natural fillers chosen were Jute, Kenaf, and Napier. Composites were manufactured using a cold-press method, with the loading of the natural fillers being 7, 14, and 21 vol%, respectively, while the MWCNTs were 0 and 2 vol%. Dielectric tests were conducted using an Agilent/Keysight E8363B PNA Network Analyser in dry and wet conditions. The moisture absorption curves indicate that higher vol% natural filler loading increases the moisture content of the composites. The results show that the Napier filled epoxy composite had the lowest dielectric constant between 12.40 GHz and 16.66 GHz. The presence of 2 vol% MWCNTs successfully decreased the dielectric constant for 7 vol% Jute filled epoxy composites.
Funding(s)
Ministry of Higher Education, Malaysia
Subjects
File(s)