Effects of thermal aging on structure and dielectric properties of polypropylene/calcium carbonate nanocomposites

Azmi, A., Lau, K.Y., Ahmad, N.A., Abdul-Malek, Z., Tan, C.W., Ching, K. Y. ORCID: https://orcid.org/0000-0002-1528-9332 and Vaughan, A. S. (2020) Effects of thermal aging on structure and dielectric properties of polypropylene/calcium carbonate nanocomposites. In: 2020 IEEE 3rd International Conference on Dielectrics (ICD), 5-31 JUL 2020, Valencia, Spain. doi: 10.1109/ICD46958.2020.9341998 (Proceedings of 2020 IEEE 3rd International Conference on Dielectrics (ICD))

Abstract/Summary

This paper reports on an investigation of the effect of thermal aging on the structure and dielectric properties of unfilled polypropylene (PP) and PP nanocomposites containing 1 wt%, 2 wt%, and 5 wt% of calcium carbonate (CaCO3 ) nanofiller. Three different aging temperatures were considered, i.e., 20°C (unaged), 110°C, and 140°C. After aging, the dielectric strength of the samples was tested by means of DC breakdown testing. The results showed that, although the breakdown strength of PP nanocomposites was lower than that of unfilled PP before aging, the reduction in DC breakdown strength of PP nanocomposites was less pronounced compared with unfilled PP after aging. This indicated that the DC breakdown property of PP nanocomposites was less susceptible to thermal aging.

Item Type	Conference or Workshop Item (Paper)
URI	https://reading-clone.eprints-hosting.org/id/eprint/102086
Identification Number/DOI	10.1109/ICD46958.2020.9341998
Refereed	Yes
Divisions	University of Reading Malaysia
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