The Effect of Water Absorption on the Dielectric Response of Calcined Zirconia-based Polyethylene Nanocomposites

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI:10.1109/ICPADM49635.2021.9493954

K. Y. Lau, C. W. Tan, K. Y. Ching, N. H. Rahim, A. Vaughan

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Abstract

Polymer nanocomposites have become one of the attractive research areas in exploring new dielectric materials. This is due to their potential dielectric property enhancements as a consequence of nanostructuration. However, the degradation of the dielectric performance of nanocomposites has also been reported and this is can be related to the presence of water within the materials. The main objective of the current work was to investigate the effects of water absorption on the mass change and dielectric response of polyethylene (PE) nanocomposites containing uncalcined and calcined zirconia (ZrO2) nanofillers. The results show that nanocomposites containing uncalcined ZrO2 exhibited a marginal increase in the real permittivity after water immersion. Under similar water immersion periods, nanocomposites containing calcined ZrO2 also demonstrated a marginal increase in the real permittivity. Factors influencing the dielectric response of the nanocomposites after ZrO2 calcination and water immersion are discussed.

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吸水率对氧化锆基聚乙烯纳米复合材料介电响应的影响

聚合物纳米复合材料已成为探索新型介电材料的研究热点之一。这是由于其潜在的介电性能增强作为纳米结构的结果。然而，纳米复合材料的介电性能下降也有报道，这可能与材料中存在水有关。本研究的主要目的是研究吸水率对含有未煅烧和煅烧氧化锆(ZrO2)纳米填料的聚乙烯(PE)纳米复合材料质量变化和介电响应的影响。结果表明，含有未煅烧ZrO2的纳米复合材料在水浸后的实际介电常数略有增加。在相同的浸水时间下，含有焙烧ZrO2的纳米复合材料也表现出实际介电常数的边际增加。讨论了影响ZrO2煅烧和水浸后纳米复合材料介电响应的因素。

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2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)

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