Dielectric and Curing Properties of ZnFe₂O₄ Loaded Epoxidized Natural Rubber (ENR 25)

Abstract:

Electroceramic with high magnetic properties such as ZnFe₂O₄ is widely used in many electronic device applications. One of the major drawbacks of electroceramic is the difficulty in molding and processing into desired shapes due to its brittle nature. Flexible electroceramic with the superior process and mold abilities can be made by mixing magnetic ceramic with a flexible matrix, for instance, rubber. In this present study, the aims were to produce ZnFe₂O₄ loaded epoxidized natural rubber (ENR 25) as well as to determine its electrical and curing properties. The magnetic ceramic of ZnFe₂O₄ was blended with ENR 25 at different loadings varying from 0 to 120 parts per hundred of rubber (phr) in an interval of 20. The properties of produced composites include scorch time, cure time, torque and dielectric properties were characterised. The results demonstrated that the increase of ZnFe₂O₄ concentration in ENR 25 leads to a significant increase in the dielectric constant from 4.94 to 5.62 at 1.15 MHz, and decrease in the dielectric loss curves of the composites start from 0.0827 to 0.0586. Furthermore, the results of curing property studies exhibited an increasing pattern of the composite torques, starting from 1.43 to 1.76 dN.m.

• Periodical: Materials Science Forum (Volume 1010)
• Pages: 292-297
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1010.292
• Online since: September 2020
• Authors: Suziey Syamimi Sukri, Syifa' Muhamad Sharifuddin, Mohd Shukri Mat Nor, Fathin Asila Mohd Pabli, Piyawadee Luangchuang, Wannarat Chueangchayaphan, Muhammad Azwadi Sulaiman*
• Keywords: Dielectric Properties, ENR 25, Magnetic Rubber Composite, ZnFe₂O₄

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