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Mechanical Properties of Epoxy/Micro-silica and Epoxy/Micro-alumina Composites

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Abstract

Mechanical properties of epoxy/micro-silica and epoxy/micro-alumina composites were studied in order to develop an insulation material for high voltage application. Tensile and flexural tests were carried out at a crosshead speed of 10 mm/min using universal testing machine. Tensile and flexural strength increased with increasing micro-silica content, while in epoxy/micro-alumina composite, properly dispersed micro-alumina enhanced the tensile and flexural strength, but too much dispersed micro-alumina exhibited rather adverse effects. It was due to the hydrogen bonding between silanol groups on the silica surface and hydroxyl groups in the epoxy matrix, while there was no hydrogen bonding between alumina and epoxy matrix.

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  1. Department of Electrical and Electronic Engineering, Joongbu University, Goyang, Gyeonggi-do, 412-480, Korea

    Jae-Jun Park

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  1. Jae-Jun Park
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Correspondence to Jae-Jun Park.

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Park, JJ. Mechanical Properties of Epoxy/Micro-silica and Epoxy/Micro-alumina Composites. Trans. Electr. Electron. Mater. 19, 481–485 (2018). https://doi.org/10.1007/s42341-018-0074-0

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  • DOI: https://doi.org/10.1007/s42341-018-0074-0

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