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Polymers 2017, 9(9), 431; https://doi.org/10.3390/polym9090431

A Self-Healing and Electrical-Tree-Inhibiting Epoxy Composite with Hydrogen-Bonds and SiO2 Particles

Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
These authors contributed equally to this work and should be considered co-first authors.
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Received: 30 June 2017 / Revised: 29 August 2017 / Accepted: 4 September 2017 / Published: 8 September 2017
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Abstract

Electrical tree growth in the insulation material is a main factor limiting the lifespan of insulation. A new method of increasing the durability and reliability of polymer dielectrics has been proposed by designing a three-phase electrical self-healing composite. SiO2 micro and nano particles were loaded in the sample which can improve the resistance to electrical tree breakdown. Materials with hydrogen bonds were synthesized and added into epoxy matrix to make the composite self-healable. It is found that both SiO2 and hydrogen-bonding self-healing material (HSM) can inhibit the electrical trees. Besides the self-healing behavior at the macro level, the incorporation of HSM can also make the micro defects such as electrical tree channel self-healable. The electrical self-healing composite will find a wide application in the field of electronic and electrical engineering. View Full-Text
Keywords: electrical self-healing; electrical tree; epoxy composite; insulation electrical self-healing; electrical tree; epoxy composite; insulation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Bian, W.; Wang, W.; Yang, Y. A Self-Healing and Electrical-Tree-Inhibiting Epoxy Composite with Hydrogen-Bonds and SiO2 Particles. Polymers 2017, 9, 431.

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