| Autor: |
Wang, Yongqiang, Zeng, Zhuo, Huang, Ziye, Shang, Jing |
| Předmět: |
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| Zdroj: |
Journal of Materials Science; Feb2022, Vol. 57 Issue 5, p3295-3308, 14p, 1 Color Photograph, 6 Diagrams, 1 Chart, 10 Graphs |
| Abstrakt: |
In order to improve the aging resistance of epoxy resin insulation materials and the cost-effectiveness and reliability of power apparatuses, a novel silicone-modified aging-resistant epoxy resin insulation material was developed. The modification was achieved via chemical grating, using dihydroxydiphenylsilane, 2-(3,4-epoxycyclohexyl)ethyltriethoxysilane and dicyclohexylamine. Accelerated thermal aging test, accelerated hydrothermal aging test and electrical tree test were carried out to compare the aging resistance of the novel, existing silicone-modified epoxy resin and unmodified epoxy resin under high temperature, humid environment and strong electric fields. The results show that compared with the unmodified resin, the novel material has advantages in thermal, hydrothermal aging resistance and electrical tree resistance. More specifically, after modification, the dielectric strength of the novel material after thermal aging test was improved by 12%; its partial discharge inception voltage (PDIV) after hydrothermal aging test was increased by 19.4% and the growth rate of electrical trees was 12.68% of that in unmodified resin. Compared with the existing silicone-modified epoxy resin, the novel silicone-modified epoxy resin sacrifices part of the hydrothermal properties, but showed better thermal stability, and the growth rate of electrical trees in the novel silicone-modified epoxy resin was 44.26% of that in the existing resin. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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