臭氧浓度对HTV硅橡胶材料的老化作用

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Abstract In order to study the influence of ozone created during corona discharge on HTV silicone rubber aging, this paper uses developed ozone generation system container to systematically test the ozone aging characteristic of HTV silicone rubber composite insulators, considering the influences of ozone density and aging time etc. Scanning electron microscopy(SEM) analysis, Fourier transform infrared spectral(FTIR) analysis, hydrophobicity analysis and thermally stimulated current (TSC) test are applied on the aging samples. The test results show that, ozone can result in more defects on silicone rubber surface and loss of hydrophobicity, and the aging becomes more severe under a higher ozone density. Further analysis reveals that the surface smoothness and dense physical structure of silicone rubber are destroyed in the ozone environment and thus defects such as holes appear. And the destruction of physical structure becomes more serious when the intensity of ozone reaches certain a degree. Meanwhile the chemical group content of the sample will change: Si-O-Si bond decreases, hydroxyl and Si-O bond increase, and the main chain and side chain of silicone rubber rupture.

Key words： HTV silicone rubber ozone concentration aging hydrophobicity thermally stimulated current(TSC) microanalysis

Received: 02 November 2011 Published: 27 November 2013

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TM852

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	Tu Youping
	Wang Qian
	Li Min
	Ding Lijian

Cite this article:

Tu Youping,Wang Qian,Li Min等. Influence of Ozone Concentration on Deterioration of HTV Silicon Rubber[J]. Transactions of China Electrotechnical Society, 2013, 28(1): 21-28.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I1/21

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