天然酯-普通纸（或热稳定纸）绝缘热老化特性

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Abstract In order to compare the properties of natural ester impregnated Kraft paper and thermally upgraded paper, sealed aging vessels containing copper, insulation paper (Kraft paper and thermally upgraded paper), and natural ester were aged at 90℃, 110℃, and 130℃ 399 days. The results show that both degree of polymerization(DP) and leveling-off degree of polymerization (LODP) for thermally upgraded paper were higher than the ones of Kraft paper at the same aging condition. The infrared spectrum evidence was given that there was dicyandiamide in thermally upgraded paper, and the aging resistance mechanisms of thermally upgraded paper were analyzed. Furfural can be absorbed by thermally upgraded paper and can be used to monitor the aging condition of a certain natural ester impregnated paper insulation. However, furfural can not be used to compare the aging condition of different types of paper immersed in natural ester. The different disciplinarians of the water content in natural ester were analyzed and the suggestion is given that the thermally upgraded paper are more suitable for natural ester impregnated paper insulation.

Key words： Transformer insulation aging natural ester thermally upgraded paper degree of polymerization

Received: 24 September 2008 Published: 18 February 2014

PACS:	TM835
	TM215.92

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	Articles by authors
	Liao Ruijin
	Liang Shuaiwei
	Yang Lijun
	Wang Hongmei
	Sun Caixin
	Sun Huigang

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Liao Ruijin,Liang Shuaiwei,Yang Lijun等. Insulation Thermal Aging Properties of Natural Ester Immersed Paper Comparing With That of Conventional and Thermally Upgraded Papers[J]. Transactions of China Electrotechnical Society, 2009, 24(12): 12-17.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2009/V24/I12/12

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