Mixed insulating oil and preparation method thereof

An insulating oil, hybrid technology, applied in the petroleum industry, lubricating compositions, base materials, etc., can solve the problems of high freezing point, high viscosity and poor oxidation resistance of natural esters, and achieve inhibition of insulation aging and high breakdown. The effect of voltage and good environmental performance

Inactive Publication Date: 2010-01-06
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although natural esters (vegetable oils) have high water saturation, natural esters are difficult to popularize due to problems s

Method used

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  • Mixed insulating oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] 15% vegetable oil; 85% mineral insulating oil.

Example Embodiment

[0028] Example 2

[0029] Vegetable oil: 15%; mineral insulating oil: 84%; 2,6-di-tert-butyl-p-cresol: 0.5%; alkylated phenyl-α-naphthylamine: 0.5%.

Example Embodiment

[0030] Example 3

[0031] Vegetable oil: 20%; mineral insulating oil: 79.5%; 2,6-di-tert-butyl-p-cresol: 0.2%; alkylated phenyl-α-naphthylamine: 0.3%.

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Abstract

The invention provides mixed insulating oil which has high degree of water saturation and can effectively restrain the aging of insulating paper. The mixed insulating oil contains the following raw materials in percentage by weight: 15-25 percent of plant oil and 75-85 percent of mineral insulating oil. Compared with the prior transformer oil, the mixed insulating oil has better oxidation stability and environmental-friendly performance as well as higher breakdown voltage and can effectively restrain the aging of the insulating paper so as to prolong the service life of a transformer, reduce the equipment fault and improve the safety and the reliability of the operation of the transformer. In addition, the invention also provides a preparation method of the mixed insulating oil.

Description

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Claims

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Application Information

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Owner CHONGQING UNIV
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