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Composite of vegetable insulating oil and modified nano powder and application and preparation method thereof

A vegetable insulating oil and nano-powder technology, applied in insulators, organic liquid insulators, organic insulators, etc., can solve the problems of high viscosity and poor heat dissipation performance of vegetable insulating oil, achieve good physical and chemical and dielectric properties, and enhance heat dissipation. , the effect of improving the dielectric properties

Inactive Publication Date: 2012-07-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high viscosity of vegetable insulating oil and the disadvantages of poor heat dissipation also limit its application.

Method used

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  • Composite of vegetable insulating oil and modified nano powder and application and preparation method thereof
  • Composite of vegetable insulating oil and modified nano powder and application and preparation method thereof
  • Composite of vegetable insulating oil and modified nano powder and application and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Fe with a diameter of about 40nm 3 o 4 (Ferric oxide) nano-powder is surface-treated. In the treatment step, the quality of adding oleic acid is 1% of the mass of the nano-powder. Ultrasonic dispersion is carried out at 50°C in a water bath while mechanical stirring is carried out. The reaction time is 1.5 hours. Hour;

[0045] (2) The dewatered and degassed vegetable insulating oil and the surface-treated Fe 3 o 4 The nanometer powders are mixed together, and the quality of the nanometer powders is 0.1% of the quality of the vegetable insulating oil.

[0046] (3) The mixed mixture is processed by ultrasonic oscillation, the ultrasonic frequency is 40kHz, the power density is 18W / cm2, the ultrasonic oscillation temperature is 50°C, and the oscillation time is 60min.

[0047] (4) Put the shaken mixture into a planetary ball mill, and use wet grinding method for processing, the rotation speed is 150r / min, and the processing time is 30min.

[0048] (5) Carry out v...

Embodiment 2

[0050] (1) Surface treatment is performed on AlN (aluminum nitride) nanopowders with a diameter of about 100nm. In the treatment step, the quality of dropping oleic acid is 4% of the mass of nanopowders, and then the mixed solution is placed in a water bath at 60°C. Ultrasonic dispersion, mechanical stirring at the same time, the reaction time is 2 hours;

[0051] (2) Mixing the dewatered and degassed vegetable insulating oil and the surface-treated AlN nanometer powder, where the quality of the nanometer powder is 0.01% of that of the vegetable insulating oil.

[0052] (3) The mixed mixture is treated by ultrasonic oscillation, the ultrasonic frequency is 40kHz, the power density is 18W / cm2, the ultrasonic oscillation temperature is 60°C, and the oscillation time is 30min.

[0053] (4) Add the shaken mixture into a planetary ball mill, and use a wet grinding method for processing, with a rotation speed of 150 r / min and a processing time of 60 min.

[0054] (5) Carry out vacu...

Embodiment 3

[0056] (1) Al with a diameter of about 600nm 2 o 3 (Al2O3) nano-powder is subjected to surface treatment. In the treatment step, the mass of oleic acid added is 10% of the mass of the nano-powder, and the mixed solution is ultrasonically dispersed in a water bath at 50° C., and the reaction time is 3 hours.

[0057] (2) The dehydrated and degassed vegetable insulating oil and the surface-treated Al 2 o 3 The nanometer powders are mixed together, and the quality of the nanometer powders is 0.5% of the quality of the vegetable insulating oil.

[0058] (3) The mixed mixture is processed by ultrasonic oscillation, the ultrasonic frequency is 40kHz, the power density is 18W / cm2, the ultrasonic oscillation temperature is 50°C, and the oscillation time is 20min.

[0059] (4) Add the shaken mixture into a planetary ball mill, and use a wet grinding method for processing, with a rotation speed of 150 r / min and a processing time of 60 min.

[0060] (5) Vacuum drying and vacuum degas...

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Abstract

The invention provides a composite of vegetable insulating oil and modified nano powder and application and preparation method thereof. The composite comprises vegetable insulating oil and nano powder, and the composite is used for preparing insulating oil. The preparation method includes the following steps: surface treatment is carried out on the nano powder; vegetable insulating oil subject towater removal and gas removal is mixed with the nano powder subject to surface treatment; the mixed insulating oil is subject to ultrasonic oscillation; and mixture obtained by oscillation treatment is added into a planet ball mill, and wet grinding is carried out. In the invention, nano powder is added into vegetable insulating oil, nano liquid dielectric medium can be formed, not only the dielectrical property of insulating oil can be improved, but also heat dissipation function of transformer winding coil can be improved; and the nano powder is far smaller than foreign particle in the insulating oil and can form stable sol system with the liquid dielectric medium, and a breakdown bridge can not be formed under the action of external electric field, thus improving the dielectrical strength of insulating oil.

Description

technical field [0001] The invention relates to the technical field of insulating oil, in particular to a vegetable oil compound, the application of the compound in the preparation of insulating oil, and a preparation method of the vegetable oil compound. Background technique [0002] Insulating oil is an important liquid insulating medium, which is widely used in electrical equipment such as transformers. The power transformer is one of the key equipment in the safe operation of the power grid. A serious accident of the transformer will not only cause its own damage, but also interrupt the power supply. The insulation breakdown caused by the deterioration of the insulation medium inside the transformer is often the main cause of the transformer failure. With the continuous improvement of transmission voltage levels, oil-paper composite insulation has become increasingly difficult to meet the strict requirements of high-voltage levels for large-capacity, miniaturized, and h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/20H01B19/00H01F27/32
Inventor 李剑杨丽君廖瑞金陈伟根孙才新唐炬杜林王有元张晓星
Owner CHONGQING UNIV
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