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preparation of anti-charge-accumulation insulating oil from nano TiO2 modified sunflower seed oil

A technology of sunflower oil and charge accumulation, which is applied in the petroleum industry, additives, lubricating compositions, etc., can solve problems such as the inability to ensure the safe operation of insulating oil paper, and achieve the goal of improving the anti-charge accumulation performance, improving compatibility, and solving agglomeration Effect

Active Publication Date: 2021-10-22
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, sunflower seed insulating oil has been used as transformer insulating oil due to its advantages of breakdown resistance, high ignition point, and environmental protection, but the space charge accumulation characteristics of sunflower seed insulating oil cannot guarantee the safe operation of insulating oil paper, thus limiting its wide application

Method used

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  • preparation of anti-charge-accumulation insulating oil from nano TiO2 modified sunflower seed oil
  • preparation of anti-charge-accumulation insulating oil from nano TiO2 modified sunflower seed oil
  • preparation of anti-charge-accumulation insulating oil from nano TiO2 modified sunflower seed oil

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Effect test

Embodiment 1

[0024] A kind of nano-TiO 2 Modified sunflower oil prepares anti-charge accumulation insulating oil, comprising the following steps:

[0025] (1) Preparation of modified nano-TiO 2 : Weigh 5g TiO 2 Put the nanoparticles into the grinder, grind for 3 hours at a speed of 300r / min, and then put the nano-TiO 2 Add in 200ml dehydrated alcohol and mix, add the modifier that is oleic acid, acrylic acid rosin polyoxyethylene sucrose ester and the polyethylene glycol composition of 3:1:1 mass ratio to carry out surface modification to mixed solution again, so The amount of modifier added is TiO 2 8%, washed with ethanol, fully dried at a pressure of 50Pa and a temperature of 60°C to obtain modified nano-TiO 2 .

[0026] (2)TiO 2 Modified sunflower oil: vacuum-dry 500g of sunflower seed insulating oil at room temperature, heat to 45°C, stir for 30min at a speed of 100r / min, and then add the above-mentioned modified nano-TiO to the sunflower seed insulating oil 2 , under the power...

Embodiment 2

[0028] A kind of nano-TiO 2 Modified sunflower oil prepares anti-charge accumulation insulating oil, comprising the following steps:

[0029] (1) Preparation of modified nano-TiO 2 : Weigh 10g TiO 2 Put the nanoparticles into the grinding machine, grind for 2 hours at a speed of 500r / min, and then put the nano-TiO 2 Add in 200ml dehydrated alcohol and mix, add the modifier that is 4:2:1 oleic acid, acrylic acid rosin polyoxyethylene sucrose ester and polyethylene glycol composition to carry out surface modification in the mixed solution again, so The amount of modifier added is TiO 2 7%, washed with ethanol, fully dried at a pressure of 50Pa and a temperature of 60°C to obtain modified nano-TiO 2 .

[0030] (2)TiO 2 Modified sunflower oil: Vacuum dry 500g of sunflower seed insulating oil at room temperature, heat to 50°C, stir for 60min at a speed of 50r / min, and then add the above-mentioned modified nano-TiO to the sunflower seed insulating oil 2 , under the power of 1...

Embodiment 3

[0032] A kind of nano-TiO 2 Modified sunflower oil prepares anti-charge accumulation insulating oil, comprising the following steps:

[0033] (1) Preparation of modified nano-TiO 2 : Weigh 15g TiO 2 Nanoparticles were put into a grinder, and ground for 2.5h at a speed of 400r / min, and then the nano-TiO 2 Add in 200ml dehydrated alcohol and mix, then add the modifier that the mass ratio is 3:2:1 oleic acid, acrylic acid rosin polyoxyethylene sucrose ester and polyethylene glycol composition to the mixed solution to carry out surface modification, so The amount of modifier added is TiO 2 6%, washed with ethanol, and fully dried at 60Pa pressure and 70°C temperature to obtain modified nano-TiO 2 .

[0034] (2)TiO 2 Modified sunflower oil: Vacuum-dry 500g of sunflower seed insulating oil at room temperature, heat to 55°C, stir for 30min at a speed of 150r / min, and then add the above-mentioned modified nano-TiO to the sunflower seed insulating oil 2 , under the power of 1200...

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Abstract

The invention discloses preparation of anti-charge-accumulation insulating oil from nano TiO2 modified sunflower seed oil. The preparationcomprises the following steps: drying sunflower seed insulating oil in vacuum, heating to 40-60 DEG C, stirring for 30-60 minutes, adding modified nano TiO2 accounting for 1-4% of the mass of the sunflower seed insulating oil into the sunflower seed insulating oil, and ultrasonically oscillating uniformly to obtain modified sunflower seed oil, wherein the preparation method of the modified nano TiO2 comprises the following steps: putting nano TiO2 particles into a grinding machine, fully grinding, adding absolute ethyl alcohol, mixing, adding a modifier composed of oleic acid, acrylic acid rosin polyoxyethylene sucrose ester and polyethylene glycol into the mixed solution, carrying out surface modification, washing with ethyl alcohol, and drying to obtain the modified nano TiO2. According to the method disclosed by the invention, sunflower seed insulating oil is modified by adopting nano titanium dioxide (TiO2) particles, so that the charge accumulation resistance of the sunflower seed insulating oil is improved, charges are easy to dissipate and difficult to accumulate on the premise of ensuring the electrical insulating property of the sunflower seed insulating oil, the electric field distortion degree caused by charge accumulation is reduced, and the operation of the transformer is safer.

Description

technical field [0001] The invention relates to the technical field of electrical insulation, in particular to a 2 Modified sunflower oil to prepare insulating oil against charge accumulation. Background technique [0002] The power system provides important energy for all walks of life, and it plays an indispensable role in my country's current social and economic development and people's lives. Oil-immersed transformer is a key equipment in the power system, and its failure will cause accidents such as power outages. Therefore, it is very important to ensure the safe and reliable operation of the transformer. [0003] Oil-immersed transformer is the key equipment of power system, its failure will lead to power outage and cause great economic loss. The insulation performance of oil-immersed transformers mainly depends on the inner insulation composed of insulating oil and insulating paper. During the long-term operation of the oil-paper insulation system, the space char...

Claims

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Application Information

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IPC IPC(8): C10M125/10C10M177/00C10N30/04C10N40/16
CPCC10M125/10C10M177/00C10M2201/062C10M2201/14C10M2207/401C10M2207/126C10M2209/104C10M2209/12C10N2030/04C10N2040/16C10N2020/06
Inventor 刘捷丰张镱议邢中玉李毅范贤浩
Owner GUANGXI UNIV
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