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A kind of preparation method of aluminum nitride nanoparticle modified transformer oil

A nanoparticle and transformer oil technology, applied in the petroleum industry, additives, lubricating compositions, etc., can solve problems such as the preparation method of aluminum nitride nanoparticle modified transformer oil, etc., and achieve excellent lightning shock characteristics, excellent thermal conductivity and high thermal conductivity. The effect of improved thermal performance, security and stability

Active Publication Date: 2018-10-19
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the specific preparation method of transformer oil modified with aluminum nitride nanoparticles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) The first step modification of AlN nanoparticles

[0020] (1-1) Put 10g of AlN nanoparticles in a tube furnace to raise the temperature from room temperature to 600°C at a rate of 10°C / min, and keep it at 600°C for 2 hours;

[0021] (1-2) Dissolve 10g of AlN nanoparticles in 600ml of absolute ethanol, the mass ratio of the two is 1:48, the solution is mixed evenly by ultrasonic oscillation, the time of ultrasonic oscillation is 5min, and the power is 800W;

[0022] (1-3) Add a certain mass of KH550 solution to the solution, the mass ratio of AlN to KH550 is 1:0.35, perform ultrasonic oscillation again, the time is 20min, and the power is 800W;

[0023] (1-4) The solution in step (1-3) was ball milled for 12 hours at a rotational speed of 200 r / min.

[0024] (1-5) Take out the ball-milled solution and heat it for 30 minutes at a temperature of 70°C;

[0025] (1-6) Vacuum-dry the heated solution for 36 hours at a temperature of 60° C. to obtain preliminary modified ...

Embodiment 2

[0033] (1) The first step modification of AlN nanoparticles

[0034] (1-1) Put 20g of AlN nanoparticles in a tube furnace to raise the temperature from room temperature to 600°C at a rate of 10°C / min, and keep it at 600°C for 3 hours;

[0035] (1-2) Dissolve 20g of AlN nanoparticles in absolute ethanol, the mass ratio of the two is 1:24, the solution is mixed evenly by ultrasonic oscillation, the time of ultrasonic oscillation is 10min, and the power is 1000W;

[0036] (1-3) Add a certain mass of KH550 solution to the solution, the mass ratio of AlN to KH550 is 1:0.45, perform ultrasonic oscillation again, the time is 25min, and the power is 1000W;

[0037] (1-4) The solution in step (1-3) was ball milled for 36 hours at a rotational speed of 250 r / min.

[0038] (1-5) Take out the ball-milled solution and heat it for 45 minutes at a temperature of 75°C;

[0039] (1-6) Vacuum-dry the heated solution for 42 hours at a temperature of 70° C. to obtain preliminary modified AlN na...

Embodiment 3

[0047] (1) The first step modification of AlN nanoparticles

[0048] (1-1) Put 40g of AlN nanoparticles in a tube furnace to raise the temperature from room temperature to 600°C at a rate of 10°C / min, and keep it at 600°C for 4 hours;

[0049](1-2) Dissolve 40g of AlN nanoparticles in 600ml of absolute ethanol, the mass ratio of the two is 1:12, the solution is mixed evenly by ultrasonic oscillation, the time of ultrasonic oscillation is 15min, and the power is 1200W;

[0050] (1-3) Add a certain mass of KH550 solution to the solution, the mass ratio of AlN to KH550 is 1:0.55, perform ultrasonic oscillation again, the time is 30min, and the power is 1200W;

[0051] (1-4) The solution in step (1-3) was ball milled for 48 hours at a rotational speed of 300 r / min.

[0052] (1-5) Take out the ball-milled solution and heat it for 60 minutes at a temperature of 80°C;

[0053] (1-6) Vacuum-dry the heated solution for 48 hours at a temperature of 80° C. to obtain preliminary modifie...

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Abstract

The invention relates to a preparation method of aluminum nitride (AlN) nanoparticle modified transformer oil, and belongs to the technical field of electric power industrial transformer oil preparation. AlN nanoparticle modification is divided into the following two steps: 1, AlN nanoparticles are dissolved in anhydrous ethanol, ultrasonic treatment and ball milling are adopted to graft the surface of the AlN nanoparticles with KH550, and heating and drying are carried out to obtain modified particles (1); and 2, ball milling is adopted to graft the surface of the modified particles (1) with oleic acid, and heating is carried out to obtain the finally modified AlN nanoparticles. The modified AlN nanoparticles and transformer oil are mixed and undergo ultrasonic dispersion to obtain the AlN nanoparticle modified transformer oil. The AlN nanoparticle modified transformer oil prepared through the preparation method has the advantages of excellent heat conduction performance and electrical performances, good long-term stability, and guaranteeing of the stability and the reliability in the service period.

Description

technical field [0001] The invention belongs to the technical field of transformer oil production in the electric power industry, and in particular relates to a preparation method of aluminum nitride nano-particle modified transformer oil. Background technique [0002] Transformer oil is widely used in today's power industry transformers as a good insulation and heat dissipation medium. With the increase of voltage level and capacity, people increasingly need a medium with better insulation and heat dissipation performance. With the rise of nanotechnology, the application of nanotechnology in transformer oil is gradually being explored at home and abroad. According to previous research results, after micron-sized fibers and other impurities are added to the transformer oil, the fibers and other impurities are oriented under the action of the electric field force, forming a "small bridge" in the transformer oil and bridging electrodes at different potentials, making The ins...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/20C10N40/14
Inventor 周远翔杨颖刘东霖
Owner TSINGHUA UNIV
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