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Nano titanium oxide modified transformer oil preparation method

A technology of nano-titanium oxide and transformer oil, which is applied in the petroleum industry, additives, lubricating compositions, etc., can solve the problem of difficult control of the amount of surface dispersant, and achieve the effect of being suitable for large-scale production, good stability, and avoiding hard agglomeration

Active Publication Date: 2014-10-22
STATE GRID CORP OF CHINA +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the selection and dosage of surface dispersants are difficult to control during the preparation of nanofluids.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Take 30mL transformer oil and 661μL tetrabutyl titanate in a beaker, stir vigorously evenly, then pass water-containing nitrogen into the mixture to promote the hydrolysis of tetrabutyl titanate, and react at 80°C for 3h ;

[0019] 2) After the reaction is finished, the mixture is vigorously stirred at 60° C. to remove residual moisture in the mixture;

[0020] 3) Cool the water-removed mixture to room temperature, add 661 μL oleic acid dropwise to the water-removed mixture, and obtain a stable nano-titanium oxide modified transformer oil after ultrasonication for 1 hour. The modified transformer oil can be kept stable for 60 days Left and right without obvious precipitation.

Embodiment 2

[0022] 1) Take 30mL transformer oil and 800μL tetrabutyl titanate in a beaker, stir vigorously evenly, then pass water-containing nitrogen into the mixture to promote the hydrolysis of tetrabutyl titanate, and react for 2 hours at 60°C ;

[0023] 2) After the reaction, the mixture was vigorously stirred at 80° C. to remove the remaining moisture in the mixture;

[0024] 3) Cool the dehydrated mixture to room temperature, add 2000 μL oleic acid dropwise to the dehydrated mixture, and obtain stable nano-titanium oxide modified transformer oil after ultrasonication for 2 hours. The modified transformer oil can be kept stable for 60 days Left and right without obvious precipitation.

Embodiment 3

[0026] 1) Take 30mL transformer oil and 1000μL tetrabutyl titanate in a beaker, stir vigorously evenly, then pass water-containing nitrogen into the mixture to promote the hydrolysis of tetrabutyl titanate, and react at 80°C for 1h ;

[0027] 2) After the reaction is over, the mixture is vigorously stirred at 90° C. to remove residual moisture in the mixture;

[0028] 3) Cool the dehydrated mixture to room temperature, add 3200 μL oleic acid dropwise to the dehydrated mixture, and obtain stable nano-titanium oxide modified transformer oil after ultrasonication for 3 hours. The modified transformer oil can be kept stable for 60 days Left and right without obvious precipitation.

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Abstract

The invention discloses a nano titanium oxide modified transformer oil preparation method. The method comprises the following steps: 1)uniformly mixing the transformer oil and tetrabutyl titanate, introducing aqueous nitrogen, and reacting for 1-3 hours under the temperature of 50-80 DEG C; 2)removing the residual moisture under the temperature of 60-100 DEG C; and 3)adding oleic acid, and performing ultrasonic treatment to obtain the nano titanium oxide modified transformer oil. According to the invention, hydrolysis of tetrabutyl titanate in the transformer oil is employed for acquiring the nano titanium oxide modified transformer oil, the transformer oil in the nano titanium oxide modified transformer oil is a disperse medium, nano titanium oxide particles are disperse phase, direct preparation of the inorganic nano particles in the disperse phase can save the storage and drying processes of the particles, so that hard agglomeration among particles can be avoided, titanium oxide in the transformer oil is dispersed to nano level, and can be dispersed in the transformer oil in a stable mode, and the nano titanium oxide modified transformer oil with good stability is obtained.

Description

technical field [0001] The invention relates to titanium oxide nano fluid, in particular to a preparation method of nano titanium oxide modified transformer oil. Background technique [0002] The thermal conductivity of traditional transformer oil is small, about 0.11Wm -1 K -1 . In order to adapt to the development direction of large capacity, ultra-high voltage level and miniaturization of power transformers, improve the long-term insulation properties of traditional transformer oils, and research transformer oils with higher insulation properties and better anti-aging properties are imminent. [0003] At present, nanotechnology has been widely used in many research and industrial application fields such as micro-nano electronic technology, heat transfer enhancement and surface treatment in the world, and the concept of nanofluid has been proposed. The so-called nanofluid usually refers to dispersing metal or non-metallic nanoparticles with a particle size of less than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/10C10M177/00
Inventor 蔡炜伍志荣赵志刚张伟静陈胜男廖晶张荣华崔德尼
Owner STATE GRID CORP OF CHINA
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