Anti-oxidizing nanometer mixed oil with low cost and preparation method thereof

Abstract

The invention discloses an anti-oxidizing nanometer mixed oil with low cost. The anti-oxidizing nanometer mixed oil is prepared from the following components in parts by weight: 30 to 50 parts of mineral oil, 15 to 20 parts of rapeseed oil, 4 to 8 parts of olive oil, 6 to 12 parts of castor oil, 15 to 30 parts of anhydrous ethanol, 1 to 5 parts of composite antioxidant, 1 to 3 parts of nanometer SiO2 (silicon dioxide) particle, 1 to 3 parts of nanometer ZnO (zinc oxide) particle, 1 to 3 parts of nanometer A12O3 (aluminum oxide) particle, 1 to 3 parts of polymethacrylate pour point depressant,0.5 to 2 parts of passivating agent, 0.5 to 1 part of viscosity regulator, and 0.5 to 1 part of metal chelating agent. The anti-oxidizing nanometer mixed oil has the advantages that the better anti-oxidizing property is realized, the oxidizing speed of the mixed oil is delayed, and the service life is prolonged; the pour point is smaller, and the use requirement under the low-temperature environment is met; the good electric property and physical-chemical property are realized, and the cost is low.

Description

technical field [0001] The invention relates to a mixed oil, in particular to a low-cost anti-oxidation nano mixed oil and a preparation method thereof. Background technique [0002] The power transformer is one of the key equipment for power grid power supply. Now the internal insulation of the oil-immersed power transformer is widely used 25# mineral insulating oil. However, mineral oil has disadvantages such as low ignition point, non-renewable, non-degradable, and poor biodegradability, and once leaked, it will have a serious impact on the ecological environment. Natural ester (vegetable oil) has good electrical properties, and the biodegradation rate is as high as 97%. Not yet ideal, which greatly limits its wide application. And adding nanoparticles to mineral insulating oil to form nanofluid can improve the dielectric strength and thermal conductivity of mineral insulating oil, but there are also the following problems: First, the stability and fiber The impact of ...

AI Technical Summary

Problems solved by technology

However, mineral oil has disadvantages such as low ignition point, non-renewable, non-degradable, and poor biodegradability, and once leaked, it will have a serious impact on the ecological environment

Natural ester (vegetable oil) has good electrical properties, and the biodegradation rate is as high as 97%, but it has a large freezing point, poor oxidation resistance, small interfacial tension, and physical and chemical parameters such as specific gravity, kinematic viscosity, water content, acid value and pour point It is not ideal, which greatly limits its wide application

And adding nanoparticles to mineral insulating oil to form nanofluid can improve the dielectric strength and thermal conductivity of mineral insulating oil, but there are also the following problems: First, the stability and fiber stability in complex electric, magnetic and thermal fields inside the transformer The influence of impurities such as impurities on the dispersion stability of nanoparticles, and the second is the influence of the physical and chemical parameters of nanoparticles on the dielectric and thermal conductivity of insulating oil