Aluminum nitride-silicon carbide nanoparticles transformer oil with strong thermal stability and preparation method thereof

Abstract

The invention discloses aluminum nitride-silicon carbide nanoparticles transformer oil with strong thermal stability and a preparation method thereof. The transformer oil is characterized by comprising the following raw materials in parts by weight: 1000-1200 parts of naphthenic base oil, 2-3 parts of aluminum nitride, 0.2-0.5 part of magnesium acetate, 0.3-0.5 part of calcium stearate, 0.2-0.5 part of aluminum isopropoxide, 0.2-0.4 part of silver nitrate, 0.2-0.4 part of sodium benzoate, 2-3 parts of silicon carbide, 0.3-0.5 part of petroleum barium sulfonate and 0.3-0.7 part of additives. According to the invention, absolute ethyl alcohol is used in ball milling of inorganic powder to obtain nanoparticles, the used equipment is simple and the operation is easy; the added aluminum nitride nanoparticles have the characteristics of good dielectric properties, high stability, good thermal conductivity and small thermal expansion coefficient, the added silicon carbide nanoparticles have high temperature resistance, abrasion resistance and high thermal conductivity and can be contributed to the insulation and moisture resistance, arc extinction performance, heat dissipation property and thermal stability to a great extent when the silicon carbide nanoparticles are applied in transformer oil; and by adding other ingredients, transformer oil is prevented from easily oxidizing and deteriorating, is clean and free of impurities and has the advantages of enhanced dehydration and stability and prolonged service life.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to an aluminum nitride-silicon carbide nano particle transformer oil with strong thermal stability and a preparation method thereof. Background technique [0002] Transformer oil is a kind of mineral oil obtained through distillation and refining from natural petroleum. It is a pure and stable liquid natural hydrocarbon with low viscosity, good insulation and good cooling performance obtained by refining the lubricating oil fraction in petroleum with acid and alkali. mixture of compounds. Commonly known as square shed oil, light yellow transparent liquid, relative density 0.895. Freezing point <-45 ℃, mainly composed of three kinds of hydrocarbons, the main component is cycloalkane, and the others are naphthenic saturated hydrocarbons, aromatic unsaturated hydrocarbons and other compounds. In my country, transformer oil includes paraffinic base oil and naphthenic oil. Paraffinic oil i...

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Problems solved by technology

Transformer oil is inevitably in contact with air during use, which will cause the oil to oxidize and generate some acidic substances. The acidic substances will corrode metal materials such as copper and iron in the equipment, and the generated sludge will stick to the coil and insulating parts, causing blockage. channel, accelerated aging of solid insulating materials