A kind of preparation method of hydrophilic corn insulating oil modified by nano-magnesium oxide

Abstract

The invention relates to the technical field of high-voltage electricity and insulating materials, and specifically discloses a preparation method of a hydrophilic corn insulating oil modified by nano-magnesium oxide, which comprises the following steps: vacuum drying the corn insulating oil, and then insulating the corn The oil is heated to 50-60° C., and mechanically stirred to obtain pre-treated corn insulating oil; nano-magnesium oxide is added to the pre-treated corn insulating oil, and the addition amount of the nano-magnesium oxide is 1~10% of the weight of the pre-treated corn insulating oil. 4%, and then ultrasonically oscillated to obtain hydrophilic corn insulating oil. The invention utilizes the preparation method of the hydrophilic corn insulating oil modified by nano-magnesium oxide, adds nano-magnesium oxide particles to the corn insulating oil, and can enhance the hydrophilicity of the insulating oil on the premise of ensuring the electrical insulating performance of the insulating oil, and has the advantages of: It is beneficial to absorb the moisture in the insulating paper, reduce the diffusion of a small amount into the insulating paper, reduce the damage of moisture to the insulating paper, and make the transformer run more stable.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electricity and insulating materials, in particular to a preparation method of hydrophilic corn insulating oil modified by nano-magnesium oxide. Background technique [0002] 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. At present, the commonly used insulating oil is mineral insulating oil. Mineral insulating oil is derived from the product and is a non-renewable resource. At the same time, its biodegradation rate is lower than 30%. Once leakage occurs, it will cause pollution to soil and water sources. In order to solve the increasingly important environmental problems and meet the requirements of sustainable development, green and environmentally friendly renewab...

AI Technical Summary

Problems solved by technology

Aiming at the problems that during the long-term operation of the transformer, the water molecules in the oil-paper insulation system will diffuse into the insulating paper, destroying the molecular structure of the insulating paper, causing irreversible decline in the mechanical properties and insulating properties of the insulating paper, etc., the present invention provides a nano-magnesium oxide The preparation method of the modified hydrophilic corn insulating oil includes adding nano-magnesium oxide particles into the corn insulating oil, which is beneficial to absorb the moisture in the insulating paper, reduces the damage of the molecular structure of the insulating paper by the water molecules, and is beneficial to the stable operation of the transformer of great significance

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