Flame-retardant and corrosion-resistant transformer vegetable insulating oil and preparation method thereof

Abstract

The invention discloses flame-retardant and corrosion-resistant transformer vegetable insulating oil, prepared from the following raw materials in parts by weight: 0.15-0.25 part of nano-silica hollow spheres, 0.3-0.5 part of barium petroleum sulfonate, 0.05-0.1 part of tea polyphenol, 0.03-0.05 part of an antioxidant butylated hydroxyanisole (BHA), 0.5-1 part of tricresyl phosphate, 0.03-0.05 part of tetrabutyl titanate, 0.2-0.4 part of propyl gallate, 0.5-1 part of boric acid, 5-10 parts of diethanol amine, 0.5-1 part of potassium perfluorobutane sulfonate, 80-100 parts of refined vegetable oil, 10-15 parts of absolute ethyl alcohol and 0.5-1 part of chlorinated paraffin-52. The vegetable insulating oil provided by the invention has the characteristics of being good in long-term oxidation stability and low in viscosity, is good in flame-retardant property and corrosion resistance, and has good usability, long service life and a high safety factor.

Description

technical field [0001] The invention relates to the technical field of transformer insulating oil, in particular to a flame-retardant and corrosion-resistant transformer vegetable insulating oil and a preparation method thereof. Background technique [0002] As an important liquid insulating medium, insulating oil is widely used in electrical equipment such as transformers. Mineral insulating oil is a liquid mixture composed of various hydrocarbons and is widely used due to its good electrical insulation, cooling properties and low cost. However, the ignition point of mineral insulating oil is low, and the fire safety performance is poor; at the same time, the biodegradation rate is low. If leakage or fire occurs, it will seriously pollute the environment, and it is difficult to meet the needs of high performance and environmental protection. Therefore, the development of new plant insulating oil It has gradually become a hot spot in the research of liquid insulating materi...

AI Technical Summary

Problems solved by technology

At the same time, vegetable insulating oil also has disadvantages such as high dielectric loss factor, high kinematic viscosity, prone to oxidation and gelation, and high requirements for transformer operation and maintenance.

CN102682869 effectively reduces the viscosity of vegetable insulating oil by performing transesterification reaction between refined vegetable oil and low-molecular alcohol, but the improvement of long-term oxidation resistance of vegetable insulating oil is limited