Preparation method of insulation material for electrical equipment

Abstract

The invention provides a preparation method of an insulation material for electrical equipment. The method comprises the following steps that a, magnesium oxide, silicon dioxide and cellulose are mixed; ball grinding is performed to obtain a first mixture; b, epoxy resin, paraffin, polytetrafluoroethylene and a silane coupling agent are subjected to mixing and banburying; then, a plasticizer, an inorganic thickening agent and deionized water are added; stirring reaction is performed to obtain a second mixture; c, the first mixture is added into the second mixture; then, nanometer zinc oxide, nanometer calcium carbonate and a dispersing agent are added; heating reaction is performed to obtain a third mixture; d, dibenzoyl peroxide, nanometer aluminum oxide and an anionic surfactant are added into the third mixture for stirring; the mixture is guided into a double screw extruder; extrusion molding is formed; cooling is performed to normal temperature. The prepared insulation material hasthe effects of corrosion resistance, humidity resistance, high temperature resistance and flame retardance; good mechanical performance and electric performance are realized; the insulation materialis applicable to various kinds of electric equipment.

Description

technical field [0001] The invention belongs to the technical field of insulating materials, and in particular relates to a method for preparing insulating materials used in electric equipment. Background technique [0002] In recent years, my country's electric power industry has developed rapidly, the operating voltage level of the grid system has been continuously improved, and the network scale has gradually expanded. The ultra-high or ultra-high voltage transmission network is the backbone and core of the smart grid that the State Grid is building. Significantly improve the transmission capacity of my country's power grid and reduce long-distance power transmission losses, but higher voltage levels and DC transmission pose a major challenge to the safety and reliability of insulating materials widely used in electrical equipment. High-performance insulating materials are components of high-voltage, The technical core and key of UHV power transmission and transformation eq...

AI Technical Summary

Problems solved by technology

[0002] In recent years, my country's electric power industry has developed rapidly, the operating voltage level of the grid system has been continuously improved, and the network scale has gradually expanded. The ultra-high or ultra-high voltage transmission network is the backbone and core of the smart grid that the State Grid is building. Significantly improve the transmission capacity of my country's power grid and reduce long-distance power transmission losses, but higher voltage levels and DC transmission pose a major challenge to the safety and reliability of insulating materials widely used in electrical equipment. High-performance insulating materials are components of high-voltage, The technical core and key of UHV power transmission and transformation equipment and network, the level and stability of its electrical performance are directly related to the voltage level and safety of the entire power transmission network. Therefore, the development of high-performance insulating materials is crucial to the construction of safe, reliable, stable and efficient DC ultra-high voltage transmission and transformation network is of great significance to improve the power transmission level of our country and save resources. The existing insulation materials for power cables have poor corrosion resistance and high heat resistance, which affects the service life of power cables.