Moisture-proof, heat-conducting and heat-dissipating coating for reactor and preparation method thereof

Abstract

The invention provides a reactor surface coating with good moisture prevention, heat conduction and heat dissipation functions. The reactor surface coating comprises the following components in parts by weight: 100 parts of a rubber compound, 0.3 part of a platinum catalyst, 60 parts of aluminum oxide, 60 parts of magnesium oxide, 1.2 part of color paste and 50-60 parts of an organic solvent, wherein the rubber compound is formed by mixing silicon rubber, fumed silica, calcium carbonate and dimethicone; the organic solvent is a mixture of aromatic hydrocarbons, aliphatic hydrocarbons and alkenes. The invention further provides a preparation method of the reactor moisture-proof, heat-conducting and heat-dissipating coating. The reactor surface coating provided by the invention has the benefits that the waterproof and moisture-proof properties of a reactor are improved, so that the permeation of water vapor molecules into the inside of an equipment body is reduced and inhibited; the heat conduction and heat dissipation properties of the reactor are improved, so that when the equipment body locally heats or is in a normal operation, the generated heating phenomenon can timely dissipate heat through the coating, the normal temperature range of the equipment body is maintained, and the safe operation of equipment is ensured.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a moisture-proof, heat-conducting and heat-dissipating coating for a reactor and a preparation method thereof. Background technique [0002] Dry-type air-core reactor (hereinafter referred to as reactor) is an important equipment used in power system substations to limit short-circuit current, reactive power compensation and phase shifting. The reactor has been used outdoors for a long time, and its surface coating and surface material are prone to aging, moisture, brittleness or even falling off and peeling off. This is closely related to the defects in the manufacturing process of the reactor. In the manufacturing process of the reactor, the traditional manufacturing process is adopted. The aluminum wire layer of each circle is glued and wrapped by epoxy resin glass fiber. At the same time, each aluminum wire is also Wrapped mylar handle. Then winding, wrapping, curing and d...

AI Technical Summary

Problems solved by technology

Due to the direct bonding between the epoxy resin layer and the aluminum wire layer, as the service life increases, it is prone to aging and hardening, or even degumming and debonding. In this way, there will be a certain gap between the epoxy resin surface layer and the aluminum wire layer.

However, the surface layer of epoxy resin has not been specially treated, so there are certain deficiencies in waterproof and moisture-proof performance. Moisture and water vapor molecules can easily penetrate through the surface layer of epoxy resin into the inner layer of aluminum wires. Under the action of an electric field, the equipment is exposed to electricity, heat, In a humid environment, it is easy to cause the polyester film on the surface of the aluminum conductor to overheat and get wet and hydrolyzed to melt. As a result, the aluminum conductors are directly in contact with each other without the barrier of the polyester film, causing the inter-turn Short circuit, local heating of the equipment, and the surface layer of epoxy resin is heated and melted, which eventually leads to the burning of the equipment