A kind of multifunctional sealing assembly and preparation method thereof

Abstract

The invention relates to the field of sealing assemblies, in particular to a multifunctional sealing assembly and a preparation method thereof. The invention discloses a multifunctional sealing assembly. The sealing assembly is composed of a sealing component and a curing component. The curing component is a curing agent; the sealing component is prepared from the following components comprising,by weight, 30 to 40 parts of mercapto-terminated liquid nitrile rubber, 20 to 50 parts of epoxy resin, 3 to 5 parts of a flame retardant, 3 to 8 parts of an antistatic agent, 3 to 8 parts of a plasticizer, 0.01 to 0.1 part of an anti-ultraviolet agent, 0.05 to 0.5 part of a dispersant, 0.06 to 0.16 part of diethylene glycol monobutyl ether and 0.03 to 0.16 part of 4-amino-3-methylphenol. The invention solves the problem of preventing or reducing the adverse effect of environmental conditions on the reliability of electrical products. The multifunctional sealing assembly disclosed by the invention has flame-retardant and antistatic properties, and is expected to replace traditional fireproof cement gum, inorganic plugging materials and the like with poorer properties.

Description

technical field [0001] The invention relates to the field of sealing components, in particular to a multifunctional sealing component and a preparation method thereof. Background technique [0002] When electrical equipment is damp, the first performance is that the insulation performance of the equipment is reduced, and the insulation aging is accelerated. According to the current dielectric theory, the increase of ambient humidity will increase the electrical conductivity, relative permittivity, and dielectric loss tangent of the dielectric, and reduce the breakdown field strength. It is worth noting that the destruction process of insulation is often brittle under the action of heat, cracked after vibration, and after moisture enters the crack, very low voltage will also cause discharge, resulting in breakdown of insulating materials. Secondly, with the increase of humidity, the oxidation and corrosion of bare metal conductors will generally be accelerated, especially in...

AI Technical Summary

Problems solved by technology

[0002] When electrical equipment is affected by damp, the first performance is that the insulation performance of the equipment is reduced, and the insulation aging is accelerated.

According to the current dielectric theory, the increase of ambient humidity will increase the electrical conductivity, relative permittivity, and dielectric loss tangent of the dielectric, and the breakdown field strength will decrease.

It is worth noting that the destruction process of insulation is often brittle under the action of heat, cracked after being subjected to vibration, and after moisture enters the crack, very low voltage will also cause discharge, resulting in breakdown of insulating materials

Secondly, with the increase of humidity, the oxidation and corrosion of exposed metal conductors will generally be accelerated, especially in the case of dust adhesion, which will increase the contact resistance of the conductor connection and cause local overheating

Therefore, if the electrical equipment in a humid environment for a long time does not adopt moisture-proof measures, its service life will be greatly reduced, causing leakage and short circuit, which will lead to serious electrical failures and accidents.

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