Earthed anticorrosive conductive paint and preparation process thereof

Abstract

The invention discloses an earthed anticorrosive conductive paint and a preparation process thereof, relating to the field of earthed materials. The paint comprises the following components by mass percent: 10% to 15% of nanometer carbon black, 5% to 10% of colloidal graphite, 20% to 30% of a flexible epoxy resin, 0% to 10% of an organic silicone resin, 30% to 50% of a diluting solvent, 10% to 15% of a curing agent and 2% to 3% of a plasticizer; the sum of the mass percent of every component is 100%. The paint has high conductivity and good anticorrosive performance and closeness, which is favorable for anticorrosion, has flexibility, which is favorable for increase of a service life, and has high temperature resistance, good thermal stability and capacity of enduring impact of heavy current; the paint employs a two-component form and can improve cross-linking properties and mechanical properties of a resin after the paint is cured; the paint is applicable to a variety of earthing such as earthing for lightning protection, working earthing, protective earthing and the like having anticorrosive requirements.

Description

technical field [0001] The invention relates to the field of grounding materials, in particular to an anti-corrosion conductive coating for grounding and a preparation process thereof. Background technique [0002] At present, due to resource and economic reasons in our country, the material used for grounding grids is mainly ordinary carbon steel. The grounding bodies of such materials are buried underground and are easily oxidized and corroded. In order to prevent the corrosion of the grounding body, anti-corrosion measures must be taken, such as using relatively corrosion-resistant materials such as copper, or spraying coatings on the surface of carbon steel. In foreign countries, the whole copper grid is mostly used for grounding. Although the copper grounding body has anti-corrosion properties, but because the grounding body is buried underground in humid and various corrosive environments, the copper grounding body cannot avoid corrosion, but the speed of corrosion i...

AI Technical Summary

Problems solved by technology

[0004] 1. The cross-linking and mechanical properties of some coatings are poor after drying, and the corrosion resistance to soil corrosive media is not enough;

[0005] 2. At present, most domestic coatings use ordinary epoxy resin, and ordinary epoxy resin is brittle, and it is easy to form destructive stress when subjected to external force, resulting in cracking of the coating;

[0006] 3. The conductive filler used in the coating is not sufficiently closed to the matrix resin, which makes it easy for corrosive gas to penetrate into the grounding body and cause corrosion of the grounding body;

[0007] 4. The high temperature resistance of the coating is not enough, so that when the ground network is subjected to lightning current or short-circuit fault current and the temperature rises, the coating is easy to age and fail, and the anti-corrosion effect cannot be achieved