Water-borne long-acting electrostatic-conductive anticorrosive coating and preparation method thereof

Abstract

The invention relates to a water-borne long-acting electrostatic-conductive anticorrosive coating and a preparation method thereof. Single-walled carbon nanotubes and electrostatic-conductive mica powder are used as nano electrostatic-conductive fillers; the specific surface area of the single-walled carbon nanotubes is high; the single-walled carbon nanotubes are embedded into a material matrix to form a three-dimensional nanotube network, the structure of the material can be greatly strengthened, the color of a coating layer can be maintained, and the mechanical properties can be enhanced, so that the product has uniform electrostatic conductivity and high specific conductance, is not affected by humidity and has permanent electrostatic conductive properties. A scaly structure of the electrostatic-conductive mica powder is horizontally arrayed in the coating layer, and has good shielding property and excellent anti-penetration ability; the coating layer can isolate a corrosive mediumwell, and good anti-corrosion performance of the coating layer is achieved. The coating is superior to traditional electrostatic-conductive coatings in electrostatic conductivity and anti-corrosion performance, is safe and environmentally friendly, conforms to the green development direction, avoids the generation of toxic and harmful gases and VOCs in solvent-based coatings, is not flammable orexplosive, is simple to construct, can replace traditional solvent-based coatings and has broad application prospects.

Description

technical field [0001] The invention relates to a coating, in particular to a water-based long-acting static conductive anticorrosion coating and a preparation method thereof. Background technique [0002] Doped electrostatic conductive coatings use high molecular polymers as film-forming substances, add electrostatic conductive fillers, and ensure full contact between the conductive filler particles to form a conductive network chain that allows electrons to move freely, thereby realizing the conductive properties of the coating. Static function. Generally, electrostatic conductive coatings are divided into carbon-based, metal-based and metal-oxide-based. The price of carbon-based electrostatic conductive coatings is relatively low, but the conductive carbon black in its composition has more polar groups on the surface, which is difficult to disperse and easy to flocculate, so the static conductivity is relatively poor, and its dark color cannot be used to prepare light co...

AI Technical Summary

Problems solved by technology

The price of carbon-based electrostatic conductive coatings is relatively low, but the conductive carbon black in its composition has more polar groups on the surface, which is difficult to disperse and easy to flocculate, so the static conductivity is relatively poor, and its dark color cannot be used to prepare light colors. Coatings; metal-based static-conductive coatings have good static conductivity, but are easily oxidized, resulting in reduced static-conductive performance, and the cost is relatively high; metal oxide-based static-conductive coatings have relatively large resistance values ​​of metal oxides, so conductive Static effect is not good