Color steel plate paint and preparation method thereof

Abstract

The invention provides color steel plate paint and a preparation method thereof. The color steel plate paint is prepared from the following raw materials in parts by weight: epoxy resin, vinyl acetateresin, flexible vinyl ester resin, acrylic resin, primary amine, ethanol, coupling agents of organic titanate, calcium carbonate, talcum powder, titanium dioxide, nanometer titanium dioxide, nanometer silicon oxide, active diluents, acetone, normal propyl alcohol, ammonium hydroxide, dispersing agents and leveling agents, wherein calcium carbonate, the talcum powder, titanium dioxide, the nanometer titanium dioxide and the nanometer silicon oxide are subjected to coating treatment by an organic surface treatment agent. The obtained color steel plate paint has the advantages that the adhesionforce is strong; the comprehensive performance such as water resistance, corrosion resistance and pollution resistance is high; the efficient dispersion is realized; pin holes of the coating can be effectively filled; pores in the coating are obviously reduced; the paint can be used as the color steel plate paint and is also suitable for being used for color steel plate secondary coating.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a color steel coating and a preparation method thereof. Background technique [0002] Paint is coated on the surface of the object to be protected or decorated, and can form a continuous film firmly attached to the object to be coated, usually based on resin, or oil, or emulsion, with or without adding pigments, fillers, and adding corresponding Additives, viscous liquids prepared with organic solvents or water. The relatively authoritative book "Painting Technology" in the Chinese coatings industry defines it as follows: "Painting is a material that can be coated on the surface of an object by different construction techniques to form a firm adhesion, a certain strength, and a continuous coating. Solid film. The film formed in this way is commonly called a coating film, also known as a paint film or a coating." [0003] The organic coating of color steel plate has...

AI Technical Summary

Problems solved by technology

Due to the action of sulfur dioxide gas or salt in the air, the corrosion rate of the color steel plate is accelerated; in the rainy season, the coating is soaked by rain for a long time, or the temperature difference between day and night is too large to condense, the steel plate will be corroded faster, resulting in a decrease in service life

[0004] Regarding the problem of improving the corrosion resistance of color steel plate coatings, there have been many literatures that mention the composition and preparation methods of color steel plate coatings, mainly involving coating resin modification and formula improvement. Most of the technical improvements focus on improving the color steel plate. On the one hand, it is impossible to obtain a color steel plate with good comprehensive properties such as water resistance, corrosion resistance, and stain resistance. For example, the improved formula of the European patent EP531575 only improves the corrosion resistance of the color steel plate

Secondly, the existing technology does not take into account the influence of the aging paint on the adhesion and uniformity of the paint during the secondary coating, and cannot be used for the secondary coating of color steel plates. The application has limitations and will not bring significant economic benefits.