Ceramic coating and preparation method thereof and method for preventing cracking of ceramic coating

Abstract

The invention relates to a ceramic coating and a preparation method thereof, and a method for preventing cracking of the ceramic coating. The invention provides the ceramic coating, which comprises the following components: a component A which consists of a metal oxide sol, a coloring pigment, a lamellar pigment, an oriented auxiliary agent and water, wherein the grain diameter of the lamellar pigment is between 1 and 80mum, while the tablet diameter ratio thereof is between 5 and 100; and a component B which is prepared by mixing at least two alkoxy silanes with different hydrolysis rates, wherein the weight ratio of the component A to the component B is 2-3:1-2, and the solid content of the component A is between 20 and 45 by weight percent. The invention also provides the preparation method of the ceramic coating, and the method for preventing cracking of the ceramic coating.

Description

technical field

[0001] The invention belongs to the field of chemical coatings, and relates to a novel ceramic coating, a preparation method thereof, and a method for preventing ceramic coating film from cracking. Specifically, the present invention relates to an inorganic ceramic coating film prepared by a sol-gel method, the coating film is a cured mixture consisting of a sol (A component) containing flake pigments, two or more alkoxysilanes After mixing, the agent (B component) is hydrolyzed and matured to form a gel solution with a certain viscosity, which is applied to the sandblasted metal substrate by spraying, and then the coating film is hardened at high temperature to form an improved cracking. Thick ceramic coating film. The ceramic coating film can be used for the decoration of aluminum curtain walls, the anticorrosion of metal materials, or the coating for the purpose of improving the non-stickiness, wear resistance and thermal-oxidative aging resistance of metal...

Images