Leveling agent

The English professional name of leveling agent is Leveling agent, which is a commonly used coating additive, which can promote the coating to form a smooth, smooth and uniform coating film during the drying film formation process.
Leveling agents are a class of substances that can effectively reduce the surface tension of the coating liquid and improve its leveling and uniformity. It can improve the permeability of the coating liquid, reduce the possibility of spots and scars during brushing, increase coverage, and make the film formation uniform and natural. Mainly surfactants, organic solvents, etc. There are many types of leveling agents, and different types of leveling agents are used in different coatings. High-boiling solvents or butyl cellulose can be used in the solvent-based finishing agent. In water-based coating agents, surfactants or polyacrylic acid, carboxymethyl cellulose, etc. are used.

Leveling agents fall into two broad categories.

One is by adjusting the viscosity of the paint film and the leveling time. Most of these leveling agents are high-boiling organic solvents or their mixtures, such as isophorone, diacetone alcohol, Solvesso150, etc .;

The other is by adjusting the surface properties of the paint film. Generally speaking, the leveling agents generally refer to this type of leveling agent. This type of leveling agent migrates to the surface of the paint film through limited compatibility, affecting surface properties such as the interfacial tension of the paint film, so that the paint film achieves good leveling. According to different chemical structures, there are three main types of leveling agents: acrylics, silicones and fluorocarbons.

Tomorrow we will push you for a certain formula system, how to choose the right leveling agent variety according to the nature of the formula and the performance expected from the leveling agent, please continue to pay attention to us!