Leveling agent can prevent powder coating from producing orange peel phenomenon

During construction, it is common to encounter issues such as orange peel and shrinkage. Actually, these phenomena are quite common, but how can we avoid them?

In practical work, active propellants or leveling agents are often used to improve the appearance of coatings and eliminate surface defects such as orange peel and shrinkage. A well functioning active propellant can reduce the melt viscosity and facilitate the wetting of the substrate before melting and pigment dispersion. The active leveling of the coating helps eliminate surface defects and facilitates air release. The relationship between the dosage and effect of activity modifiers should be investigated. Insufficient usage can lead to shrinkage and orange peel, while excessive usage can result in loss of gloss, fogging, and adhesion to the upper layer. General activity modifiers are included during pre mixing. They can be made into resin masterbatch and adsorbed in powder form on inorganic carriers. When the dosage of this additive in powder coating is 0.5-1.5%, it can also work well.

Promoting activities and leveling can reduce or prevent orange peel. The system utilizes lower melt viscosity, extended leveling time during solidification, and higher surface tension to facilitate forward movement and leveling. In the process of avoiding the orange peel phenomenon in powder coatings, it can be avoided by adding certain additives. But when adding, it is necessary to add scientifically according to the specific operation process.