Insufficient use of leveling agent can have the following effects on the coating:
1. Decreased leveling performance
The main function of leveling agents is to reduce the surface tension of coatings and improve their leveling properties. If the dosage is insufficient, defects such as orange peel, ripples, and shrinkage holes may appear on the surface of the coating. These defects not only affect the appearance of the coating, but may also lead to a decrease in the protective performance of the coating.
2. Insufficient wettability
Leveling agents can improve the wettability of coatings on substrates, enabling coatings to better adhere to the surface of substrates. When the dosage is insufficient, the coating may not be able to fully wet the substrate, resulting in a decrease in coating adhesion.
3. Uneven coating surface
Insufficient use of leveling agent may lead to uneven coating surface, resulting in construction marks such as brush marks and roller marks. This not only affects the appearance quality of the coating, but may also affect the durability and protective performance of the coating.
4. Decreased glossiness
Leveling agents can enhance glossiness by improving the flatness of coatings. When the dosage is insufficient, the coating surface may become uneven, resulting in a decrease in glossiness.
5. Increased construction difficulty
An appropriate amount of leveling agent can reduce the construction viscosity of the coating, prolong the drying time, and thus improve the construction performance. If the dosage is insufficient, the construction performance of the coating may deteriorate, increasing the difficulty of construction.
summarize
The dosage of leveling agent needs to be adjusted reasonably according to the coating system and construction requirements. Insufficient usage may lead to poor coating leveling, insufficient wetting, uneven surface, reduced glossiness, and increased construction difficulty. Therefore, in practical applications, it is recommended to determine the optimal addition amount through small-scale experiments to ensure coating performance and construction effectiveness.
