Application of water-based anti-cratering additives

Application of water-based anti-cratering additives

Waterborne anti-cratering additive is a chemical additive specially designed to solve the problem of cratering in waterborne coating systems. It can improve the wettability and levelling of coatings and prevent the formation of shrinkage holes, pinholes and other defects during the drying process of coatings, so as to improve the overall quality and appearance of the coating. The following is a detailed analysis of the application of water-based anti-cratering additives:

1. Application Areas

Water-based anti-cratering additives are widely used in various water-based coating systems, including but not limited to:

Water-based wood paint: When painting wood products, the use of water-based anti-cratering additives can effectively prevent the shrinkage phenomenon caused by substrate contamination or paint compatibility problems.

Water-based industrial paint: In the field of industrial painting, water-based anti-cratering additives can ensure the even spreading and good adhesion of paint on metal, plastic and other substrates.

Water-based glass paint: When coating glass surfaces, the use of water-based anti-cratering additives can improve the wettability and levelling of coatings, avoiding the production of defects such as shrinkage and orange peel.

Water-based ink: In the printing field, water-based anti-cratering additives can help improve the printing effect of ink and the quality of finished products.

2, the main function

Improvement of wettability: water-based anti-cratering additives can significantly reduce the surface tension of the coating, improve the wetting ability of the coating on the substrate, thus preventing the phenomenon of shrinkage due to the contamination of the substrate or the compatibility of the coating.

Enhancement of levelling: By improving the flow of the coating, water-based anti-cratering additives can make the coating form a more even and smooth coating on the substrate, avoiding defects such as pinholes and orange peel.

Preventing shrinkage: The main function of water-based anti-cratering additives is to prevent the formation of shrinkage holes in the coating during the drying process, thus improving the overall quality and appearance of the coating.

Improve compatibility: Some water-based anti-crater additives are also compatible with other components in the coating system, improving the stability and performance of the coating.

3.Usage

Addition amount: The addition amount of water-based anti-cratering additives usually varies according to the coating system and substrate. Generally speaking, the additive amount is between 0.1% and 2% of the total coating amount.

Timing of addition: Waterborne anti-crater additives can be added at any stage of coating production, but in order to ensure its full dispersion and function, it is best to add it at the stage of coating mixing.

Stirring: After adding waterborne anti-cratering additives, the paint needs to be stirred well to ensure that the additives can be evenly dispersed in the paint.

4. Precautions

Compatibility test: Before using water-based anti-crater additives, it is recommended to carry out a compatibility test to ensure its compatibility with other components in the coating system.

Storage conditions: Water-based anti-cratering additives should be stored in a cool, dry and well-ventilated place, avoiding direct sunlight and high temperature.

Safe operation: In the process of use, the relevant safety operation regulations should be observed to avoid skin contact and inhalation. In case of inadvertent contact, flush immediately with plenty of water and seek medical assistance

In summary, water-based anti-cratering additives play an important role in improving the coating effect of water-based coatings and the quality of finished products. Through the reasonable selection and use of waterborne anti-cratering additives, the wettability, levelling and compatibility of coatings can be significantly improved, and defects such as shrinkage can be prevented, so as to meet various coating requirements.