The quality of surface treatment determines the life of heavy-duty anti-corrosion coatings

The combination of high-quality heavy-duty anti-corrosion coatings and strict surface treatment of metal substrates are two indispensable factors for obtaining excellent heavy-duty anti-corrosion coatings.

A large number of practices have proved that the cause of coating corrosion failure and its degree of influence are poor surface treatment, accounting for 40%; improper coating selection, accounting for 20%; insufficient coating thickness, accounting for 20%; improper coating preparation process, accounting for 20% 20%. It can be seen that the quality of the surface treatment is the first factor in determining the life of the heavy-duty anti-corrosion coating.

There are only three ways to improve the adhesion of heavy-duty anti-corrosion coatings to substrates:

1. Each component (mainly the molecular structure of the film-forming material) in the heavy-duty anti-corrosion coating formulation must have a good binding force with the substrate.

Xianghe brand XHDAC series heavy-duty anti-corrosion coating primers are mostly epoxy resin primers modified by chlorosulfonated polyethylene rubber, which makes the adhesion to the substrate extremely strong, and thus solves the problem better. this problem.

2. Strict surface treatment of the substrate. This is an important condition for obtaining high-quality heavy-duty coatings. The instructions of Xianghe brand XHDAC series heavy-duty anticorrosive coatings all clearly stipulate the surface treatment. In addition to the sandblasting and shot blasting treatment regulations, other treatment methods and treatment results are also clearly stipulated so that customers can pay attention to the construction.

3. Correct construction process operation. Many quality problems of heavy-duty coatings are related to this. In response to this situation, the instructions of Xianghe brand XHDAC series heavy-duty anticorrosive coatings all suggest dry film thickness, number of construction passes, construction conditions, and construction precautions. In addition, operating instructions are given in this manual for different equipment and corrosion conditions.