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The adhesion performance of the organic coating is always controlled as the most important performance of the protective coating system.
In this process, we expect that the formulated coating material can provide good adhesion, as well as the adhesion between the substrate or other coatings, and the cohesion of the coating material itself; at the same time, the formulated coating material can pass appropriate The application method to control a certain degree of adhesion strength; finally, in all cases, suitable methods can be applied to detect the designed bond failure mechanism and failure state
The type of adhesion depends on the characteristics of the substrate and the coating coating online coatingol.
1 mechanical attachment
The relatively important thing in construction is mechanical attachment
2 polar attachment
Polar adhesion depends on the attraction of the resin in the coating to the substrate
3 Chemical attachment
Chemical adhesion is actually the chemical reaction between the coating and the metal substrate.
The epoxy group has a great chemical affinity, coupled with the polar attraction of the hydroxyl group, so that the epoxy coating has a unique bonding ability
According to the requirements of "ISO 2409-2007 Paints and Varnishes-Cross-cut test", through the cross-cut test of the coating, the results are divided into the following 6 levels: For general use, the first three levels are satisfactory and used When a qualified or unqualified assessment is required
