Pinholes and shrinkage cavities are common defects in the use of powder coatings. Their presence not only affects the appearance quality of the products, but also seriously affects the mechanical properties and protective properties of the products. Most of the corrosion of the materials to be prote

The metal surface painting process is an important metal corrosion protection method. The good paint coating protection layer is continuous and intact, and the combination is good, which can become a barrier to inhibit the intrusion of corrosive media. However, since corrosion is an irreversible spo