Coating classification: corrosion sensitive paint

Core tip: corrosion is the main cause of metal damage Coating on its surface can prolong its service life, but moisture can penetrate into the paint and metal interface in various ways to damage the metal Traditional methods of corrosion detection include visual inspection, adhesion test, etc., followed by expensive and harmful paint removal and repainting One of the new technologies to control paint degradation is the intelligent paint that can observe and indicate the early corrosion conditions Its application fields include aircraft, hull, highway structures, pipelines, oil tanks, offshore drilling platforms, etc there are two basic types: discoloration and fluorescence: 1) Chromotropic type Water and air and metal generation Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Paint Home News: corrosion is the main cause of metal damage, painting on its surface can extend its service life, but moisture can penetrate into the paint and metal interface in various ways to damage the metal Traditional methods of corrosion detection include visual inspection, adhesion test, etc., followed by expensive and harmful paint removal and repainting One of the new technologies to control paint degradation is the intelligent paint that can observe and indicate the early corrosion conditions Its application fields include aircraft, hull, highway structures, pipelines, oil tanks, offshore drilling platforms, etc there are two basic types of color change and fluorescence: 1) color change type When water and air react with metal in electrochemical corrosion, the resulting ions raise the pH value The paint system composed of transparent acrylic acid containing discolored compounds will change color with the change of pH value in the corrosion process If the compound phenolphthalein is higher than the set pH value, it will change from colorless to red The experiment shows that the paint can detect pockmarks with a depth less than 15 μ M 2) With the occurrence of oxidation, these compounds in the coating complexed with metal cations, which changed the coating from non fluorescence state to fluorescence state When the air infiltrated into the primer on the aluminum alloy to cause oxidation corrosion, such compounds as fluorescein, Schiff base, oxime and hydroxyquinoline in the coating can emit fluorescence when encountering aluminum ions The corrosion degree of the base alloy can be detected by scanning the surface of large alloy with ultraviolet lamp and measuring the intensity of the light emitted with spectrometer Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,