Paint knowledge | how does moisture content of wood affect painting quality?

Core tip: A: the wood without drying contains a lot of water At low temperature and high humidity, the wood absorbs the water in the air and expands At high temperature and low humidity, the water in the wood gradually evaporates and contracts, but the shrinkage and expansion rate of the wood are different in all directions The longitudinal direction is the smallest, the radial direction is larger and the chord direction is the largest When the surrounding air state changes, the moisture content of wood also changes with it, causing the wood to expand or contract The moisture content of general wood should be controlled at 8-12% If the moisture content exceeds the controlled moisture content, the wood of the furniture will be wet, and the coating will dry slowly when finishing, which will reduce the adhesion of the paint film, 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: A: the wood without drying contains a lot of water At low temperature and high humidity, the wood absorbs the water in the air and expands At high temperature and low humidity, the water in the wood gradually evaporates outward and contracts, but the shrinkage and expansion rate of the wood in all directions are different The longitudinal direction is the smallest, the radial direction is larger and the chord direction is the largest When the surrounding air state changes, the moisture content of wood also changes with it, causing the wood to expand or contract The moisture content of general wood should be controlled at 8-12% If the moisture content exceeds the controlled moisture content, the wood of furniture will be wet When finishing, the coating will dry slowly, which will reduce the adhesion of the paint film and make the volatile paint white It will make the curing and drying paint, such as PU paint produce bubbles, pinholes and other paint film defects When the climate is dry, the moisture in the wood evaporates and shrinks, which is easy to produce cracks and damage the paint film surface Therefore, the wood for furniture must be dried and the moisture content should be controlled within the specified range In addition, the wood blank must be effectively sealed before being used as the primer For example, the use of Cr ps900 didebol can prevent the moisture and other substances in the wood from spreading out, which is conducive to preventing the wood from deformation, blistering of the paint film, pinholes and other phenomena It also helps to polish and remove wood wool after drying 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,