Coating classification: waterborne wood coating

Core tip: Product Introduction: There are six kinds of commonly used wood coatings, namely, nitrocellulose coating (NC), polyurethane coating (PU), unsaturated polyester coating (UPE), UV curing coating (UV), acid curing coating (AC) and water-based coating (W) Among them, the first three are named according to film-forming substances, UV and AC are named according to their curing conditions W coating is named as "water-based coating" because water is used as solvent or dilution medium, which is different from all "solvent based coating" using organic solvent 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 Coatings home news: Product Introduction: there are six kinds of commonly used wood coatings, namely, nitrocellulose coating (NC), polyurethane coating (PU), unsaturated polyester coating (UPE), UV curable coating (UV), acid curable coating (AC) and water-based coating (W) Among them, the first three are named according to film-forming substances, UV and AC are named according to their curing conditions W coating is named as "water-based coating" because water is used as solvent or dilution medium, which is different from all "solvent based coating" using organic solvent Water-based coating refers to the coating with water as the dispersion medium, which is generally divided into water emulsion type and water-soluble type, among which water-soluble type is widely used The main types of water emulsion are polyurethane dispersion (PUD), pure acrylic emulsion (PA), acrylic polyurethane modified emulsion (PUA), etc the packaging forms are divided into one component and two components At present, waterborne wood coatings are mainly composed of water-borne alkyd, acrylic emulsion or dispersion, waterborne polyurethane dispersions, waterborne acrylic polyurethane dispersions, two component waterborne polyurethane dispersions, etc The water-based coating has the advantages of convenient mixing, long application period, easy repair, basic safety and non-toxic, and good flexibility and adhesion of the film Especially with the limitation of VOC by national environmental protection regulations and the enhancement of people's awareness of environmental protection and health, solvent based coatings are facing unprecedented challenges, and water-based coatings are getting more and more attention Of course, the solid content of the water-based coating is low, so it is impossible to obtain the coating with high thickness at one time Compared with the traditional NC and Pu, the film has some differences in solvent resistance, drug resistance, heat resistance, and film hardness level hand feeling, and the unit price of the coating is also high But w, like UPE, UV, etc., will be the main development direction of Chinese coatings The film-forming mechanism of water-based coatings is consistent with that of solvent-based coatings in principle, which is closely related to the resin system of the binder selected by the coatings There are also volatilization drying, cross-linking curing, heating curing, UV curing and so on However, due to the existence of special solvent "water" in water-based coatings, the curing mechanism becomes more complex For example, in the film-forming process of water-soluble two-component polyurethane coating, it includes volatilization of volatile matter (solvent, water), CO condensation of polyol and polyisocyanate particles, reaction of polyisocyanate and water, reaction of polyol and polyisocyanate, etc., which will accompany the whole process of coating 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,