Problem：I have not done waterborne polyurethane, the waterborne paint is a rookie .I have never done water - based, water -based is a rookie，I wonder if waterborne polyurethane also needs curing agent? If you want to use it, what is the ratio?Because of the presence of water, is it possible to go back and consume the curing agent?And I want to use this to make the electroplated silver, is it ok? Response：Waterborne polyurethanes do not necessarily require a catalyst. In fact, waterborne polyurethanes are primarily designed for single component coatings.In other words, the resin itself has a high molecular weight .This is essentially different from solvent based polyurethane coatings. Good quality polyurethane gloss can reach over 90.In more demanding applications, it is necessary toadd small amounts of crosslinkers.However, most of these cross-linking agents are not isocyanates, and the crosslinking mechanism is different, and does not react with water. For the application of electroplating silver, please contact our company, we have protective products for electroplating field . Sinograce Chemical produces water based polyurethane emulsion products and related chemical additives, welcome to inquire, we will recommend suitable waterborne polyurethane products according to your production needs. visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone               :+86 0551 63459511

PH adjustment of water-based paint-Ask water character paint expert Question: If the pH value of the water-based paint is not weakly alkaline or the pH value is unstable, what effect will it have in actual use? Thank you! Response: The unstable pH of water-based paints has two main effects on water-based paints.One is that it affects the stability of the filler or paste in the resin because the pH of the system affects the surface chemistry of the particles and affects the dispersibility or degree of bonding of the particles. In severe cases, it will cause gel or bean curd.Second, it will affect the role of the system and the substrate.For example, for waterborne wood lacquers, some woods will exhibit different colors due to the pH of the coating. Alternatively, for aqueous anti-corrosive paints, the pH on the corrosive metal surface greatly affects the corrosion resistance of the water-resistant anti-rust paint . I hope our answer will help you. If you have more specific requirements, you can contact us directly. For more information on waterborne coatings, you can also visit Sinograce Chemical waterborne coatings knowledge base and recipes in our waterborne formula library. Or ask us directly through our question water paint staff . Sinograce chemical produces water based metal paint, water based metal protective paint, metal anti corrosive paint and metal anti rust agent, with good resistance to salt fog, weather resistance, antifouling, corrosion resistance and rust resistance, anti corrosion paint price is reasonable, welcome to inquire. visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone            :+86 0551 63459511

Oil pocket phenomenon in water-based paint Problem: To make furniture with transparent colors, in order to save the craft and achieve the purpose of simple construction. We added water-based Color Concentrate to the topcoat for spraying, and the resulting topcoat contained some oil pockets or other unacceptable "face problems." Reply: Aqueous color concentrates are generally made of metal complexes. If they contain more free polyvalent metal ions or the topcoat resin contains some functional groups with strong complexing force, it will cause the resin to coagulate and produce microscopic particles. This causes fish eyes or oil pockets. Solution In addition to the replacement of water-based resin or color essence, additives that enhance dispersion can be added. Sinograce Chemical produces water based wood lacquer, water-based furniture lacquer and polyurethane dispersion emulsion. We recommend professional water-based lacquer for you. visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone            :+86 0551 63459511

Water-based paint sticky sticky brush - Ask a water paint expert Problem:Water-based paint, when brushing, paint is easy to stick to the brush, so that the color is not loose. What is this, please? Answer:the reasons why water-based paint is sticky and sticky are as follows 1.High viscosity of water-based paint: if the viscosity of water-based paint is high, the paint will stick to the brush as you said.It is recommended to add water to the water-based paint to adjust its viscosity. 2.Water-based paint drying too fast: water-based paint drying too fast will lead to paint particles. It is recommended to add some additives such as polyethylene glycol and leveling agent to waterborne paint to reduce the tendency of brushing. 3.Water-based paint color particles coarse: if the color particles coarse, such as resulting in color filler mixture is not uniform, from the particles. 4. The brush is toothick: finally, if the brush is too thick, it will cause the phenomenon you described. A soft wool brush is recommended. Sinograce chemical thickener emulsion ,thickening agent is high quality, welcome to consult to us . visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone :+86 0551 63459511