Common problems with water-based paint: oil slick surface of paint Problem: The finished product has floating black spots or impurities on the surface. A lot of coating produce technical personnel to had encountered similar problem, there is in coating production process "small bubble" or small black dot cannot eliminate. Carefully examine these "little bubbles" ~ they are actually small black oil spots. Under a 20x magnifying glass, a small white powder substance can be seen in the center of the oil dot. Analysis: Small black oil is usually brought in by the filler oil, change a batch of raw materials, small black oil problem disappeared. The application effect of finished coating with floating black oil spots is not good. Because the black oil spots are incompatible with the coating system, the oil spots embedded in the film become defects after the film is formed.Because black small oil dot is mixture of oil, pink, participate in coating to become film, its composition and coating other component are different, produce stress in besmear film dry process, bring about the besmear film around black small oil dot to contain smalf crack. Solutions: 1. For the finished coating with floating black oil dots, the base material wetting agent and an appropriate amount of emulsifier can be appropriately added to make the small black oil dots without tank capacity, like pigment particles, enter the paint system after absorbing the wetting agent and no longer affect the appearance of the coating and film. 2. Strengthen the quality control of raw materials. 3 In the paint formula, try to introduce hydrophobic dispersant, can prevent the occurrence of this problem. Sinograce Chemical co., LTD produces water based paint ，chemical additives for water based paint, such as defoaming agent, thickening agent, leveling agent, wetting agent visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone :+86 0551 63459511

Case study of water-based paint: the quality of water-based paint is unstable Maintaining the stability of waterborne coatings is one of the keys to the success of waterborne coatings manufacturers. This is especially important for manufacturers of industrial waterborne paints. There are many reasons for the unstable quality of water based paint, such as water-based paint process,water-based paint formula and water-based paint raw materials. Matter Jiangsu some coating company waterborne wood matte white finish quality is good, a few furniture factory use the effect is very good. However, there are always problems with recent products. Formula and raw materials remain unchanged. The manufacturerasks hua jinsi what is the problem that causes quality problem of water paint product, and how to make quality of water paint product stable. Scene investigation The professional technicians of Sinograce Chemical visited the factory in person and found that the quality of the water-based wood lacquer made just now was very good, and the inspection was no problem. However, after storage for a period of time, the product return coarse, adhesion is not good, poor hiding power, quality is not stable. Poor customer performance. Analysis No problem with formula data and process. It is preliminarily concluded that the problem lies in the raw materials of waterborne wood lacquer. Sinograce Chemical technicians conducted a series of comparative tests in the laboratory for several possible problems and soon found abnormalities in titanium dioxide. Dispersants have little effect on its dispersion. Scraper fineness shows wet film shrinkage, gloss is not normal, and fineness and qualified. As a result, particle agglomeration will occur in the finished product after a long time, and coarse return will be easy to appear, leading to the decline of adhesion and poor covering power. After determining the problem of titanium dioxide, huazinsi's professional and technical personnel carried out the verification experiment again, and the result proved that the problem was caused by the quality difference of titanium dioxide. After several batches of titanium dioxide in the modulation of water-borne wood matte white finish, the results are very good: smooth film, various performance indicators are up to the requirements. Solution Sinograce chemical suggested that the quality of titanium dioxide batch problems, guide customers to replace titanium dioxide varieties. Sinograce Chemical advised customers to further use the newly selected titanium dioxide storage stability test. A week later, the customer feedback sample is very good, excellent quality. Coating manufacturer has sent the product to furniture factory, response is good. Highlights of the case Manufacturers should usually pay attention to the detection of water paint raw material supply and quality. In the water paint product quality problems, and formula and process have not changed, to solve the problem from the water ...

Water - based wood paint common problems: gloss wood paint uneven luster Phenomenon There is light coating on the wood surface, coating film gloss, some areas of low gloss Cause The wood fiber and pith ray in cork are loose with the growth of growth rings, the base material infiltrates excessively, the coating film increases the pigment volume concentration due to the decrease of the base material, and the luster decreases. Other parts due to dense, less infiltration of the base material, pigment volume concentration unchanged, luster unchanged. If it is a varnish coating,loose parts due to the infiltration of base resin, coating thickness decreased, luster decreased. The thickness of the coating film is not uniform,not uniform luster. Perfection The substrate is sealed with high degree of polymerization and high molecular weight. The base material of coating is polymer or polymer emulsion with large relative molecular weight.The base material is larger than the wood hole of wood, so it is not easy to be absorbed. Sinograce chemical Specializes in producing waterborne coatings, waterborne wood lacquer,topcoat ,primer etc. To learn more, please click here visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone :+86 0551 63459511

March 1, 2019,Anhui sinograce Chemical Co., Ltd held an event launching ceremony of “The Fourth Orange War”.