The third step in the treatment of water-based paint coated substrates is sealing. The role of the water-based putty is to make the surface of the substrate such as wood not very regular and smooth and minor defects and defects, such as pores, fine cracks, pits, joints and concrete, to reduce the surface roughness and increase the flatness.The requirements for water-based putty are good adhesion and filling, easy sanding, good transparency, and no influence on the coating of the upper layer paint.Water-based putty is mostly one-component. The putty seals the micropores on the surface of the wood to not only increase the fullness of the paint film, but also reduce the bubbles generated during the coating process.This is because the paint liquid will seal the air in the micropores during painting. The slight increase in the ambient temperature during the drying process causes the bubbles to expand, which causes the paint surface to form obvious bubbles. This phenomenon is in the waterborne wood paint application. It is very common.Putty is suitable for thick film coating and paint application. For open painting, that is, the effect of painting wood grain and micropores is required, the putty backing shall not be used. Stir the putty before use.The putty can be applied by brushing or scraping, and the brushing method can be used to adapt to various shapes of the surface. Depending on the surface roughness of the wood, you can brush 1 to 3 putty.The surface of the uneven surface can also be multi-brushed. Under normal circumstances, it can be brushed two times, each interval is at least 0.5h (the second one is dried after the previous one). Do not use excessive force on sanding. Simply polish it to the unevenness and apply a putty.After the putty is finished, put it for at least 2 hours, smooth it with sandpaper (a little better sanding when it is aired), it is best to use 1000# sandpaper water mill to smooth it.However, in the case where water may cause warping, deformation, or opening of wood, water grinding shall not be performed. Rinse the water after grinding, dry it, and dry it before proceeding to the next step.Most water-based putty has a low solid content and is difficult to fill large gaps and pits on wood. It should be treated with high solids putty or oily putty. Generally, water-based paint can also be used for the coating of wood treated with oily putty. It should be noted that the oily putty must be fully dried. If the water-based paint is not fully dried before it is applied, bubbles will be generated and the film may be attached. bad. For doubtful oily putty, it must be tested first, and no problem can be applied to large-scale construction. Sinograce chemical industry co., LTD. Specializes in producing waterborne coatings, waterborne wood lacquer, 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

As the saying goes, three-point paint, seven-point painting. For water-based coatings, especially for water-based wood coating in the home improvement market, the level of coating technology has a direct impact on product use. In order to let everyone better master the water-based paint technology, we specially launched the water-based paint coating process series this week. The substrate treatment includes three steps: polishing, deburring and sealing. 1.Polishing The general wood surface to be painted should be ground first with 200# sandpaper and then polished with 600# sandpaper to make it smooth and smooth. The fine wood workpiece can be directly polished with 600# sandpaper. Fine sanding will make the wood grain tight and reduce the graininess of the grain. 2.Deburring After the wood is flooded, the water penetrates into the micro-gap between the wood fiber tube and the wood grain, causing it to expand and enlarge, highlighting the surface of the wood, and cannot be restored after drying.Therefore, after the water-based paint is applied to the wood, wood grain protrusions, granules, and burrs may occur. There are two ways to eliminate or reduce the occurrence of granulation and burrs after applying the first water-based paint. The surface to be coated is rubbed with a damp cloth that can be squeezed out of water to sufficiently wet the surface of the wood, and after drying, the formed burrs and granules are polished with fine sandpaper. Then apply a primer and dry it with a sandpaper of about 400#. The porous wood should be painted with two primers and then polished. At this time, the first primer should be diluted with 5% to 10% of water before use. The wood surface is closed with a wax-free shellac paint. This method is better than the wet method of water, in addition to preventing granulation and long burrs from being applied to the water-based paint, and also increasing the layering of the wood. However, due to the color of the shellac itself, the wood tends to have a light amber color.The shellac paint back cover is very useful for the old paint surface and the surface of wood that may have been contaminated by grease, mold release agent and silicone compound, which can prevent the construction of water-based paint from shrinkage, fisheye and other construction problems. If the painted surface is found during the painting process, especially when there are shrinkage holes and fish eyes after painting the old paint surface, the applied water-based paint should be wiped off, and then sealed with dewaxed rubber paint and then water-coated paint.Shellac paint is an alcohol solution of shellac, which can be applied by brushing or wiping. After the back cover, use sandpaper of 400# or more, and then wipe the cleaned surface with alcohol or a damp cloth to increase the adhesion of the topcoat. Please pay attention to the next step on the third step: the details of the water-based paint sealing Sinograce chemical industry co., LTD. Specializes...

What parameters of resin determine coating gloss? Question: What parameters of the resin determine the gloss of the film? Some people say that it is solid content, some people say it is OH value. So, what is the most important determinant of gloss? Answer: There are many parameters that determine the gloss of the paint film. The saturation of the resin: that is, its monomer structure, this index determines the absorption rate of light by the resin. For example, it is reflected that the monomer containing a benzene ring is lower in brightness than the saturated monomer. Polarity of the resin: The monomer structure also affects the polarity of the resin, which affects its surface tension and produces a surface phenomenon like fish orange peel, which affects gloss. Molecular Weight and Tg: These two indicators determine viscosity, ie, leveling. The better the leveling, the higher the gloss. Reactivity of the resin: The rapid occurrence of the crosslinking reaction is not conducive to leveling, thereby affecting the gloss. Particle size of the emulsion: If it is an emulsion resin, the particle size of the emulsion, the filming effect will also affect the gloss. sinograce chemical specializes in producing water-based acrylic resin, polyurethane resin and other special resins. For more information, please click here. visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone :+86 0551 63459511

In recent years, with the increasing awareness of environmental protection and the importance and legislation of governments in environmental protection, more and more anti-rust paints are turning to water-based.Many foreign customers have begun to demand waterborne anti-corrosive paints for domestic suppliers. After sinograce chemical successfully launched our water-based anti-corrosive paint|water-based anti-corrosion coating product series, we have received more and more inquiries about water-based anti-rust paint.Because waterborne anticorrosive paint is still a relatively new field in China, here are a few simple questions to consider when choosing a waterborne anticorrosive paint. The answers to these questions will determine the type and cost of waterborne paint. 1.Requirements for anti-corrosion performance of water-based rust remover: The most common anti-corrosion test index is the salt spray test result calculated by hour. When selecting water-based anti-rust paint, it should first clear whether there is a clear salt spray test in the material process requirements. Indicator, if any, how many hours the indicator is. The low requirements of the project may not require the results of the salt spray test, which can be as high as several thousand hours. 2.Water-based anti-rust paint requirements on the process conditions: the content of the process conditions can contain a number of contents. It mainly includes the composition of the coating, the coating method, the film thickness requirements, the drying conditions and the like. The composition of the coating means whether a two-component coating can be used. The coating method can include various processes such as spraying, rollers, and brushing. Whether there is heating and drying equipment at the construction site, and whether there is any restriction on the drying time, it is the content of the drying conditions. The difference in process will determine the performance requirements of the anti-corrosive paint. 3.Water-based anti-rust paint requirements: This problem is self-evident, but for water-based paints, the variables are larger than solvent-based paints. Due to the new stage of water-based anti-rust paint, the maturity of various technologies is different, and the cost gap is relatively large. The choice should be considered from the perspective of cost performance. 4. Waterborne anti-rust paint requirements for laws and regulations: As the main driving force of domestic waterborne anti-rust paint is still foreign customers, domestic manufacturers should choose the volatile organic content (VOC) contained in the water-based paint. The indicators such as monomer content are known, and relevant documents and certificates should be obtained from suppliers when necessary to meet the domestic regulatory requirements of foreign customers. Sinograce chemical specializes in the production of water-based anti-rust coatings for metal surfaces, water-based anti-corrosion coatings, please ...