Phenomenon : Part of the water-based paint film from the primer uplift, which contains gas or liquid, showed uneven distribution. Cause 1.When the water-based paint is applied, the dry water-based paint film is exposed to rain. 2.Apply a water-based paint primer to the wet substrate; 3.Water based paint film is affected by acid - base and heat. Amelioration 1.Considering the gas phase conditions, the water-based paint film is completely dried and then re-constructed. 2.Substrate drying and surface treatment should be strictly implemented 3.Choose to accord with the conditions of use of good chemical resistance and good heat resistance of water paint varieties. For more water based paint details, please visit the official website of sinograce chemical. visit us sinograce chemical: https://www.sinogracechem.com Get a Quote Now :sales@sinogracechem.com Telephone :+86 0551 63459511

water-based resin | water-based industrial coating (a) water paint common problems Common problems with water-based lacquer wood paint: transparency, Color fullness of shade The complaint that often hears about paint of ability in water is paint of ability in water diapure is poor, cannot show the plump godliness of woodiness. In general, the transparency of water-based paint is determined by the following several factors: 1.The transparency of the polymer itself The best way to determine the transparency of the polymer itself is to apply the polymer to the heated black glass. The glass should be heated just above the minimum film forming temperature of the polymer so that  the polymer to cross-linked normally. In this way, the transparency of the polymer can be evaluated without the influence of other solvents and additives. 2.The use of solvents, additives and polymer mixtures will affect the transparency Silicone additives have been shown to affect the transparency of certain polymers. On the contrary, wax emulsions are beneficial for transparency. Some solvents take a long time to evaporate in the lamine ine. They leave a small gap in the lamine hydroxylamine hydroxylamine when they evaporate, dispersing light and increasing opacity. Other solvents at the beginning of the hydroxylamine hydroxylamine hydroxylamine hydroxylamine has been dried, affect the transparency. However, these solvents will gradually evaporate. In this process, the transparency of the film will increase. In the process of preparing a water-based paint, a thorough evaluation of the solvent should be made to determine which solvent will produce the system with the best overall transparency. A mixture of polymer with other polymer will because of particle size, reflective index, reduce the transparency and the incompatibility between the polymer to reduce the transparency of paint hydroxylamine. 3.A system with a high PH will cause the wood to appear "washed white" To the woodiness that does not dye, can add a few red or yellow to catch makings in the first varnish, restore the red, yellow degree of woodiness itself. For stained wood. The use of substrate wetting agent can improve the color fullness of wood.Choosing the right solvent system for the varnish is the key to determining whether the substrate needs a wetting leveling agent. Diacetone alcohol has some very interesting moistening properties. 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

water-based resin | water-based industrial coating (a) water paint common problems Water - based paint common problems: bubble - microbubble Microbubbles are tiny bubbles. If there are microbubbles in the varnish layer, this will reduce the "warmness" of the wood. Each microbubble appears to be a small curved lens that reflects and refracts light, summing up, resulting in a yellow and red color reduction on the surface of the wood without increasing transparency. Microbubbles are difficult to remove with antifoaming agents because the microbubbles have low buoyancy and cannot float to the surface. A foam that does not float to the surface cannot be broken by a commonly used defoaming agent. The elimination of microbubbles is absorbed by the surrounding liquid by the microbubbles. Microbubbles can be controlled in the following ways: 1.Control the solid content of the coating High solid content and high density of microbubbles. In a water-based coating, high solids content means less water. If there is less water, the air bubbles will absorb less water. High solid content means less drying time and less bubble dissipation. The difference between 2-3% solids results in a difference between having microbubbles and having no microbubbles. 2.Pay attention to the substrate you are painting A highly absorbent substrate takes water from the first layer of paint it is coated with. This will make the first layer of paint month than later coated with other paint hydroxylamine more easily into hydroxylamine. However, the shortened waxing time and the hydroscopicity of the lignin matrix will increase the probability of producing microbubbles on the hydrophobic substrate of the first layer of lamine hydroxylamine. Maple and birch have more frequent microbubble problems than oak and ash, which are denser. By reducing the solids content of the first coat, the density of the microbubbles is reduced.For example, if the solid content of the primer is reduced from 30% to 27%, this will reduce the number of microbubbles in the primer hydroxylamine. After the substrate surface is sealed with a first coat with a low solid content, subsequent coats may have a higher solid content. 3. Pay attention to the surfactants used in water-based paints Carefully use additives with high surfactants. A small amount of surfactant will cause more microbubbles. Acetylene diol surfactants such as defoamers [do not appear to cause microbubble production and can be used as a substitute for surfactants. 4.Pay attention to the solvents used in water-based paints Solvents can affect the concentration of microbubbles. In some cases, the use of buty1 cellosolve and buty1 carbitol increases the density of the microbubbles of the treated paint film. 5. Pay attention to the adhesion of water-based paint The adhesion of waterborne coatings determines the formation of initial microbubbles. In the process of coating, the larger the number of microbubbles is when the coating is still wet, the more m...

water-based resin | water-based industrial coating (a) water paint common problems Water-based paint common problem: bubble - big bubble Large bubbles are large, visible bubbles that are visible to the naked eye. Bulk bubbles generally occur during the production or application of water-based paints. Possible solutions: 1. Use appropriate defoaming agents In the process of producing water-based paint, when a large amount of air is stirred into the water-based paint,large bubbles may be generated. The addition of a highly effective defoamer to the stirred bottom material serves to remove these large bubbles.These highly effective defoamers are generally able to withstand the effects of cutting during agitation. Continue to work during the agitation process to eliminate foam. Moreover, the agitation process can reduce the chances of these highly effective defoamers eventually causing defects on the surface of the aqueous paint film. In general, highly effective defoamers are not suitable for use with any of the diluents, and defoamers for "quick-acting" defoamers should be used. Defoaming agent can also be "in the tank" defoaming. When choosing antifoaming agent, the balance between the durability of antifoaming agent and the reduction of defects on the surface of waterborne paint film should be considered. Non-silicone defoaming agents cause less side effects of surface defects, but their durability is also poor. In addition, some defoaming agents will cause surface defects of water-based paint film at the beginning,but if you wait 24 hours, let it fully react with the paint, they will cause defects of water-based paint film surface will be reduced. 2. Minimize the surfactant caused by foam. Anhui zhong 'en water-based paint raw material products have a very low tendency to produce large bubbles.One of the reasons for this is the low content of surfactant in the water based paint products of zhongen chemical industry. 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