ghd stijltang Industrial floor coatings in the cor

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Industrial floor coatings in the correct selection and application of additives

Prone to flocculation, aggregation and sedimentation, resulting in poor storage stability of paints, coatings can lead to serious use. When the dispersant in the coating system is excessive, the excess surface tension of dispersant caused a serious decline in paint, and to disperse system is unstable. Poor use of dispersion when the floor coatings, floor coating, the apparent effect is not good, low-gloss, easy to grow dim and floating color, leading to uneven color, etc., and to decrease the mechanical properties of the film. 3.2 defoamer in coatings formulations, there are many on the bubble stabilizing factor, and added a lot of variety of additives are surface active agent, a stabilizing effect on the bubble. Therefore, anti-foam and defoaming is paint cattle production and construction process can not be ignored. In the solvent-based paint water-based paint as a serious foaming problems, but it also needs sufficient attention. In floor coatings, the defoamer incorrectly can cause film shrinkage occurs, shrink, fish eyes, pinholes, orange peel, loss of light, shrinking change and blur and other defects seriously affect the performance and the performance of the coating . Solvent-based paints commonly used in the defoamer in the main types of low-level system does not dissolve in alcohol, higher fatty acids, metallic soaps, silicone resin, but their poor foaming performance, easy to fail or produce the film defects. Now commonly used in modified silicone resin,[link widoczny dla zalogowanych], or polyacrylate and polyolefin, such as efficient defoamer, for example: in the paint production process defoamer should be added to different functions, should be used in the grinding process defoamers defoaming function , added after the grinding function of breaking foam defoamer can be had in the construction of the roller to the proper use of anti-foaming. 3.3 leveling agent for floor coatings,[link widoczny dla zalogowanych], the coating leveling is' a very important performance index. If the paint is not good leveling, the uneven coating surface, obvious brush marks, the drying process is cratering, pinholes and other defects, damage to its protective and aesthetic properties. The epoxy floor paint coating, poly 34GuideofCoating paint Guide 3 / 2005 urethane coatings are more prone to such shortcomings. Leveling a great relationship with the system solvent, leveling is bad,[link widoczny dla zalogowanych], can be appropriately added to improve the high boiling point solvent, otherwise too many high boiling point a long time left in the film in question, severely reducing the mechanical strength of the film . To improve the leveling leveling agent is usually reduced by improving the coating and the substrate surface tension of the question, the coating and the substrate has a better wettability and coating the surface monolayer, providing uniform surface tension thereby improving the coating leveling performance. Leveling agent commonly used in three types: polymer, leveling agent,[link widoczny dla zalogowanych], silicone and fluorocarbon compounds category. EFKA, BYK, Germany Him, and Chinese companies have the appropriate superior performance products, such as EFKA3777 fluorocarbon modified polyacrylate is widely used in floor coatings. 3.4 rheological additives coating production, construction and film shear rate on the system requirements are different, usually require a certain thixotropic paint on the floor coatings, the rheological additives of the role is mainly to prevent the coating Shen except when in storage gathering pigments and to improve the brushing of. Commonly used rheological additives are organic Peng bentonite, fumed silica, castor oil derivatives, metal soap and so on. Fumed silica 3.5 functional additives can effectively reduce the film's gloss, matting agents are commonly used, but should be fully dispersed, and there is thickening effect of fumed silica. Anti-static conductive coatings need to add agents or antistatic agents,[link widoczny dla zalogowanych], conductive agents have a variety of metal powder, metal oxide, conductive carbon black, graphite, conductive mica and so on. They conductive film in a certain channel, the electrostatic surface guided walk. Anti-static additives are surfactants, adsorbed moisture in the air in the thin film conductive layer formed on the surface, constitutes a static leakage channels. The disadvantage is that when asked to increase with the use of, anti-static additives in paint less and less, the performance will be gradually reduced. Coating is a multiphase and multicomponent system, each component added to the coating system will affect the balance of other properties of the coating impact. At the same time, an additive used in the different conditions to achieve different performance. Such as silicone resin can be used as leveling agents, defoamers, or can be used as anti-skid agents. Metal soap can be used for rheological agents and driers. Some of the dispersing agent may be a great influence on the viscosity. Therefore, different systems for the appropriate choice of additives is the right technology an important component of paint. 4 Conclusion With the development of coatings science and technology, more and more variety of paint additives used to improve the quality of paint products to improve construction performance, or to give a special performance of coatings. But the coating system is a multiphase system, any component of the coating will affect the performance of stability and others. Paint work should be fully aware of their performance additives, the correct selection and adjustment of various additives, to achieve the best coating performance. Direct investment for the end user magazine
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