Coating technology: basic knowledge of color matching basic paint and color paste

Core tips: first, the so-called basic paint, in short, is the white paint or varnish produced by the paint enterprise itself (pigment without covering power) Base paint is the carrier of color matching The control of base paint in the process of color matching will affect the accuracy, reproducibility, compatibility, economy and color gamut of color matching At the same time, the basic paint is the only part of the factory store integrated color matching system prepared by the paint enterprise itself, so different basic paint supports the use and effect of color matching system have significant differences Because of its formula Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: first, the so-called basic paint, in simple terms, is the paint enterprise's own production of white paint or varnish (does not contain the pigment covering power) Base paint is the carrier of color matching The control of base paint in the process of color matching will affect the accuracy, reproducibility, compatibility, economy and color gamut of color matching At the same time, the basic paint is the only part of the factory store integrated color matching system prepared by the paint enterprise itself, so different basic paint supports the use and effect of color matching system have significant differences Because of the different formulation and application range of the base paint, there are great differences In order to improve the matching of the factory's base paint in the use of the integrated color mixing system and give full play to the advantages of the system, it is necessary to adjust the base paint （1） The influence of batch color difference of base paint on the color matching system; if the product batch is different, there will be color difference between each batch of base paint These color differences will cause a great deviation in the color matching results Experiments show that the color difference of the base paint needs to be controlled below 0.3 due to the comprehensive analysis of the color matching results of different batches of base paint, which will have little impact on the final results of the color matching system （2） The influence of the compatibility of base paint and color paste on the final result of the color mixing system the compatibility of base paint and color paste affects the accuracy and economy of color mixing The compatibility can be seen from the research test and the method of mixing the color paste and base paint for a long time The so-called finger grind test is to take 100g of white paint, add 2-3g of color paste to be tested, mix it well, and then coat it on the surface of the coated object When the paint film is about to dry, grind the film with fingers For the surface part, after the paint film is completely dry, observe whether there is color difference between the areas that have been rubbed with fingers and those that have not been rubbed If the difference is large, the compatibility between the color paste and the tested paint is not good, and the paint transferred out by the color paste is easy to produce floating color phenomenon If the color is the same, there will be no floating phenomenon Experiments show that when the color difference of compatibility is less than 0.5, it has little effect on the accuracy and economy of final color matching results The method of standing after mixing the color paste and the base paint is to add the selected color paste into the base paint, stir and mix evenly, and stand for 24 hours to observe whether there is floating color (pigment layering) If there is pigment layering, it means that the compatibility between the color paste and the base paint is not good （3） The division of titanium dioxide content in base paint affects the color matching system The division of titanium dioxide content in base paint is mainly based on the requirements of color gamut and economy of color matching, the requirements of covering power of paint and the influence of the maximum addition of color paste on the performance of paint It is necessary to consider these factors comprehensively before we can make a reasonable division There are many ways to divide the titanium white content in the base paint that can meet the requirements of color gamut coverage and economy Now there are four common base paint systems with titanium white content and two base paint systems with titanium white content However, after comprehensive consideration of economy, color matching cost, inventory saving and other comprehensive factors as well as the market demand for color, we can determine how many kinds of basic paint system composed of titanium dioxide content can be divided according to the actual situation of the enterprise itself For example, the basic paint of a system can be divided into three kinds of titanium dioxide content, namely, the titanium dioxide content of a paint is 18% ~ 23%, the titanium dioxide content of B paint is 7% ~ 13%, and the titanium dioxide content of C paint is 0 （4） Performance index of base paint in order to obtain satisfactory final color matching results and make the influence of base paint on color matching results acceptable to customers, the requirements for performance index of base paint are listed in Table 1 Table 1 requirements for performance indexes of basic paint \ paint house focuses on news and information of coating, diatom mud, paint coating, coating process, fire retardant coating and coating, diatom mud, paint coating, coating process, decoration knowledge and decoration effect map of fire retardant coating,