Paint knowledge | difference between primer and topcoat

Core tip: when decorating and buying wall paint at home, we will find that many of the current wall paint can be divided into primer and finish paint The primer is used in the layer contacting with the wall, and the finish paint is the surface layer You may know this simple distinction, but the price difference between primer and finish paint is not small What's the difference between the two in the role? Let's take you to know Function of primer: primer is the first layer of paint system, which is used to improve the adhesion, fullness, alkali resistance and anticorrosion of finish paint Meanwhile, it can ensure the uniform absorption of finish paint and make the paint system play the best effect No matter how good the finish is 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: when decorating and buying wall paint at home, we are building materials The shop will find that many of the current wall paints are divided into primer and finishing coat The primer is used in the layer contacting with the wall, and the finishing coat is the surface layer You may know this simple distinction, but the price difference between primer and finishing coat is not small What's the difference between the two in the function? The following small part will show you Function of primer: primer is the first layer of paint system, which is used to improve the adhesion, fullness, alkali resistance and anticorrosion of finish paint Meanwhile, it can ensure the uniform absorption of finish paint and make the paint system play the best effect No matter how good the topcoat is, primer should be applied first to improve adhesion, corrosion resistance and alkali resistance Function of finish paint: finish paint is the final coating of painting, and it is the last layer applied in the decoration of building wall The overall effect presented after decoration is reflected by this layer The top coat has a high requirement for materials, such as good chroma and brightness The difference between the top coat and the primer: 1 The composition is different: the primer consists of four parts: resin, filler, solvent and auxiliary agent; the difference between the top coat and the primer is mainly that the filler of the former is little or no 2 Different functions: the primer is the first layer of the paint system, which is used to fill the paint surface, support the top coat, provide fullness, reduce cost, and help to save energy; the top coat is the final coat of painting, which is the last coat applied in the decoration of the building wall, so as to increase the number of coats of the top coat and the thickness of the top coat to increase the film thickness The thickness of the coating is mainly provided by the primer, while the finishing coat is mainly used for decoration and protection How to use primer and topcoat? Primer and topcoat are latex paint, which are generally used together, with different functions When brushing the wall, the primer can be applied after the putty is completely dry Generally, the primer is applied twice and the top coat is applied three times Each time, the first coat is completely dry and then the next coat is applied When brushing the primer, the wall has a large amount of paint Add a little more water to the primer to ensure that it can be brushed evenly When painting the top coat, do not add too much water, which will affect the thickness, feel and hardness of the paint film The last coat can be diluted properly Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,