Paint knowledge | orange peel will be produced after spraying paint film is dry. What is the cause?

Core tip: A: after drying, the surface appearance of the coating presents many semicircular protrusions, like ripples like orange peel, which is called orange peel The phenomenon of orange peel is mostly caused by the poor leveling of the coating Poor leveling is caused by many factors such as coating itself and improper construction In order to prevent the formation of orange peel, attention should be paid in the construction: (1) the bottom layer should be treated well, and sealing the blank with sealing paint will be helpful to leveling In addition, the surface to be coated shall be fully polished and leveled to achieve a certain degree of smoothness, so as to ensure the consistency of coating wetting and the leveling effect of the coating (2) Guaranteed spray 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: A: after drying, the coating surface appearance presents many semicircular protrusions, like the ripples of orange peel, which is called orange peel The phenomenon of orange peel is mostly caused by the poor leveling of the coating Poor leveling is caused by many factors such as coating itself and improper construction In order to prevent the formation of orange peel, attention should be paid in the construction: (1) the bottom layer should be treated well, and sealing the blank with sealing paint will be helpful to leveling In addition, the surface to be coated shall be fully polished and leveled to achieve a certain degree of smoothness, so as to ensure the consistency of coating wetting and the leveling effect of the coating (2) Ensure the viscosity is not too high during spraying (3 (3) ensure that the surface can not be dried too fast after spraying, the ambient temperature can not be too high (generally around 200C), and the drying can not be carried out immediately after spraying (4) to ensure the leveling time after spraying, the wind speed of the drying room should not be too large, otherwise, the evaporation of solvent will be accelerated and the leveling time of the coating will be shortened (5) ensure the levelness after spraying, and ensure that each coating has a certain thickness, which can not be too thin Too thin or too thick will lead to orange peel phenomenon It is recommended to control the thickness of each coating at about 25-30 microns (6) the influence of other factors, such as the high content of low boiling point solvent in the coating, the solvent volatilization is too fast during the construction, and the film-forming material is too late to flow flat to form orange peel In this case, the method of adding more diluent or adding some high boiling point solvent can be used to prevent orange peel In addition, the paint itself does not mix well with the curing agent or diluent, and orange peel phenomenon will also occur Therefore, it is necessary to use the home of paint matching to focus on the news and information of paint, diatom mud, paint paint paint, paint process, fire retardant paint, and paint, diatom mud, paint, paint process, fire retardant paint decoration knowledge and decoration effect map,