Paint knowledge the cause and prevention of wood paint disease: whitening

Core tip: the color of the paint film is whiter than the original, in the form of white mist （1） Reasons: 1 High humidity, high temperature and fast solvent volatilization at the construction site 2 The substrate has a high moisture content, or contains other chemical substances too heavy (the paint film becomes white after drying for a period of time), and the surface of the coated object is not cleaned by hand perspiration, wet towel, etc., which will also become white 3 The surface temperature of the coating is low, and the paint or diluent contains water 4 The humidity in the air is too high, which exceeds the dilution ratio of solvent to water Or in the drying process, due to the fast volatilization of the solvent, the temperature of the coating film drops, and the air temperature drops below zero degree, so that the surface of the coating becomes translucent Several ways of roller coating Recommended introduction: roller coating includes rubber roller coating, insert plate roller coating and ceramic rubber roller coating The following is a detailed introduction of these three ways of coating The function of roller rubber coating is to increase the friction derivative between the conveyor belt and the cylinder surface during transmission, so as to reduce the friction coefficient of the conveyor belt on the cylinder surface, reduce the mutual wear of the sliding machine of the conveyor belt on the cylinder surface, improve the traction force during operation, and extend the service life of the conveyor belt and the electric roller One, three, six, 8385-7180 (V) rubber rollers are covered with diamond rollers and flat rollers, generally pure rubber plates The rubber coating of the inserted plate roller is divided into tile shell type roller and Paint Home News: paint film color than the original white, white fog （1） Reasons: 1 High humidity, high temperature and fast solvent volatilization at the construction site 2 The substrate has a high moisture content, or contains other chemical substances too heavy (the paint film becomes white after drying for a period of time), and the surface of the coated object is not cleaned by hand perspiration, wet towel, etc., which will also become white 3 The surface temperature of the coating is low, and the paint or diluent contains water 4 The humidity in the air is too high, which exceeds the dilution ratio of solvent to water Or in the drying process, due to the fast volatilization of solvent, the temperature of coating film drops, and the air temperature drops below zero degree, so that the coating surface becomes a translucent paint film When the water finally evaporates, the coating becomes porous and Matt 5 During construction, due to the failure of the oil-water separator for purifying compressed air, the water enters the paint and causes the paint film to turn white （2） Preventive measures: 1 Reduce the indoor humidity, avoid painting under high humidity, or add 3-10% white water to the diluent to mix evenly before construction; 2 Select the slow drying diluent; 3 Operate after the water of the coating is completely volatilized; 4 The water content of the base material shall not exceed 12%; 5 If the humidity is particularly high, the construction shall be stopped if the white water is still added 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,