Coating knowledge: diluent

Core tip: solvent or water is an important component of liquid architectural coatings After the coating is applied to the base course, the solvent or water evaporates, and the coating gradually dries and hardens to form a uniform and continuous coating In the preparation of solvent based synthetic resin coating, the solubility of organic solvent to the base resin should be considered first, and the adaptability of volatile, flammable and toxic organic solvent to the preparation of coating should also be considered The solvent is a volatile liquid, and the drying of the film depends on the volatilization of the solvent The rate of solvent volatilization has a great influence on the drying speed, appearance and quality of the film If the solvent volatilization rate 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: solvent or water is an important component of liquid architectural coatings After the coating is applied to the base course, the solvent or water evaporates, and the coating gradually dries and hardens to form a uniform and continuous coating In the preparation of solvent based synthetic resin coating, the solubility of organic solvent to the base resin should be considered first, and the adaptability of volatile, flammable and toxic organic solvent to the preparation of coating should also be considered The solvent is a volatile liquid, and the drying of the film depends on the volatilization of the solvent The rate of solvent volatilization has a great influence on the drying speed, appearance and quality of the film If the solvent volatilization rate is too small, the film drying is slow, which not only affects the quality and construction progress of the film, but also the film is easy to be washed away by rain or stained before drying and hardening If the evaporation rate of the solvent is too high, the coating will dry quickly, which will affect the leveling, gloss and other indicators of the coating, and the surface will produce the phenomenon of skinning and whitening This is because the solvent volatilizes too fast, which makes the film cool quickly, and condensation appears on the film that has not been dried yet Therefore, according to the different construction methods of the coating, the solvent or mixed solvent with suitable volatilization speed should be selected to improve the performance of the coating Water is the most widely used solvent in architectural coatings It has the characteristics of non-toxic, tasteless, non combustible, wide range of sources, low price and so on It is widely used in water-soluble coating and water emulsion coating Other solvents often used in architectural coatings are: alcohols (ethanol, butanol, etc.), ethers (propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol butyl ether, etc.), esters (ethyl acetate, butyl acetate, etc.), ketones (acetone, methyl ethyl ketone, cyclohexanone, etc.), benzene (benzene, toluene, xylene, etc.) In addition, some functional coatings also need to use additives with special functions, such as flame retardant additives for fire retardant coatings, foaming agents for intumescent fire retardant coatings, etc., which are not introduced one by one 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,