General knowledge of coating: Analysis on the characteristics of polyurethane anticorrosive paint

Core tips: features of polyurethane anticorrosive paint: Polyurethane anticorrosive paint has various varieties and can be used for various purposes Two component, room temperature curing hydroxy polyurethane coating is the main type of polyurethane anticorrosive paint It has outstanding weather resistance and oil resistance It has adjustable excellent comprehensive performance, which can form rigid and elastic coating There are also excellent toughness, wear resistance and low temperature curing The compatibility of the formula is wide, which can be compounded with various resins and additives to improve the performance, and is also conducive to the preparation of various environmental friendly coatings Due to the 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 Home of coatings: polyurethane anticorrosive paint features: polyurethane anticorrosive paint varieties, can be suitable for a variety of uses Two component, room temperature curing hydroxy polyurethane coating is the main type of polyurethane anticorrosive paint It has outstanding weather resistance and oil resistance It has adjustable excellent comprehensive performance, which can form rigid and elastic coating There are also excellent toughness, wear resistance and low temperature curing The compatibility of the formula is wide, which can be compounded with various resins and additives to improve the performance, and is also conducive to the preparation of various environmental friendly coatings Due to the volatility and reactivity of isocyanate group (- NCO) components in the coating, full attention should be paid to the processing, transportation, storage and construction of the coating Polyurethane is a kind of polymer with carbamate bond in its molecular structure The carbamate bond is formed by the reaction of isocyanate group and hydroxyl group Therefore, the monomers of polyurethane resin are polyisocyanates and polyhydroxy compounds There are two kinds of polyisocyanates: aromatic and aliphatic Because the former is cheaper and has higher reaction activity at room temperature, the former is mostly used in anticorrosive paint, but the latter is rarely used The latter is only used in outdoor finishing paint with decorative requirements In order to improve storage, construction and coating film performance, polyisocyanate monomer is often made into polyurethane prepolymer or additive containing free isocyanate group In addition to the polyisocyanate which can be cured by polyhydroxy compounds, other compounds containing active hydrogen can react with it Among them, water and amines are important, because they can cure at room temperature or even at low temperature, but at this time, the reaction forms a substituted urea bond Polyurethane anticorrosive paint has good adaptability and comprehensive performance, and can adapt to complex and changeable working conditions Polyurethane anticorrosive paint has been paid attention to in recent years because of its long-term effect in many aspects It has been called the most important high-efficiency anticorrosive paint together with epoxy resin and chlorinated rubber 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,