Paint knowledge | how to carefully select polyurethane waterproof coating in home decoration

Core tip: polyurethane waterproof coating is a one-component polyurethane waterproof coating which is made from isocyanate, polyether and other prepolymer containing isocyanate group by addition polymerization, with catalyst, anhydrous assistant, anhydrous filler, solvent, etc and processed by mixing and other processes At present, there are a variety of waterproof materials on the market, including domestic, imported and joint venture; there are high-grade, medium-grade and low-grade The common waterproof materials for home decoration are petroleum asphalt polyurethane waterproof coating, environmental protection polyurethane waterproof coating and polymer cement waterproof coating Polyurethane waterproof coating has been widely used in waterproof engineering because of its excellent physical and chemical properties among 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 waterproof coating is a one-component polyurethane waterproof coating material, which is made of isocyanate, polyether and other prepolymer containing isocyanate group through addition polymerization reaction, with catalyst, anhydrous auxiliary agent, anhydrous filler, solvent, etc processed by mixing and other processes At present, there are a variety of waterproof materials on the market, including domestic, imported and joint venture; there are high-grade, medium-grade and low-grade The common waterproof materials for home decoration are petroleum asphalt polyurethane waterproof coating, environmental protection polyurethane waterproof coating and polymer cement waterproof coating Polyurethane waterproof coating has been widely used in waterproof engineering because of its excellent physical and chemical properties Among them, tar polyurethane is the most widely used But with the development of society and the improvement of people's living standards, people begin to pay more attention to environmental protection and their own health There are a lot of aliphatic and aromatic compounds in coal tar, which have strong irritant odor Anthracene and naphthalene are harmful to human body People pay more and more attention to the pollution of tar polyurethane to the environment In 1997, Beijing Municipal Commission of construction proposed to develop environmental friendly polyurethane waterproof coating for production enterprises; at the end of 1998, it issued "on limiting and eliminating tar polyurethane waterproof coating" Beijing Municipal Construction Commission also encouraged the development and recommendation of six environmentally friendly polyurethane waterproof coatings; (1) one component polyurethane waterproof coating; (2) color polyurethane waterproof coating; (3) inorganic filler polyurethane waterproof coating; (4) water curing polyurethane waterproof coating; (5) petroleum asphalt based polyurethane waterproof coating; (6) petroleum resin based polyurethane waterproof coating; The first four kinds are not widely used in the market due to their high cost The latter two kinds have become the development direction of enterprises and have been applied in the market Now it is advocated to promote the non tar polyurethane waterproof coating, mainly based on the environmental protection requirements, the difference between tar and non tar polyurethane waterproof coating 1 Smell tar type: there is a serious irritant smell, and the film has a bad smell; non tar type: only slight smell or tasteless, and the film has no obvious smell 2 Coating combustion tar type: it has an irritant smell, produces thick black smoke and contains black floccules, and burns rapidly; non tar type: it has a loose smell or slight smell, produces a small amount of black smoke, burns slowly, and does not burn away from the fire source 3 Tar type of mixing method: the viscosity increases at the initial stage of mixing, i.e there is thickening phenomenon during mixing; non tar type: the viscosity is basically unchanged without thickening phenomenon during mixing The above three methods can be used to judge qualitatively the tar type and non tar type polyurethane waterproof coating, so as to prevent the tar type polyurethane coating from passing off the non tar type into the market The move among force and soft and waterproof is the property of polymer waterproofing coating (JS coating), which is made of acrylate polymer emulsion and cement and other additives It has the characteristics of "hardness and softness" It has the advantages of polymer coating, such as elongation, waterproof, and strength of hydraulic cement, and is easy to wet The coating uses water as dispersant to solve the environmental pollution caused by the use of tar, asphalt and other solvent based waterproof coatings and the harm to human health The home of coatings focuses on the decoration knowledge and effect map of coatings, diatom mud, paint coating, coating process, news information and coating materials of fireproof coatings, diatom mud, paint coating, coating process, fireproof coatings,