Coating knowledge: classification of liquid type of waterproof coating

Core tips: first, according to the classification of the liquid type of the coating, according to the liquid type of the coating, the waterproof coating can be divided into three types: solvent type, water emulsion type and reaction type 1 Solvent based waterproof coating in this kind of coating As the main film-forming material, polymer material dissolves in organic solvent and becomes solution Polymer materials exist in solution (coating) in molecular state This kind of coating has the following characteristics: through solvent volatilization, through molecular chain contact, overlapping and other processes of polymer materials, the coating is dry, thin and dense; the production process is simple, and the storage stability of the coating is good; it is inflammable, explosive, toxic, during production, storage and use Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Coating home news: first, according to the coating liquid type classification according to the coating liquid type, the waterproof coating can be divided into solvent type, water emulsion type and reaction type 1 Solvent based waterproof coating in this kind of coating As the main film-forming material, polymer material dissolves in organic solvent and becomes solution Polymer materials exist in solution (coating) in molecular state; this kind of coating has the following characteristics: through solvent volatilization, through the process of polymer molecular chain contact, overlapping and so on, the coating is dry quickly, the conjunctiva is thin and dense; the production process is simple, the coating storage stability is good; flammable, explosive, toxic, pay attention to safety in production, storage and use; Due to the fast volatilization of solvent, the environment is polluted during construction 2 water emulsion waterproof coating, which is used as the main membrane forming material, is stabilized by suspending (rather than dissolving) in tiny particles (rather than molecular state) This kind of coating has the following characteristics: through the evaporation of water, through the process of solid particles approaching, contacting, deformation and so on, conjunctive; the drying of coating is slow, the compactness of one-time film-forming is lower than that of solvent type coating, and it is generally not suitable to be constructed below 5 ℃; the storage period is generally not more than half a year; it can be constructed on a slightly wet base; it is non-toxic, non combustible, and safe for production, storage and transportation and use; It is easy to operate, does not pollute the environment, and has low production cost 3 Reactive waterproof coating in this kind of coating, as the main film-forming material, the polymer material exists in the form of prepolymer liquid, mostly in the form of two-component or single component, almost without solvent This kind of coating has the following characteristics: through the chemical reaction between the liquid polymer prepolymer and the corresponding substances, it becomes a solid (conjunctiva); it can form a thick film at one time, without shrinkage, and the film is dense; the two-component coating needs 1:2 accurate materials on site; it can ensure the quality only when stirred evenly; the price is relatively expensive The first waterproof materials of polyurethane waterproof coating are tar pitch and petroleum green paper felt, which originated in Europe and was introduced into China in 1920s With the development of science and technology, modern waterproof materials have developed rapidly In the 1970s, a variety of high minute backwater materials came out one after another In China, three series of waterproof materials are gradually formed: coil, coating and sealing material Synthetic polymer waterproof material is a kind of waterproof coating material which is made up of synthetic rubber or contract resin as the main film-forming material and other auxiliary materials There are many brands of synthetic molecular waterproof materials, such as polyurethane, acrylic acid and their mixtures The classification of waterproof coating can be divided into: polymer modified asphalt waterproof coating, synthetic polymer waterproof coating and organic-inorganic composite waterproof coating It is used for building roof, toilet room, underground and waterproof works with impervious and moisture-proof requirements Because it forms a continuous waterproof membrane without joints after curing, it is especially suitable for waterproof and moisture-proof of multi node or special-shaped parts 2 The policy orientation of waterproof coating in the announcement of "11th Five Year Plan" promotion and application of construction industry and the technology of Prohibition (the first batch) issued by the Ministry of construction, polyurethane waterproof coating, pure acrylic waterproof coating, spray polyurea waterproof technology and polymer cement waterproof coating are listed as the promotion and application products (the first batch); Tar polyurethane waterproof coating and water-based PVC tar waterproof coating (also known as PVC ointment) are listed as the waterproof works prohibited for housing construction 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,