General knowledge of coatings: the base material of architectural coatings

Core tip: the base material of architectural coating, also known as film-forming material or adhesive, is the most important part of the coating, which plays a decisive role in the performance of the coating When the substrate is film-forming, with the evaporation of solvent (or water) in the coating, the binder molecules in the solution or polymer particles in the emulsion are close to each other and coagulate The pigment and filler are bonded to form a continuous coating, and the film is firmly bonded to the substrate The film forming substances of solvent based coatings are usually referred to as resins The film forming material in waterborne coatings is usually referred to as emulsion and redispersible rubber powder For architectural coatings 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 Home of coatings: the base material of architectural coatings, also known as film-forming substances or adhesives, is the most important component of coatings, which plays a decisive role in the performance of coatings When the substrate is film-forming, with the evaporation of solvent (or water) in the coating, the binder molecules in the solution or polymer particles in the emulsion are close to each other and coagulate The pigment and filler are bonded to form a continuous coating, and the film is firmly bonded to the substrate The film forming substances of solvent based coatings are usually referred to as resins The film forming material in waterborne coatings is usually referred to as emulsion and redispersible rubber powder What are the requirements for the base materials of architectural coatings? As the base material of architectural coating, the substance shall generally meet the following requirements (1) It can form film at room temperature because the building coating is directly applied on the interior wall, exterior wall, ceiling, ground and other different parts of the building, usually on-site construction, it is impossible to bake the building, so it is required that the base material can be dried at room temperature or crosslinked and solidified at room temperature (2) The building coating with good water resistance is applied on the surface of the building, especially the coating on the outer wall surface is often washed by rain or other water, and the inner wall surface also has the problem that the coating is stained and needs to be scrubbed, so the base material is required to have good water resistance after drying and hardening (3) Building coatings with good alkali resistance are mainly applied on the surface of cement concrete or cement mortar, and the surface of these base materials is alkaline, so the base materials are required to have good alkali resistance (4) Good weather resistance is mainly used as the base material of exterior wall coating As the coating formed by exterior wall building coating is exposed to the atmosphere, it will be eroded by sunlight, rain and other harmful substances in the atmosphere In order to maintain a certain durability of the coating, the main film-forming substances are required to have good weather resistance (5) VOC, free formaldehyde and heavy metal content should meet the requirements of environmental protection, especially for indoor coatings In addition, a wide range of materials, rich resources and moderate prices are also necessary conditions What are the types of base materials for architectural coatings? The basic materials used in architectural coatings are as follows: (1) organic compounds (1) water-soluble resins, such as polyvinyl alcohol, polyvinyl formal, etc., such as acrylic resin emulsion, styrene acrylic emulsion, ethylene propylene emulsion, ethylene vinyl acetate solution, silicone acrylic emulsion, polyurethane emulsion, fluorocarbon emulsion, etc ③ solvent based synthetic resins such as acrylic resin, acrylic polyurethane resin, silicone modified acrylic resin, chlorinated rubber, epoxy resin, fluorocarbon resin, etc (2) Inorganic type ① silicate such as potash water glass, sodium water glass, etc ② silica sol (3) inorganic organic compound, such as silica sol styrene acrylate emulsion, silica sol, ethylene propylene emulsion, silica sol vinyl acetate emulsion, polyvinyl alcohol water glass, etc In the above resins, the most widely used ones are synthetic resin emulsion and solvent based synthetic resin Water soluble resin is rarely used as the base material of architectural coatings 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,