Coating knowledge: Construction and application prospect of exterior wall decoration coating

Core tips: exterior wall coating construction technology: (1) puttying: two layers of puttying, the first layer of puttying as the first layer of large surface primary scraping, and the second layer of puttying as the leveling layer After two coats of putty are scraped, check whether there are obvious concave and convex parts in front of the light The scraping layer of external wall putty should be based on the principle of making the surface smooth, and the putty layer should not be too thick (2) Grinding When sanding, the force should be light and even, and the direction of the force should be consistent It is forbidden to scratch the sand particles, so that the smooth wall becomes rough Moreover, if the sandpaper is not polished properly, the rough surface is irreparable by two coats of surface coating (3) Alkali resistant sealing primer Engineering Management 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 Paint Home News: exterior wall paint construction technology: (1) puttying: two layers of putty, the first layer of putty as the first layer of large surface primary scraping: the second layer of putty as the leveling layer After two coats of putty are scraped, check whether there are obvious concave and convex parts in front of the light The scraping layer of external wall putty should be based on the principle of making the surface smooth, and the putty layer should not be too thick (2) Grinding When sanding, the force should be light and even, and the direction of the force should be consistent It is forbidden to scratch the sand particles, so that the smooth wall becomes rough Moreover, if the sandpaper is not polished properly, the rough surface is irreparable by two coats of surface coating (3) Alkali resistant sealing primer The project management personnel can only agree to apply alkali resistant sealing primer after the putty layer is inspected to be qualified Generally, the primer coating is only applied once, and the surface coating can be carried out after 24 hours (4) surface coating The outer thread surface coating usually adopts roll coating and brush coating For the coating construction of large area of wall, the edge drawing shall be painted first, and then roll coating construction shall be followed from top to bottom, from left to right During roll coating, the construction viscosity of the coating shall be adjusted first, the knurling shall be fine and uniform, and the direction of the roller shall be the same The roller shall not roll up and down for a while, or roll left and right for a while Generally, after the roller covers the coating, roll up and down in line with the principle of rolling up and down, and then pull the coating evenly, and then roll up and down gently to brush the coating surface evenly (5) coating repair In order to prevent batch color matching error caused by multiple color matching, it is usually necessary to leave a little of the original batch of paint for repair, try to maintain the consistency of color matching, and the same wall will not have color difference Roll as follows, and then pull the coating evenly at an angle, and then roll up and down gently to evenly brush the coating surface The following points should be paid attention to when using the exterior wall decorative coating: (1) the wall surface after the exterior wall painting should be cured in time and pay attention to the drying time The curing does not pay attention to the wall cracks The drying time is not enough The alkali reinforcement makes the exterior wall paint white, alkali and discolor, or even part of it falls off, affecting the appearance (2) the flatness of the wall must be strictly controlled to meet the requirements of the national specifications, because the external wall construction and the main construction of many projects are not a unit, and the cooperation between them is not smooth If the flatness of the wall is poor, it will have a great impact on the coating construction It is difficult to do a good job of the overall flatness of the wall relying on the polishing and repair of the coating construction team (3) strictly implement the process flow Before painting, polishing and puttying must be careful, comprehensive and even It is not allowed to act carelessly It directly affects the durability and appearance of the paint (4) the primer surface paint shall be evenly painted, and the construction shall be carried out in strict accordance with the requirements, and the time interval shall meet the requirements If the construction unit randomly allocates, steals work and materials, and does not carry out the construction according to the regulations, it will cause discoloration and other phenomena, and there will be different degrees of quality defects within 2-3 years The application prospect of exterior wall decoration coating the development of construction industry and the demand of urban beautification, the building coating has been paid more and more attention because of its rich color, good safety, low price, small building load, simple construction, short construction period, easy renewal, low energy consumption and so on There are many advantages in comparison: the 11th five year plan proposes to take resource conservation as the basic national policy, develop circular economy, protect the ecological environment, accelerate the construction of resource-saving and environment-friendly society, and promote the coordination of economic development with population, resources and environment We will adhere to the principle of thrifty development, clean development and safe development to achieve sustainable development To build a resource-saving and environment-friendly society and realize sustainable development, we must restrict the development of industries that consume a lot of energy and have poor security This is undoubtedly the most powerful support in the struggle between external wall coating and wall tiles In addition, the exterior wall brick has obvious deficiencies in environmental protection, production, decoration, construction, protection of buildings, etc., and in the production process, the consumption of non renewable resources such as soil and coal is also quite large, and the price is relatively high, which increases the construction cost The main task of the development of China's paint industry will be to focus on building paint, so that the application of building paint in the exterior wall decoration accounts for more than 60% Therefore, the exterior wall coating has a good application prospect [focus on WeChat official account "paint net"; pay attention to surprises, scan code to see if your husband is selling paint.. "Paint group: 92525666] coatings house is focused on coatings, diatom mud, paint and coatings, coating technology, fire retardant coatings news information and coatings, diatom mud, paint and coating, coating technology, fire retardant coatings decoration knowledge and decoration effect map.