General knowledge of coating: product characteristics and construction method of spraying quick setting waterproof coating

Core tip: spraying quick setting rubber asphalt waterproof coating is a new type of waterproof material, which has been applied in China for more than ten years, but it is a matter of recent years that the product is really recognized by the domestic waterproof industry and widely applied Spraying rapid curing rubber asphalt waterproof coating is composed of rubber asphalt emulsion A component and demulsifier B component Component A is composed of high solid content emulsified asphalt and high polymer, which are blended to form water-soluble mixture of high polymer and emulsified asphalt A Component B is ejected through two nozzles of special spraying equipment on site, and it is rapid after atomization and mixing (1 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 Coating home news: spraying quick setting rubber asphalt waterproof coating is a new type of waterproof material, which has been applied in China for more than ten years, but it is a matter of recent years that the product is really recognized by the domestic waterproof industry and widely applied Spraying rapid curing rubber asphalt waterproof coating is composed of rubber asphalt emulsion A component and demulsifier B component Component A is composed of high solid content emulsified asphalt and high polymer, which are blended to form water-soluble mixture of high polymer and emulsified asphalt A Component B is ejected by two nozzles of special spraying equipment on site After atomization and mixing, it quickly (within 10 s) demulsifies water and forms a film After drying, it forms a dense, continuous and complete rubber asphalt coating with high elongation, super elasticity and excellent durability, as well as waterproof, anti-corrosion, anti-seepage and protective functions One time spraying can reach a thickness of more than 2 mm, and the construction speed is fast and environmental protection In order to achieve the excellent product performance of spraying quick setting rubber asphalt waterproof coating, it is necessary to produce emulsified asphalt that meets the requirements of spraying quick setting rubber asphalt waterproof coating The principle requirements for emulsified asphalt: ① high solid content, more than 58%; ② small particle size, less than 5mm, smaller particle size, finer and denser coating; ③ good compatibility with rubber latex; ④ fast demulsification; ⑤ mechanical It has good stability Emulsified asphalt is mixed with rubber latex by mechanical mixing Meanwhile, during the spraying process, the product shall withstand high-speed and high-pressure shear force; ⑥ it has good storage stability, and the product does not layer or separate out during the storage period The product quality requirements of spraying quick setting rubber asphalt waterproof coating shall meet the requirements of JC / T 2317-2015 spraying rubber asphalt waterproof coating (announcement) The standard is prepared by China building materials inspection and Certification Group Suzhou Co., Ltd and Suzhou non metallic mineral industry design and Research Institute The standard specifies the general requirements and technical requirements for spraying quick setting rubber asphalt waterproof coating products 1、 Product characteristics 1) ultra high elasticity: the elongation at break of the coating can reach more than 1000%, which is suitable for expansion joints and deformation joints It can effectively solve the problems of leakage and corrosion caused by stress deformation, expansion cracking, puncture or poor connection of various structures It can effectively deal with the structural deformation and ensure the waterproof effect 2) Overall waterproof: the coating can perfectly cover the base layer and realize the seamless connection of the coating, so as to meet the requirements of no water channeling and no peeling It is more simple and reliable for the base construction with special structure or complex shape 3) Strong puncture resistance: the reticular structure formed by rubber in the coating is compact, and has super high elongation, so it has good puncture resistance, which is suitable for the parts easy to be punctured 4) Self sealing and self-healing: high elasticity and high elongation make the self-healing function of the coating film, and the general puncture can be repaired by itself without leakage 5) Excellent chemical resistance and temperature resistance: the coating has excellent chemical corrosion resistance, acid, alkali, salt and chlorine resistance, and excellent high and low temperature resistance 6) Mechanical construction: after mechanical spraying, it will take shape instantly, and professional spraying machinery will be used for construction, which can greatly save construction cost and labor force, and greatly shorten construction period 7) Flexible and diverse construction methods: in addition to spraying construction methods, painting methods such as brushing and scraping can also be used to meet the special requirements for water-proof operations such as water outlets, internal and external corners, construction joints, structural cracks, etc 8) It can be constructed on wet surface: it can be constructed on wet and no open water base, which is convenient for application in subway, tunnel, water conservancy and other engineering fields 9) Water based, environment-friendly and energy-saving: as a new generation of energy-saving and environment-friendly waterproof material, in the process of production, construction and use, no organic solvent, cold refrigeration spray, non-toxic and tasteless, no exhaust emissions, no pollution During the whole construction process, there is no need for heating, normal temperature construction and open fire, which ensures the safety and reliability of construction 2、 Application of spraying quick setting rubber asphalt waterproof coating The market application scale of spraying quick setting rubber asphalt waterproof coating is also expanding year by year, and its application field is also expanding year by year: from a single underground side wall, bottom plate and common roof waterproof, tunnel, landscape lake waterproof maintenance and other projects, to gradually large-scale application in new large-scale municipal projects (such as landfill landfill landfill landfill leachate storage pool, sewage treatment pool, subway tunnel And other waterproof projects), high-speed railway station buildings and other major projects related to the national economy and people's livelihood, as well as the waterproof projects of color steel roof, planting roof, garage, etc At present, the main subdivisions of application engineering parts of spraying quick setting rubber asphalt waterproof coating are: underground building foundation waterproof (underground garage, subway, basement, underpass), roof waterproof (roof, balcony, parapet, roof green belt), highway pavement waterproof, railway pavement waterproof, subway waterproof (tunnel, platform, etc.), tunnel waterproof and anti-seepage (railway, bridge, highway tunnel Road and culvert), water treatment plant waterproof (reservoir, sewage pool, underground landfill), steel structure roof waterproof and anti-corrosion (color steel plate, white sheet roof), artificial lake, water conservancy facilities (canals, reservoirs, etc.) have been widely used It is recognized as one of the "10" most potential waterproof materials And the application amount is increasing year by year Conditions: the construction environment temperature of waterproof and anti-corrosion protective layer shall be greater than 5 ℃ The ventilation equipment shall be embedded in advance in the construction under the non ventilated and humid environment, and the waterproof construction shall not be carried out in rainy days, snowy days and above level 5 Requirements: 1 The pipes, embedded parts, equipment foundation, etc passing through the waterproof layer shall be buried and installed before the construction of the waterproof layer; 2 The drainage slope of the base course shall meet the design requirements; 3 The gap between the pipes and the structure shall be sealed with fine stone concrete or polymer waterproof mortar; 4、 Clean the base surface constructed on the same day The base layer shall be firm, free of looseness, sanding and unevenness The base surface shall be clean and damp, but there shall be no open water, oil, sundries and other materials that may damage the waterproof layer If the surface of the base layer is obviously unevenness, it is better to level it with cement mortar first; 5、 If the rainwater inlet, construction joint, internal and external corner, pipe root, equipment foundation, etc need to be strengthened locally, hand scraping liquid rubber waterproof coating shall be applied to dip coating 70-80g / m2 short fiber needled non-woven fabric for sticking 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,