Coating technology: analysis of precautions in the construction of spray polyurea waterproof coating

It is pointed out that the spray polyurea waterproof coating is a kind of elastomer coating produced by the reaction of isocyanate component (a component) and amino compound component (B component) It is a new solvent-free and pollution-free product developed in recent ten years to meet the requirements of environmental protection It has been widely used in many fields such as buildings, tunnels, high-speed railways, bridges, etc 。 Next, I'd like to introduce the main points of its construction technology Before construction: 1 Before the construction of polyurea, the base temperature shall be 3 ℃ higher than the dew point temperature, and continuous mixing shall be maintained during the construction; 2 If polyurea coating is found during inspection 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: spray polyurea waterproof coating is a kind of elastomer coating produced by the reaction of isocyanate component (component a) and amino compound component (component B) It is a kind of elastomer coating adapted to environmental protection in the last decade in the world A new type of solvent-free and pollution-free product is required to be developed, which has been widely used in many fields such as buildings, tunnels, high-speed railways, bridges and so on Next, I'd like to introduce the main points of its construction technology Before construction: 1 Before the construction of polyurea, ensure that the base temperature is 3 ℃ higher than the dew point temperature, and keep continuous mixing during the construction process; 2 If the polyurea coating is found to have bubbling, leakage and other defects during the inspection, it needs to be repaired immediately; 3 If the defect part is found to be short from the spraying time (≤ 6h), the surface of the defect coating can be polished, and the second spraying of polyurea can be directly carried out after cleaning; 4 If the defect part is found to be a long time from spraying (> 6h), the surface of the defect coating (extending 5-10cm outwards) shall be polished and cleaned, and a special treatment agent shall be applied Then, the special repair equipment shall be used to spray polyurea waterproof coating, repair and scrape flat, so as to make the whole coating continuous, dense and even During the construction: 1 During the spray polyurea construction, appropriate temperature, pressure and other equipment parameters shall be set according to the required materials to maintain the pressure balance, and the excessive pressure deviation will lead to the degradation of physical and chemical properties of the coating, blistering, non curing and other problems; 2 Select the primer according to the construction environment: select the special primer for the wet interface according to the high humidity and wet substrate; 3 Low temperature curing primer shall be selected for low temperature construction; 4 Construction shall not be carried out in rainy days; construction shall not be carried out in wind above level 4; 5 Operators shall wear work clothes, goggles, gloves, gas masks and other labor protection appliances during construction, and ensure good ventilation of construction environment; 6 Construction site shall use electricity safely, eliminate fire sources and equip with corresponding fire fighting equipment 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,