General knowledge of coating: requirements for construction conditions of polyurethane rigid foam spraying

Core tips: 1 Environmental temperature requirements The suitable temperature for spray foaming is 15~35 degrees C, the temperature is too low, the foam is easy to fall off the surface of the object, and the density of the foam plastics is obviously increased, and the consumption of materials is obviously increased 2 Moisture content Isocyanates react easily with water to form brittle urea based materials Dehydration or frost is not allowed on the surface of the spray coating When the air humidity is too large, dehumidification is necessary, otherwise the adhesion between the foam plastic and the object will be affected 3, the wind Outdoors 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 Coatings home news: 1, ambient temperature requires that the suitable temperature for spraying foam is 15~35 degrees, the temperature is too low, the foam is easy to fall off the surface of the object, and the density of the foam plastics is obviously increased, and the consumption of materials is obviously increased 2 Water isocyanate is easy to react with water to form brittle urea based materials Dehydration or frost is not allowed on the surface of the spray coating When the air humidity is too large, dehumidification is necessary, otherwise the adhesion between the foam plastic and the object will be affected 3 When the wind is sprayed outside, when the wind speed is more than 5m/s, the heat loss is too large, and it is not easy to get high-quality foam plastics, and the material consumption is large, and the environment is obviously polluted 4 The surface to be sprayed shall be free of rust, dust, oil and moisture If necessary, it shall be treated to meet the construction requirements 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,