Building steel structure Fire retardant coating Manufacturer: Non expansion expansion type
Fire protection of building steel structure coating The manufacturer wholesales non expansive and expansive heat insulation and fire retardant coatings. The fire retardant coatings for building steel structures are the products produced by our factory according to GB14907-2018 specifications, and the fire retardant properties are available for 1-4h. For details, please consult customer service. The non expansive fire retardant coatings for building steel structures Lightweight granular porous heat insulation materials, adhesives, performance enhancing materials and various auxiliary form : The coating can be used as a fireproof coating for steel frames and load-bearing steel structures in various outdoor buildings, which can play a good role in heat insulation and fire protection for steel structures
When the temperature of building steel structure members rises to At a critical temperature of 540 ℃, steel products Will lose its bearing capacity, and for building fires, the fire site temperature is mostly 800-1200 ℃. Generally speaking, the fire site temperature can rise to above 700 ℃ within 10 minutes of the fire, so the exposure without fire protection Steel structure The danger of fire is very great. When the thin steel structure fireproof coating produced by our company is applied on the surface of steel members in buildings and structures coating The expanded foam forms a carbonized fire-resistant and thermal insulation protective layer. The protective layer not only insulates oxygen, but also has low thermal conductivity, which delays the speed of heat transfer to the protected substrate, so as to avoid the direct threat of flame and high temperature to steel members, thus improving the fire resistance of steel structures. The product can meet the fire resistance requirements of The requirements for 0.5h-2.5h fire protection are applicable to columns, beams, roof load-bearing components and evacuation with a single layer of middle support such as fire resistance stairs Etc; Steel structural members supporting single and multi-storey columns, beams, roof load-bearing members, evacuation stairs, etc.
Construction process:
Rust removal and antirust Primer Painting It shall comply with the design requirements and current relevant specifications, and the dust, oil stain and other sundries on the surface of steel members shall be removed. The application of fire retardant coating shall be carried out before interior decoration and under the condition that it will not be damaged by subsequent works. During construction, the wall surface doors and windows 、 mechanical equipment And other components shall be shielded. Before coating, the coating shall be fully stirred evenly. If the coating is too thick, water can be added appropriately, and it can be diluted to be suitable for coating without flowing. This product is suitable for coating by spraying method. When the air pressure is Spray evenly with bucket spray gun with muzzle diameter of 4~8mm under the pressure of 0.4~0.6MPa. The spraying thickness of each coat shall be suitable to cover the surface of the base course, generally not more than 1mm; The next coat can be applied after the previous coat is dry; The thickness of each coat can be appropriately increased from the second coat, but it is better not to flow.
matters needing attention:
During the construction process and before the drying and curing of the coating, the ambient temperature should be kept at 5~38 ℃, the relative humidity should not be greater than 80%, and the air should be circulated.
