Product introduction The coating is a water-based intumescent fire retardant coating, which rapidly expands and foams in case of fire, forming a dense carbonized heat insulation layer, isolating oxygen and delaying the heating rate of steel structures. The fire resistance limit can reach 0.5 to 2.5 hours, and it is suitable for load-bearing components with first-class fire resistance (such as columns, beams and roof load-bearing structures). It is environmentally friendly and nontoxic, and does not release harmful gas or smoke after heating, which meets the indoor air quality requirements. Smooth surface, good decorative effect, excellent anti-aging performance of the coating film, no pulverization after long-term use, adhesive strength ≥0.2MPa, water resistance ≥24 hours, freeze-thaw cycle ≥15 times, and adaptability to complex indoor environment. area of application Fire protection of indoor steel structures such as stations, industrial workshops, stadiums, high-rise buildings, etc., applicable components: steel columns, steel beams, roof load-bearing parts, evacuation stairs and light steel grids, etc. Description of construction technology Substrate treatment The surface of steel structure should be thoroughly derusted and painted with antirust primer, so as to avoid using primer with high brightness or hardness (which may affect adhesion). Before construction, dust and oil stains shall be removed, and non-fire prevention areas shall be shielded and protected. The construction temperature should be 5~45℃ and humidity ≤ 80%;Avoid construction in rain, snow, dew or extreme temperature. The coating should be protected from rain, sun exposure or mechanical damage before curing, and the water-based coating should be kept indoors or sheltered from rain after construction. Layered coating The first layer mainly covers the base material (≤1mm), and the interval between subsequent layers is 4-8 hours (depending on the temperature adjustment), and the total thickness needs to be controlled by measurement. Surface treatment After the bottom layer is dried, it can be painted with a matching topcoat to enhance the decoration. save Storage period: 6 months Storage environment: dry and ventilated cool place, temperature 5-25℃, packaging barrel mouth upward.