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NCB type indoor ultra-thin steel structure fireproof coating

1, product composition:
NB-type indoor ultra-thin fire-retardant steel structure coating is a new type of organic composite resin and filler and other components, and use of high-performance flame retardant, foaming, carbon, catalysts, processed by the new fire-retardant coating.
2, product use:
It is used for fire protection, corrosion protection, heat preservation and decoration of bare steel structures such as gymnasiums, exhibition halls, power plants, airports, station waiting rooms, and industrial plants.
3, the principle of fire protection:
The paint is sprayed on the surface of the steel structure and usually plays a decorative role. If it is exposed to fire, it can expand and thicken and charring, forming a non-flammable sponge-like carbonaceous layer, thereby increasing the fire-resistant limit of the steel structure to more than 2.0 hours, and winning the fire-extinguishing time. Effective Protect steel structures from fire.
4, performance characteristics:
(1) Excellent fireproof performance, long fire-resistant time, able to withstand the test of fire;
(2) The coating is thin, easy to apply, suitable for spraying, rolling or brushing;
(3) High strength: It is not necessary to reinforce the wire mesh of fireproof coating during construction, and it can be used directly after mixing;
(4) excellent weather resistance, long-term protection of the surface layer from corrosion, no rust;
5, technical indicators:
No. Test item name Standard Requirements and Standard Terms Number results of testing This conclusion
1 The status in the container After stirring, it is in a uniform and delicate state without agglomeration. After stirring, it is in a uniform and delicate state without agglomeration. qualified
2 Drying time (dry) ≤8h 6h qualified
3 Initial dry crack resistance No cracks should appear No crack qualified
4 Bond strength ≥0.20MPa 1.13MPa qualified
5 Water resistance ≥24h The coating should be free from layering, foaming and peeling. Soaked for 24h, the coating did not rise, foam, fall off. qualified
6 Cold and heat cycle resistance ≥ 15 times The coating should have no cracking, peeling or blistering. After 15 cycles, the coating did not crack, peel off or blisters. qualified
7 Fire resistance When the coating thickness is less than (2.00±0.20)mm, the fire resistance limit should not be less than 1.0h.
Fire resistance determination: Loss of carrying capacity -
The maximum deflection of the coated steel beam is L0/20 (L0 is the span of the steel beam in mm).
The actual coating thickness is 2.15mm, and the fire test is carried out until 120min.
Fire resistance is equal to 2.0h.
qualified
6, construction methods:
(1) The construction of the fireproof coating, such as a large area should adopt self-weight spray gun, with automatic pressure regulation 0.4-0.6MPa; partial repair and a small area of ​​construction, available brush, spray or roller. Spray nozzles for spray primers can be used for spray coating when the adjustable nozzle diameter is 1-3mm. Such as artificial brushing, brushing the number of roads increased accordingly.
 (2) The thickness of each pass shall not exceed 0.5mm during spraying, and shall be sprayed once every 8 hours in fine weather conditions. When spraying a paint, it must be dried after the previous one and then sprayed again. Manually brushing each channel is thinner, and the number of channels is measured according to the thickness.
(3) According to the fire-resistant time requirements of the steel structure to be coated to determine the appropriate coating thickness, the coating consumption of 1-1.5 kg per square meter of the theory of spray coating is 1-1.5 kg.
(4) It is recommended to apply 1-2 times of acrylic or polyurethane anti-corrosion top coat after brushing fire retardant paint to ensure that the paint film is smooth and smooth, and has good anti-corrosion and decorative effects.
7, the amount of use:
Fire resistance design limit is 1 hour, spraying thickness 1.5mm, dosage 1.5-1.6kg/m2; refractory design limit is 2 hours, spraying thickness 2.0-2.5mm, dosage 2.2-2.8kg/m2.
8, storage environment:
It should be stored and transported in a dry and ventilated room at -5°C to 40°C. This coating is a solvent-based type that is far away from the fire and is safe to use. It is stored in a paint-like manner.