FIREPROOFING PAINT SOLUTION
Fireproof Paint is a kind of fireproof coating material that increases structural steel's fire-resistance limit, ensuring the building's fire-resistance level.
The steel structure is not naturally flammable and does not emit harmful gases when exposed to high temperatures. Therefore, fire does not directly affect the structure's load but can reduce the steel structure's bearing capacity and its load, leading to the collapse of the entire building. Protective measures are required if the heat resistance time to the critical point of the structural steel member does not meet the fire-resistance time prescribed by law.
Structure
Fireproof paint is composed of acrylic resin, polyphosphate compounds, pigments, and active ingredients. When exposed to fire, the paint reacts and creates a thick layer of insulation. The paint layer is highly sensitive to heat and helps create a thick protective shield, while also producing non-combustible gas particles such as CO2, H2O, and NH3, which lower the temperature of the flame and help protect the steel structure. This allows the structure to remain stable for a long time under high-temperature conditions. The products include primer and fireproof paint, and they are used for fire protection in factories, warehouses, schools, hospitals, and supermarkets with mainly iron and steel structures.
Primer layer: has an anti-corrosion effect on steel surface, enhances the ability to bond with fireproof coating. Epoxy-based anti-rust paint or equivalent can be used.
Fireproof paint: the main effect is to expand and create an insulating film when exposed to fire and high temperature for a long time.
Advantages of Fireproof paint
Paint dries quickly (2-3 hours) at 25°C
Non-toxic paint, no lead, mercury,...
Fireproof paint after burning does not leave much ash and dust.
Can be painted both indoors and outdoors.
Very easy to use, safe, uncomplicated, suitable for many fireproof surfaces
Quick and easy construction time, no additional costs incurred
Test results
Characteristics and mechanism of action
The polyphosphate compound start to decomposeat 250°C, producing phosphoric acid. At temperatures of 300°C to 800°C, phosphoric acid reacts with resins and carbon-rich components in paints, creating a layer of carbon slag that insulates steel structures. This process also produces non-combustible gases (N2, CO2) that form a "honeycomb" structure, enhancing heat resistance.
- At a temperature of 800°C, phosphoric acid reacts with other flame-retardant ingredients to form a heat-stable porous inorganic ash layer called TiP2O7, which is resistant to temperatures above 1000°C, this layer plays a role in reducing the temperature of iron, steel, wood, concrete, and as a binder.
- The carbon slag layer has a thickness of up to 80 times compared to the thickness of the original fireproof paint layer, which maintains a fire resistance time of up to 3 hours, providing insulation protection for structures inside the paint layer.
FIREPROOF PAINT CONSTRUCTION PROCESS
CONSTRUCTION CONDITIONS
Do not apply in rainy conditions or with air humidity above 85%.
Steel surfaces must be blast cleaned with TC:Sa2.0 or higher and be primed with Alkyd/Epoxy recommended rust primer.
It is recommended to apply paint for projects that have completed the roof and surrounding walls. In case there is no roof and wall, there must be a tarpaulin cover after painting to prevent rain from causing wetness and stagnant water on the painted surface.
The painted surface will be damaged if soaked in water.
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