Ultra-thin Structural Steel Fire Retardant Coating

Super-thin steel structure fire-resistant coating refers to fire-resistant coatings with a thickness of 3mm or less, offering good decorative effects. These coatings can expand and foam at high temperatures and have a fire resistance limit generally not exceeding 2.5 hours.

This type of fire-resistant steel structure coating is typically a solvent-based system, featuring excellent adhesion strength, good weather and water resistance, good leveling properties, and decorative qualities. When exposed to fire, it slowly expands and foams to form a dense and hard fire-resistant insulation layer. This fire-resistant layer possesses strong resistance to thermal shock, delays the temperature rise of the steel, and effectively protects the steel components.

Thickened fire-resistant steel structure coatings can be applied by spraying, brushing, or rolling, and are commonly used on building steel structures with fire resistance requirements of 2.5 hours or less. New types of ultra-thin steel structure fire-resistant coatings with fire resistance of 2.5 hours or more have emerged. These coatings primarily use special structures of poly(methyl methacrylate) or epoxy resins compounded with amino resins, chlorinated paraffin, etc., as the base adhesive. They are supplemented with fire-retardant systems such as high-polymer ammonium polyphosphate, pentaerythritol, and melamine. Titanium dioxide and wollastonite are added as inorganic refractory materials, and the composite is made with solvent oil No. 200.

A variety of light steel structures and trusses commonly utilize this type of fire-retardant coating for protection. Due to the ultra-thin coating of this fire-retardant paint, the amount used is significantly less than that of thicker or thinner steel structural fire-retardant coatings, thereby reducing the overall project cost and effectively providing fire protection for the steel structures, with excellent fire-resistant performance.