# WATER-BASED INTUMESCENT FIRE-RESISTANCE MASTIC COATING RAINBOW PAINTS ## Product Code FM-906 ## Type Water-based intumescent fire-resistant coating formulated with non-combustible resin, special pigments and additives. When exposed to fire, the film expands to form sponge-like foam insulation, which effectively blocks heat conduction and slows temperature rise of steel structural components. ## Application Fire protection for beams, columns of steel structures. Various fire resistance durations (30, 60, 90, 120, 180 minutes) can be achieved by adjusting dry film thickness. ## Properties 1. Low-temperature activation: Foam layer forms above 200°C, expanding dozens of times to insulate heat and protect structural safety. 2. Asbestos-free: No asbestos fiber contained in the coating. 3. Thin film fireproof performance: Outstanding fire resistance with minimal dry film thickness. 4. Smooth & aesthetic surface: Uniform flat finish after spraying, compatible with all topcoat colors. 5. High build, easy to apply. ## Specification Data - Color: White - Gloss: Semi-gloss - Recommended Film Thickness: - Single brush coat: Wet 0.3 mm, Dry ~0.2 mm - Single spray coat: Wet 0.80 mm, Dry ~0.5 mm - Theoretical Coverage: 23.5 ㎡/bucket (at 0.5 mm dry film, loss excluded) - Compatible Coatings: - Primer: No.1076 Rainbow Zinc Phosphate Anti-Corrosion Primer (EP-66) or other Rainbow approved primers & equivalents - Topcoat: Water-based topcoat (No.406 FM) or other Rainbow approved topcoats & equivalents - Specific Gravity: 1.30 ± 0.1 Kg/L - Other Data: Weight Solids: 69% ±3% ### Compliance Test Standards 1. BS 476 Part 21: 1~3 hour fire resistance for load-bearing steel structures 2. CNS 11728 Construction Fireproof Coating, Type 1 Intumescent 3. CNS 14705-1 Class II Flame Retardant Test Passed 4. CNS 15080 Table I D: Compliant with VOC limit for water-based coatings (g/L) 5. Cable standard certified, qualified for cable construction projects 6. Coating system passed indoor & outdoor durability tests including ANSI/UL 263, EU EAD 350402-00-1106 and BS EN 16623:2015 ## Application Methods Brush Coating, Airless Spray ### Airless Spray Parameters - Nozzle Size: 0.023" ~ 0.027" - Secondary Air Pressure: 50~80 psi - Pressure Ratio: 45:1 or higher ## Drying Time Tack-free: Within 1 hour ## Recoating Interval - Spray: Minimum 4 hours - Brush: Minimum 1 hour ## Storage Stability - Shelf Life: Minimum 12 months under normal storage - Flash Point: Above 100°C