# HIGH TEMPERATURE UNDER INSULATION ANTI-CORROSION COATING (300℃) RAINBOW PAINTS ## Product Code No.1567 ## Type High-temperature resistant coating refined from modified silicone resin, heat-resistant and anti-rust pigments. ## Application Special anti-corrosion coating for steel structures operating up to 300℃. ## Properties 1. Excellent heat & cold resistance: Withstands continuous 300℃ high temperature and -196℃ low temperature 2. No cracking on repeatedly heated metal substrates, delivers superior anti-corrosion protection 3. Good passivation and rust prevention performance 4. Can be sprayed on surface-treated carbon steel, stainless steel and galvanized steel plates 5. Provides reliable protection under cyclic hot-wet and cold-heat alternating environments, suitable for CUI (Corrosion Under Insulation) service conditions ## Specification Data - Color: Black, Silver Gray - Specific Gravity: ≥1.4 Kg/L - Viscosity: ≥75 KU (25°C) - Drying Time - Surface dry: Within 2 hours (25°C) - Hard dry: Within 8 hours - Full cure: 7 days (25°C) - Recoating Interval: Min. 4 hours, Max. 72 hours - Film Thickness: Wet film 192 μm, Dry film 100 μm - Recommended Coats: 3 coats - Theoretical Coverage: 19.7 ㎡/Gal, 5.2 ㎡/L, 3.7 ㎡/kg (based on 100μm dry film) - Mix Ratio: Base : Hardener = 92 : 8 (by weight) - Volume Solids: 52±3% - Pot Life: 2 hours after mixing at 25°C - Thinner: No.1005 Thinner SP-12 - Thinner Dosage: 5~10% - Storage Stability: Minimum 18 months under normal storage ## Application Methods Conventional Spray, Airless Spray ## Construction Precautions ⚠️ 1. Thoroughly remove grease, moisture, dust, old paint film, rust and corrosive contaminants from substrate surfaces; blast clean to SIS Sa 2 1/2 or hand tool clean to SIS St 3. 2. Galvanized and stainless steel substrates require sweep blasting (SIS Sa 1) prior to coating. 3. Dilute base component with thinner evenly first before adding hardener. 4. Avoid sagging during spraying; single pass wet film thickness shall not exceed 200 μm. 5. Viscosity may rise sharply immediately after adding hardener; stir continuously for 2~3 minutes to restore normal viscosity. 6. Leave coating fully cured for 7 days at ambient temperature after construction; the cured film will not crack under alternating temperature cycles from room temperature to 300°C. ## Note All data provided in this product datasheet are derived from internal laboratory tests for construction design reference only. Actual performance varies subject to different construction environments. This document does not constitute any legally binding warranty or statement from the manufacturer. Contact our technical department for clarification of any uncertainties.