| Customization: | Available |
|---|---|
| Molecular Principal Chain: | Heterochain Polymer |
| Color: | Light Yellow |
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SDL3222 is a high flame-retardant rigid polyurethane (PU) foam designed for continuous production of color steel sandwich panels, ideal for cold storage, industrial buildings, and fire-safe constructions. With an oxygen index ≥26% and low thermal conductivity (0.018-0.024 W/m·K), it combines fire resistance with energy efficiency, meeting stringent safety standards.
Key Benefits:
High Flame Retardancy (Oxygen Index ≥26%) - Exceeds standard fire safety requirements.
Exceptional Thermal Insulation (0.018-0.024 W/m·K) - Reduces energy costs.
Low Water Absorption (≤3%) - Prevents moisture damage.
Fast Curing (9-15s cream time) - Boosts production efficiency.
Dimensional Stability (0-2% change) - Resists warping in extreme temps (-50°C to 70°C).
| Property | SDL3222 (Blend Polyol) | PM400 (Recommended MDI) | Foam Performance |
|---|---|---|---|
| Appearance | Light yellow liquid | Brown liquid | Rigid, closed-cell foam |
| Density (25°C) | 1.10±0.10 g/cm³ | 1.22-1.25 g/cm³ | Final density: 30-50 kg/m³ |
| Viscosity (25°C) | 250-500 cps | 350-500 cps | Smooth continuous processing |
| Cream Time | 9-15 s | - | Ultra-fast reaction |
| Gel Time | 35-80 s | - | Balanced curing speed |
| Thermal Conductivity | - | - | 0.018-0.024 W/(m·K) |
| Oxygen Index | - | - | ≥26% (flame retardant) |
Superior Fire Safety - Oxygen index ≥26% vs. competitors' ≤22%.
Energy-Efficient - Lower thermal conductivity than standard foams.
Optimized for Continuous Lines - Fast rise time (70-180s) increases output.
Eco-Friendly (Low ODP) - Safer for the environment.
Cold Storage Panels
Fire-Rated Roofing/Wall Systems
Industrial Warehouse Insulation
Prefab Fire-Safe Buildings
HVAC Duct Insulation
| Parameter | Recommended Value |
|---|---|
| Mixing Ratio (SDL3222:PM400) | 1:1.5 (volume ratio) |
| Material Temperature | 23±3°C |
| Machine Pressure | ≥130 bar |
| Belt Temperature | Summer: >55°C, Winter: >60°C |
Critical Notes:
Calibrate foaming machine flow (≤1 g/s fluctuation).
Maintain MDI temperature at 18-28°C for optimal reactivity.
Store in sealed drums (15-25°C) to prevent moisture absorption.
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