| Customization: | Available |
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| Molecular Principal Chain: | Heterochain Polymer |
| Color: | Yellow |
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SDL3232 is a general flame retardant rigid PU foam designed for continuous production of color steel sandwich panels, widely used in cold storage, industrial buildings, and roofing systems. With low thermal conductivity (0.018-0.024 W/m·K) and oxygen index of 23%, it provides excellent fire resistance while maintaining energy efficiency and dimensional stability in extreme temperatures (-50°C to 70°C).
Key Benefits:
Flame Retardant (Oxygen Index 23%) - Meets basic fire safety requirements.
Superior Thermal Insulation - Minimizes energy loss in buildings.
High Compressive Strength (0.12-0.20 MPa) - Durable for structural applications.
Fast Curing (9-15s cream time) - Enhances production efficiency.
Low Water Absorption (≤3%) - Resists moisture damage.
| Property | SDL3232 (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) | 300-500 cps | 350-500 cps | Smooth continuous processing |
| Cream Time | 9-15 s | - | Fast reaction time |
| Gel Time | 35-80 s | - | Balanced curing speed |
| Thermal Conductivity | - | - | 0.018-0.024 W/(m·K) |
| Oxygen Index | - | - | 23.0±1% (flame retardant) |
Balanced Flame Retardancy - Oxygen index 23% for basic fire safety needs.
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
Industrial Roofing/Walls
Prefab Building Modules
HVAC Insulation
Fire-Rated Door Cores
| Parameter | Recommended Value |
|---|---|
| Mixing Ratio (SDL3232:PM400) | 1:1.3 (volume ratio) |
| Material Temperature | 23±3°C |
| Machine Pressure | ≥130 bar |
| Belt Temperature | 40-50°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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