| Customization: | Available |
|---|---|
| CAS No.: | 9003-11-6 |
| Formula: | C5h10o2 |
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For a comprehensive collection of our product manuals, feel free to reach out. We offer detailed information on our Blend Polyol Series, Flexible Foams Series, CASE applications, and more.
Introduction
DonSpray 502 is a highly advanced spray-blend polyol, formulated to react seamlessly with isocyanate, delivering exceptional foam properties that include:
Fine and uniform cell structure
Remarkably low thermal conductivity
Outstanding fire resistance capabilities
Exceptional dimensional stability at low temperatures
Perfectly suited for a wide array of thermal insulation projects utilizing spray techniques, DonSpray 502 is indispensable for cold storage facilities, large vessels, extensive pipeline systems, and both the exterior and interior walls of buildings.
Additional specifications are available. Please contact us to receive the complete catalogue.
| Appearance | Pale yellow to brown viscous liquid |
|---|---|
| Hydroxyl Value | 200-300 mgKOH/g |
| Dynamic Viscosity (25°C) | 100-200 mpa.s |
| Specific Gravity (20°C) | 1.12-1.20 g/ml |
| Storage Temperature | 10-25°C |
| Storage Stability | 6 months |
Recommended Ratio
| Component | Ratio (pbw) |
|---|---|
| Spray 502 | 100 |
| Isocyanate | 100-105 |
Reactivity Characteristics
The component temperature is maintained at 20°C. The actual temperature may vary according to pipe diameter and specific processing conditions.
| Item | Time (s) |
|---|---|
| Cream Time | 3-5 |
| Gel Time | 6-10 |
Foam Performances
| Items | Test Method | Index |
|---|---|---|
| Spray Density | GB 6343 | ≥35kg/m³ |
| Closed-cell Rate | GB 10799 | ≥90% |
| Initial Thermal Conductivity (15°C) | GB 3399 | ≤24mW/(m·K) |
| Compressive Strength | GB/T8813 | ≥150kPa |
| Adhesive Strength | GB/T16777 | ≥120kPa |
| Elongation at break | GB/T9641 | ≥120kPa |
| Dimensional Stability (24h -20°C) | GB/T8811 | ≥10% |
| Dimensional Stability (24h 70°C) | GB/T8811 | ≤1% |
| Water Absorption | GB 8810 | ≤1.5% |
| Oxygen Index | GB 8624 | ≥26 |
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