| Customization: | Available |
|---|---|
| CAS No.: | 9003-11-6 |
| Formula: | C5h10o2 |
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Introduction
Introducing DonSpray 502, a state-of-the-art spray-blend polyol meticulously engineered to react harmoniously with isocyanate. This advanced formulation offers unparalleled foam properties, including:
A fine, uniform cell structure that ensures superior quality
Incredibly low thermal conductivity, maximizing energy efficiency
Remarkable fire resistance capabilities for enhanced safety
Exceptional dimensional stability even in low temperatures, providing reliability in various conditions
DonSpray 502 stands as a crucial solution for diverse thermal insulation projects utilizing spray techniques. It is essential for cold storage facilities, large vessels, comprehensive pipeline systems, and both external and internal building walls.
For full specifications and to explore all our offerings, please contact us for 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 a steady 20°C. However, the actual temperature may fluctuate based on 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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