All Water Blown Blend Polyol EX-7220 For Rigid Spray Foam
EX-7220 is a spray blend polyol, which designed for water-blown foaming systems.
It is widely used in building exterior wall insulation, integrated insulation and waterproofing, cold storage, and other thermal insulation projects. This system features excellent temperature adaptability and mixability, suitable for construction under various environments and with different equipment. The resulting foam offers outstanding thermal insulation, high crack resistance, high closed-cell content, high compressive strength, and good adhesion.
| Unit | EX-7220 | |
|---|---|---|
| Appearance | Light yellow to brownish yellow transparent liquid | |
| Viscosity (25℃) | mPa·s | 300-500 |
| Specific Gravity (20℃) | g/ml | 1.05-1.15 |
| Hydroxyl Value | mgKOH/g | 100-200 |
| Moisture Content | % | 4-5 |
| REACTION PROPERTY | ||
| Material temperature | ℃ | 18-22 |
| Mixing time | s | 2-3 |
| Cream time | s | 3-5 |
| Stringing time | s | 6-12 |
| Free foam density | kg/m3 | 30-34 |
| High-Pressure Machine Mixing | ||
| Cream time | s | 1-3 |
| Stringing time | s | 3-5 |
| Machine foam density | kg/m3 | 30-34 |
| PRODUCT PROPERTY | ||
| Overall density | Kg/m3 | 40-48 |
| Compressive Strength | Kpa | ≥150 |
| Dimensional Stability | % | ≤1 |
| Thermal Conductivity | ≤0.027 | |
| Closed-Cell Rate | % | ≥90 |
| Water Absorption | % | ≤3 |
| Flame Retardant Performance | Oxygen Index | ≥28 |
Store in cool and dry place. The recommend storage temperature is 15-25℃. If you can’t use one drum up at a time, please inject N2.
The storage time of original packing is 6 months.
200kg per steel drum
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