100% Original Castable Polyurethane Shoe Upper Prepolymer - Donspray 504 HFC-245fa base blend polyols – INOV
100% Original Castable Polyurethane Shoe Upper Prepolymer - Donspray 504 HFC-245fa base blend polyols – INOV Detail:
Donspray 504 HFC-245fa base blend polyols
INTRODUCTION
DonSpray504 is spray blend polyols, blowing agent is 245fa instead of HCFC-141B, it reacts with isocyanate to produce foam which has excellent performances, which are as follows,
1) fine and uniformity cells
2) low thermal conductivity
3) perfect flame resistance
4) good low-temperature dimensional stability.
It applies to all kinds of thermal insulation engineering which uses the spray technology, such as cold rooms, pots, large-scale pipelines and construction metope etc.
PHYSICAL PROPERTY
| Appearance |
Pale yellow to brown viscous liquid |
| Hydroxyl Value mgKOH/g |
200-300 |
| Dynamic viscosity（25℃） mPa.S |
100-200 |
| Specific gravity (20 ℃ ) g/ml |
1.12-1.20 |
| Storage temperature ℃ |
10-25 |
| Storage stability month |
6 |
RECOMMENDED RATIO
| Raw materials |
pbw |
| DonSpray 504 blend polyols |
100 g |
| Isocyanate MDI |
100-105g |
Reactivity Characteristics (The temperature of the system is 20℃,and the exact value varied depending on processing condition)
| Cream Time s |
3-5 |
|
Gel Time s |
6-10 |
FOAM PERFORMANCES
| Items |
Metric Unit |
Imperial Unit |
||
| Spray Density | GB 6343 | ≥35kg/m3 | ASTM D 1622 | ≥2.18 lb/ft3 |
| Closed-cell Rate | GB 10799 | ≥90% | ASTM D 1940 | ≥90% |
| Initial Thermal Conductivity（15℃） | GB 3399 | ≤24mW/(m.K) | ASTM C 518 | ≥2.16/inch |
| Compressive Strength | GB/T8813 | ≥150kPa | ASTM D 1621 | ≥21.76PSI |
| Adhesive Strength | GB/T16777 | ≥120kPa | ASTM D 1623 | ≥17.40PSI |
| Dimentional Stability 24h -20℃ | GB/T8811 | ≤1% | ASTM D 2126 | ≤1% |
| 24h 70℃ | ≤1.5% | ≤1.5% | ||
| Water Absorption | GB 8810 | ≤3% | ASTM E 96 | ≤3% |
| Fire Resistance | GB 8624 | Class B2 | ASTM D2863-13 | Class B2 |
PACKAGE
220kg/drum or 1000kg/IBC, 20,000kg/flexi tank or ISO Tank.
Product detail pictures:
Related Product Guide:
Our commission is always to provide our customers and clientele with best quality and aggressive portable digital products for 100% Original Castable Polyurethane Shoe Upper Prepolymer - Donspray 504 HFC-245fa base blend polyols – INOV , The product will supply to all over the world, such as: Hamburg, Nepal, Bolivia, We've established long-term, stable and good business relationships with many manufacturers and wholesalers around the world. Currently, we've been looking forward to even greater cooperation with overseas customers based on mutual benefits. You should feel free to contact us for more details.
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