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polyurethane making sandwich panel
Main Characteristics:
Part A is high density spray blend polyols, it reacts with Part B--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 use the spray technology, such as cold storages, pot, large-scale pipelines, construction roofs and all types of abnormity thermal insulation projects.
| Technical parameters: | |||
| Item | A | B | |
| Solid content,% ≥ | 92 | ||
| Dry time,h ≤ | Dry time of Outside | 8 | |
| Dry time of Inside | 24 | ||
| Fracture tensile strength, Mpa ≥ | 1.9 | 2.45 | |
| Breaking elongation,(normal temperature),% ≥ | 450 | ||
| Water impermeablility,0.3Mpa 30 min | Impermeable | ||
| Flexilility at low temperature,°C ≤ | -35 | ||
| Bonding strength of Moist base,Mpa ≥ | 0.5 | ||
| Blend polyols 20°C | 100 | ||
| Isocyanate 20°C | 100-105 | ||
| Cream time, s | 3-5 | ||
| Gel time, s | 6-10 | ||
Hangzhou Future Machinery & Technology Co., Ltd.
We are profession manufacturer Polyurethane spray foam machine,Polyurethane injection foam machine,Polyurethane material and other product in China.We have the high quality and best price in this market.We are looking forward to have a nice cooperation with your company.
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