INTRODUCTION
DonPanel 423/PIR is a kind of blend polyether polyol which adopts cyclopentane as foaming agent, takes polyol as the main raw material and is mixed with special auxiliary agent. It is suitable for thermal insulation of building boards, cold storage boards and other products.This material is specially developed for continuous line .The polyurethane product prepared by reacting it with isocyanate has the following advantages:
-- No greenhouse effect and does not damage the ozone layer
- Good fluidity and uniform foam density
--Excellent dimensional stability and fire resistance
PHYSICAL PROPERTY
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DonPanel 423/PIR |
|
| Appearance
Hydroxyl value mgKOH/g Dynamic viscosity （25℃） mPa.S Density （20℃） g/ml Storage temperature ℃ Storage stability months |
Light yellow transparent viscous liquid 150-250 300-500 1.15-1.25 10-25 6 |
RECOMMENDED RATIO
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Pbw |
|
| DonPanel 423/PIR
Isocyanate |
100 150-200 |
TECHNOLOGY AND REACTIVITY (the exact value varies depending on processing conditions)
|
Manual mix |
High pressure |
|
| Raw material temperature ℃
CT S GT S TFT S Free density Kg/m3 |
20-25 7-20 25-55 30-60 35-40 |
20-25 5-15 20-40 30-55 34-40 |
FOAM PERFORMANCES
| Mold density
Close-cell rate Thermal conductivity （10℃） Compression strength） Dimensional stability 24h -20℃ 24h 100℃ Flammability |
GB/T 6343 GB/T 10799 GB/T 3399 GB/T 8813 GB/T 8811
GB/T 8624 |
≥42 Kg/m3
≥90% ≤22mW/m.k ≥120 KPa ≤0.5% ≤1.0% B3、B2 |