INTRODUCTION
DonPipe 311 is a kind of blend polyether polyol with water as foaming agent, polyol as the main raw material, mixed with special auxiliary agent. It is developed for propping of water, oil or gas pipelines, furniture and other products，also with moisture proof and heat preservation functions . The polyurethane product prepared by reacting it with isocyanate has the following advantages:
-- Environment friendly, without destroying the ozone layer
-- High compressive strength of foam
-- Fine and smooth Foam cell , with good waterproof and moisture-proof performance
PHYSICAL PROPERTY
|
DonPipe 311 |
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| Appearance Hydroxyl value mgKOH/g
Dynamic viscosity （25℃） mPa.S Density （20℃） g/ml Storage temperature ℃ Storage stability months |
Light yellow transparent viscous liquid 300-400 800-1000 1.1-1.16 10-25 6 |
RECOMMENDED RATIO
|
Pbw |
|
| DonPipe 311Isocyanate |
100 100-120 |
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 30-80 100-200 120-240 80-500 |
20-25 20-70 80-160 100-200 80-500 |
FOAM PERFORMANCES
| old 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 |
≥100 Kg/m3
≥90% ≤22mW/m.k ≥800 KPa ≤0.5% ≤1.0% B3、B2、B1 |