INTRODUCTION
Donfoam813 blend polyols use CP or CP/IP as blowing agent ,used in the production of high flame retardant PIR block foam, with performances of uniform foam cell , low thermal conductivity, good thermal insulation and flame retardant, low temperature no shrinking crack etc. Widely used in the process of all kinds of insulation work such as: building external wall, cold storage, tanks, large pipes etc.
PHYSICAL PROPERTY
Appearance
Dynamic viscosity (25℃) mPa.S Density (20℃) g/ml Storage temperature ℃ Storage stability month |
Light yellow to brown transparent liquid 500±100 1.20±0.1 10-25 6 |
RECOMMENDED RATIO
Items |
PBW |
Blend Polyols
CP or CP/IP Isocyanate |
100 11-13 140-150 |
TECHNOLOGY AND REACTIVITY (the exact value varies depending on processing conditions)
Manual Mixing |
|
Raw Material Temperature ℃
Mold Temperature ℃ CT s GT s TFT s Free Density kg/m3 |
20-25 Ambient Temperature (15-45℃ ) 35-60 140-200 240-360 28-35 |
FOAM PERFORMANCES
Item |
Test Standard |
Specification |
Overall Molding Density
Molding Core Density |
ASTM D1622 |
≥50kg/m3 ≥40kg/m |
Closed-cell Rate | ASTM D2856 |
≥90% |
Initial Thermal Conductivity(15℃) | ASTM C518 |
≤24mW/(m.K) |
Compressive Strength | ASTM D1621 |
≥150kPa |
Dimensional Stability
24h -20℃ RH90 70℃ |
ASTM D2126 |
≤1% ≤1.5% |
Water Absorption Rate | ASTM D2842 |
≤3% |