Donfoam 823PIR CP/IP base blend polyols for continuous PIR block foam

Donfoam 824PIR HFC-245fa base blend polyols for continuous PIR block foam

INTRODUCTION Donfoam823 blend polyether polyol 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 high 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

AppearanceDynamic 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
DK-1103  Blend Polyether PolyolCP or CP/IP Isocyanate	100 11-13 165-175

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 DensityMolding 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%
Flammability	ASTM D1692	Self extinguishing