China 2019 wholesale price Castable Polyurethane Prepolymer - Donfoam 823PIR CP/IP base blend polyols for continuous PIR block foam – INOV Manufacturer and Supplier

2019 wholesale price Castable Polyurethane Prepolymer - Donfoam 823PIR CP/IP base blend polyols for continuous PIR block foam – INOV

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2019 wholesale price Castable Polyurethane Prepolymer - Donfoam 823PIR CP/IP base blend polyols for continuous PIR block foam – INOV Detail:

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

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

RECOMMENDED RATIO

Items

PBW

DK-1103 Blend Polyether Polyol

CP 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 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%
Flammability	ASTM D1692	Self extinguishing

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