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

Short Description:

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.


Product Detail

Product Tags

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

6

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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