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H457 Blended polyol (short demould time)

  Refrigerators and freezers
  H457 is designed for HCFC-141b blowing system. The foam made by H457 and MDI has very much short demould time, good dimensional stability. H457 can be used both is high and low pressure foaming machine.
  Appearance                                                       Yellow viscous liquid
  Viscosity                          cp, 25 Centigrade        2200-4000
  OH number                     mgKOH/g                   340-420
  Special gravity                 g/ml, 20 Centigrade      1.11
Recommended formulation:
  H457                                pbw                           100
  HCFC-141b                     pbw                           22-28
  MDI                                  pbw                           140-150
Reaction characteristics (hand mixing, 23-24 Centigrade):
  Cream time                      s                                8-10
  Gel time                           s                                60-80
  Tack free time                  s                                90-120
  FRD                               Kg/cm3                      24.0-27.0
Foam performances:
  Mould density                  Kg/cm3                      33.0
  Initial K factor                 W/m.K                       0.0190
  Closed cell content           %                              95MIN
  Compressive strength       KPa                            155MIN
  Dimensional stability        
    -30 Centigrade, 72hrs       %                              1.0MAX
  Demould time                  min                            5
  215Kg/drum, 1000Kg/drum or about 22MT/isotank
Storage and shelf life:
  Environment temperature is 10-25 Centigrade. Keep dry and ventilated. Shelf life is 6 months.
Safety data:
  Please feel free to contact us for MSDS.

Blended Polyols
Polyether Polyols
H.B.C. Films
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