H458P Blended polyol
H458P is designed for HCFC-141b blowing system. H458P contains all chemicals including HCFC-141b. Good performance PIR foams can be made by H458P and MDI. The foam flame retardant ability can reach at DIN 4012 B2 grade. H458P is used to produce panels for constructions and it is suit for high pressure foaming machine.
Good flowing ability, homogeneous density distribution
Fine cells, high closed cell content
High compressive strength, good dimensional stability in high and low temperature.
Short demould time
Appearance Yellow transparent viscous liquid
Viscosity cp, 25 Centigrade 2000-3500
Special gravity g/ml, 20Centigrade 1.1
H458P pbw 100
MDI pbw 135-145
Reaction characteristics (hand mixing at 20-22 Centigrade):
Mixing time s 9
Cream time s 5-15
Gel time s 50-80
Tack free time s 75-125
FRD Kg/m3 30.0-35.0
Core density Kg/m3 37MIN
Closed cell content % 95MIN
Initial K factor W/m.K 0.0200
Compressive strength MPa 0.19MIN
70 Centigrade, 72hrs % 1.0MAX
-30 Centigrade, 72hrs % 0.5MAX
215Kg/drum, 1000Kg/drum or about 22MT/isotank
Storage and shelf life:
Environment temperature is 10-25 Centigrade. Keep dry and ventilates. Shelf life is 6 months.
Please feel free to contact us for MSDS.