Donboiler 212 HCFC-141B base blend polyols

Donboiler 212 HCFC-141B base blend polyols

INTRODUCTION Donboiler212 is the blend polyether polyol consisted of polyols, catalyst, blowing agent and other additives. It can react with isocyanate to form rigid polyurethane foam with excellent thermal insulation property.

TYPICAL PROPERTY

Appearance	Brown-yellow transparent viscous liquid
Hydroxyl value  mgKOH/g	300-400
Viscosity       25℃ , mPa·s	300-500
Density        20℃ , g/cm3	1.05-1.15

RECOMMENDED RATIO

	pbw
Donboiler 212 blend polyol	100
Isocyanate	120±5
Material temperature	22±2 ℃

REACTION CHARACTERISTICS

	Manual Mixing	High Pressure Machine Mixing
Cream Time   s	10±2	7±2
Gel time      s	55±3	40-50
Tack free time  s	70-90	50-70
Free density  kg/m3	26.5-27.5	25.5-27

FOAM PERFORMANCES

Moulding Density	Kg/m3	≥35
Closed-cell rate	%	≥95
Thermal Conductivity  （10℃）	W/m.k	≤0.02
Compressive strength	KPa	≥120
Dimensional stability   24h -30℃	%	≤0.5
24h 100℃	%	≤0.5

PACKAGE 220kg/drum or 1000kg/IBC, 20,000kg/flexi tank or ISO Tank.