Donfoam 824PIR HFC-245fa base blend polyols for continuous PIR block foam

Donfoam 824PIR HFC-245fa base blend polyols for continuous PIR block foam

INTRODUCTION DonFoam 824/PIR  is a kind of blend polyols using hfc-245fa foaming agent, with polyol as the main raw material, mixed with special auxiliary agent, suitable for the insulation of construction, transportation, shell and other products. This material is specially developed for continuous line .The polyurethane product prepared by reacting it with isocyanate has the following advantages: -- Eco-friendly, without destroying the ozone layer -- High compressive strength and good homogeneity of isotropic strength -- Excellent thermal insulation performance and dimensional stability

PHYSICAL PROPERTY

	DonFoam 824/PIR
Appearance OH value                   mgKOH/g Dynamic viscosity（25℃）      mPa.S Density   （20℃）      g/ml Storage temperature              ℃ Storage stability ※          months	Light yellow to brown transparent liquid 250-400 300-500 1.15-1.25 10-25 3

RECOMMENDED RATIO

	Pbw
DonFoam824/PIRIsocyanate	100 150-200

TECHNOLOGY AND REACTIVITY (the exact value varies depending on processing conditions)

	Manual Mix	High pressure
Raw Material Temperature      °CCream time       S Gel time      S Free density  Kg/m3	20-25 20-50 160-300 40-50	20-25 15-45 140-260 40-50

FOAM PERFORMANCES

Overall Molding DensityClosed-cell Rate Initial Thermal Conductivity（15℃） Compressive Strength Dimensional Stability   24h  -20℃ 24h  100℃ Flammability

GB/T 6343  GB/T 10799 GB/T 3399 GB/T 8813 GB/T 8811   GB/T 8624

≥40 Kg/m3≥90% ≤22mW/m.k ≥150 KPa ≤0.5% ≤1.0% B2、B1