Polyol Isocyanate for Discontinuous Sandwich Panel Polyurethan Foam

Product details and specifications
BE-808 is formulated HFC-245fa and water as blowing agent. As an environmental friendly system with 0 ODP, it is widely used for polyurethane foam of discontinuous sandwich panel process. BE-808 blend polyol shows low thermal conductivity, high adhesive strength to the bases of panel and good flow ability.
The fire proof level for resulting foam can approach DIN 4102 norm-Class B3 (Chinese stander GB/T 8624-2012).
Typical liquid propertiesItems Blend polyol BE-808Isocyanate AppearanceYellow brown viscous liquidbrown viscous liquidViscosity, mPa.s at 20ºC200~800130~400Specific gravity, kg/m3,at 20ºC1.05~1.151.20~1.30Hydroxyl value, mgKOH/g310~380/NCO content, %/31~35Recommended proportion and process conditions BE-808100 (p.b.w)Isocyanate110~125 (p.b.w)Mould temperature40~50ºCMoulding release time20~40 mins.
(depends on the size of panel)Reaction data (Hand-mixing at 20ºC,Stirring speed≥2500rpm)Testing itemUnitsRangeCream timeS20~28Gel timeS95~115Tack free timeS110~140Free raise densityKg/m325.0~27.0Typical foam featureItemUnitsPropertiesCore densityKg/m339~45Initial thermal conductivity,23ºCmW/m.K≤21.0Closed cell content%≥95Compress strengthKPa≥190Dimensional stability,
-30ºC,48h
70ºC,48h
%
≤0.8
≤1.0
FAQ
Our service