Polyurethane foam system for solar energy

Blend polyether polyol for solar energy Physical properties AppearanceLight yellow to brown yellow transparent liquidOH(mgKOH/g)300-400Dynamic viscosity(25)mPa.s300-450Density(20)g/ml1.12-1.15Storage Temperature10--25Storage stabilitymonth6 Process and reaction characteristics Handed mixFor high pressure machineMaterial Temperature30-4030--40Mold Temperature35-4535--45CTs12--165--10GTs40-6020--40TFTs70--9040--60Free Densitykg/m330--3528--33 Foam Properties Density ApparentGB/T 6343≥35kg/m3Obturator rateGB/T 10799≥90%Initial thermal conductivityGB/T 3399≤19mW/(m.K)Compressive strengthGB/T 8813≥140kPaDimensional Stability 24 hours -20GB/T 8811≤0.5% 24 hours 100≤1.0%