Жесткие полиуретановые системы для распыления пены Insulati

Rigid Polyurethane Systems for Spray foamInsulation(DQT-501B) ProductIntroduction DQT-501Bishighdensitysprayblendpolyols,itreactswithisocyanatetoproducefoamwhichhasexcellentperformances,whichareasfollows, 1)fineanduniformitycells 2)lowthermalconductivity 3)perfectflameresistance 4)goodlowtemperaturedimentionalstability. Itappliestoallkindsofthermalinsulationengineeringwhichusethespraytechnology,suchascoldstorages,pot,large-scalepipelines,constructionroofsandalltypesofabnormitythermalinsulationprojects. PhysicalProperties Appearance HydroxylValuemgKOH/g DynamicViscosity(25°C)mpa.s Gravity(20°C)g/ml StorageTemperature°C StorageStabilitymonth Lightyellowtobrownviscousliquid 310-380 100-200 1.12-1.20 10-25 6 RecommendedRatio pbw DQT-501Bblendpolyols Isocyanate 100 100-105 ReactivityCharacteristics (Thetemperatureofthesystemis20°C,andtheexactvaluevarieddependingonprocessingcondition) RTs GTs 3-5 6-10 FoamPerformances Items TestMethod Index SprayDensity Closed-cellRate InitialThermalConductivity(15°C) CompressiveStrength AdhesiveStrength Elongationatbreak DimensionalStability24h-20°C 24h70°C WaterAbsorption OxygenIndex GB6343 GB10799 GB3399 GB/T8813 GB/T16777 GB/T9641 GB/T8811 GB8810 GB8624 ≥50kg/m3 ≥90% ≤24mW/(m.K) ≥300kPa ≥120kPa ≥10% ≤1% ≤1.5% ≤3% ≥26