PUR-temadag, 30. maj - Erik Larsen (Bayer MaterialScience)

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PUR-temadag, 30. maj - Erik Larsen (Bayer MaterialScience)

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PUR-temadag, 30. maj - Erik Larsen (Bayer MaterialScience)

  1. 1. 30.05.2013/Erik Larsen/R&D ManagerPolyurethane Insulates Better:Introduction to Polyurethaneand Technical Insulation.
  2. 2. “Polyol” + “isocyanate” “urethane” + heat(liquid) (liquid) (solid)What are Polyurethanes (PUR)?
  3. 3. Polyol IsocyanateUrethanePolyurethanenetwork / matrixBasic PUR-reactions.
  4. 4. Additive Example PurposePolyols Polyethers, polyesters, polyamines - modify/determine physical/chemicalproperties.Catalysts Tertiary aminesOrganic metals- increase speed of reactions.- dominate special reactions.Blowing agents CBA: Water (CO2), Formic acid (CO)FBA: CFC, HCFC, HFC, HC, FC- foamed structure.- improve the insulation properties.Cell stabilizers Special siloxanes/ silicone oils - emulgate.- nucleate.- stabilize.Crosslinkers &chainextendersGlycerol, polyols, polyamines - increase hardness.- increase flexibility.Colours Pigments, carbon black - dye the polyurethane.Fillers Fibre, inorganic materials - modify properties (stiffness, fire perfor-mance, price, reduce shrinkage).FlameretardantsPhosphoric- and/or halogen basedadditives.- Improving fire performance.Common additives in PUR-systems*.*mainly in the polyol-blend
  5. 5. “The four corners of Polyurethanes”.Flexible/rigid foamed/solid thermosets.
  6. 6. “Polyol” + “isocyanate” “urethane”What are Polyurethanes (PUR)?
  7. 7. “Polyol” + “isocyanate” “urethane”What are Polyurethanes (PUR)?
  8. 8. “Polyol” + “isocyanate” “urethane”What are Polyurethanes (PUR)?
  9. 9. λλλλfoam = λλλλgas + λλλλmatrix + λλλλradiationFoam Insulation Performance0%25%50%75%100%Cell GasPUR MatrixRadiationFactors Contributing to Foam Thermal Conductivity (λλλλ = ability to conduct heat)
  10. 10. Blowing Agent Technologies for PolyurethaneChemical Class ODP[R11=1]GWP[100yrs, CO2=1]λλλλgas[mW/m*K]CFCs (1. generation) R-11 1 4750 7,8H-CFCs (2. generation) R-141b 0,1 725 9,8HFCs (3. generation) 245fa 0 1030 12,1365mfc 0 900 10,6Hydrocarbons Cyclopentane 0 11 12,6Isopentane 0 11 14,8HFOs (4. generation) Solstice LBA 0 <5 naFEA 1100 0 10 10,7Others Water (CO2) 0 1 16Air 0 0 27
  11. 11. Fresh PUR-foam15202530CFC11HCFC141bHFC245HFC365HFO CP Water(CO2)1719 20 211921231921 22 23212327Blowing agent -> “green” directionLambda values, PUR foam with steel facings [mW/mK].Fresh PUR-foamAged PUR-foamInsulation properties of PUR foam withdifferent blowing agents.
  12. 12. Thickness of insulation in orderto achieve same U-factor*:Why PUR Materials for the Construction Industry?There is onlyone cleverway to builda passivehouse150 m2 house with 400 [mm] MW gives approx. 7 m2extra living room using 270 [mm] PUR![W/m²K]*U-factor: ability of a building element to conduct heatThicknessLambda, foam
  13. 13. Why PUR as technical insulation?Insulates better.Good mechanical properties.Sustainable.Durable.Resistant to chemicals.Resistant to fungis, bacterias and moulds.Temperature stable.”No” water uptake.Easy to form and work in.”FunctionalInsulation”
  14. 14. Technical insulation: industrial pipes.
  15. 15. Technical insulation: district heating pipes.
  16. 16. Technical insulation:commercial refrigerators/freezers.
  17. 17. Technical insulation: spray.
  18. 18. Technical insulation: sandwich panels.
  19. 19. Technical insulation: sandwich panels.
  20. 20. PUR Boards for Thermal InsulationRenovation
  21. 21. PUR Elements for Thermal InsulationNew Roof and Wall InsulationConcrete sandwich walls, 300 [mm] PIR, U-value 0,08 [W/m2K]
  22. 22. PUR Rigid Foam Cores/Integral skinWindow frames
  23. 23. Sustainable PUR foams – long term project.0510152025ConventionalFoamMicrocellularSystems + lowk-factor BAAdvanced Ins.TechnologyThermalConductivity[mW/m*K]Project Portfolio Energy Saving PUR Solutions
  24. 24. The Knudsen-Effect100101 1000 / 1 10 100 1000[µm][nm]05101520253035400 0 0 1 10 100 1000k-factor[mW/K/m]cell size [mm]0.001 0.01 0.1 1 10 100 1000cell size [µm]N2CO2Advanced Insulation Technologies”Nano foams”
  25. 25. Project Status
  26. 26. Thank you!
  27. 27. Forward-Looking StatementsThis presentation may contain forward-looking statements based on currentassumptions and forecasts made by Bayer Group or subgroup management.Various known and unknown risks, uncertainties and other factors could lead tomaterial differences between the actual future results, financial situation,development or performance of the company and the estimates given here.These factors include those discussed in Bayer’s public reports which areavailable on the Bayer website at www.bayer.com.The company assumes no liability whatsoever to update these forward-lookingstatements or to conform them to future events or developments.

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