First, the advantages of polyurethane insulation materials
Rigid polyurethane foam plastic is a good performance of insulation materials, the cell was closed cell structure, closed cell gas (Freon F11) Thermal conductivity (0.007W / mK) is extremely small, and therefore, the polyurethane insulation materials performance is lower than almost all the other insulation materials, which compared with other insulation materials, to achieve the same insulation, insulation layer thickness can be reduced 30-80%.
Two,, under the same conditions, the thermal conductivity of insulation materials commonly used to achieve the same insulating effect and when the desired thickness of insulation material comparison:
Thermal conductivity of insulation material name (W / mK) insulation layer thickness (mm)
Rigid Polyurethane Foam 0.020 50
Polystyrene Foam mineral wool 0.035 87 0.040 100
Lightweight fiberboard cork 0.050 125 0.056 140
Cork expansion silicate 0.050 125 0.150 375
Third, polyurethane insulation performance
PVC outer sheath of polyurethane foam pipe insulation project reference standard standard requirements
Density Kg / m3 CJ / T114-2000 ≥940 density Kg / m3 CJ / T114-2000 ≥60
Tensile strength Kpa CJ / T114-2000 ≥19 obturator rate% CJ / T114-2000 ≥88
Tensile rate% CJ / T114-2000 ≥350
Radial compressive strength Kpa CJ / T114-2000 ≥300 Longitudinal reversion rate% CJ / T114-2000 ≤3
Thermal conductivity W / (m? K) CJ / T114-2000 ≤0.027
Resistance to environmental stress cracking h CJ / T114-2000 F50200 water absorption% CJ / T114-2000 ≤10
Long-term mechanical properties of h CJ / T114-2000 ≥1500
Heat resistance / volume change rate% CJ / T114-2000 ≤2.4
The melt flow rate difference g / 10min CJ / T114-2000 ≤0.5
HDPE outer sheath of polyurethane foam around the outside diameter of the finished pipe insulation increased rate% CJ / T114-2000 ≤2.0
Axial shear strength Kpa EN253 1994 ≥120 00 ≤10
Long-term mechanical properties of h CJ / T114-2000 ≥1500 heat resistance / volume change% CJ / T114-2000 ≤2.4
Axial shear strength Kpa EN253 1994 ≥120
Rigid polyurethane foam plastic is a good performance of insulation materials, the cell was closed cell structure, closed cell gas (Freon F11) Thermal conductivity (0.007W / mK) is extremely small, and therefore, the polyurethane insulation materials performance is lower than almost all the other insulation materials, which compared with other insulation materials, to achieve the same insulation, insulation layer thickness can be reduced 30-80%.
Two,, under the same conditions, the thermal conductivity of insulation materials commonly used to achieve the same insulating effect and when the desired thickness of insulation material comparison:
Thermal conductivity of insulation material name (W / mK) insulation layer thickness (mm)
Rigid Polyurethane Foam 0.020 50
Polystyrene Foam mineral wool 0.035 87 0.040 100
Lightweight fiberboard cork 0.050 125 0.056 140
Cork expansion silicate 0.050 125 0.150 375
Third, polyurethane insulation performance
PVC outer sheath of polyurethane foam pipe insulation project reference standard standard requirements
Density Kg / m3 CJ / T114-2000 ≥940 density Kg / m3 CJ / T114-2000 ≥60
Tensile strength Kpa CJ / T114-2000 ≥19 obturator rate% CJ / T114-2000 ≥88
Tensile rate% CJ / T114-2000 ≥350
Radial compressive strength Kpa CJ / T114-2000 ≥300 Longitudinal reversion rate% CJ / T114-2000 ≤3
Thermal conductivity W / (m? K) CJ / T114-2000 ≤0.027
Resistance to environmental stress cracking h CJ / T114-2000 F50200 water absorption% CJ / T114-2000 ≤10
Long-term mechanical properties of h CJ / T114-2000 ≥1500
Heat resistance / volume change rate% CJ / T114-2000 ≤2.4
The melt flow rate difference g / 10min CJ / T114-2000 ≤0.5
HDPE outer sheath of polyurethane foam around the outside diameter of the finished pipe insulation increased rate% CJ / T114-2000 ≤2.0
Axial shear strength Kpa EN253 1994 ≥120 00 ≤10
Long-term mechanical properties of h CJ / T114-2000 ≥1500 heat resistance / volume change% CJ / T114-2000 ≤2.4
Axial shear strength Kpa EN253 1994 ≥120