Polyurethane typically has a thermal conductivity between 0.017 and 0.025 W/(m·K), exhibiting excellent thermal insulation properties.
What are the typical values?
Common range: The thermal conductivity of most rigid polyurethane foams is around 0.022 to 0.024 W/(m·K), which is the most common range on the market.
Limited values: Special processes can achieve a minimum of 0.017 W/(m·K), and the maximum generally does not exceed 0.025 W/(m·K). There are slight variations between products from different manufacturers.
Why are the values different?
Density influence: This value is not fixed and mainly depends on the material density and manufacturing process. The thermal conductivity is best when the density is between 35 and 40 kg/m³.
Process differences: Spray-coated and board-type products have slightly fluctuating values due to different manufacturing processes. There are also differences between ordinary and ultra-low thermal conductivity types. How is the insulation performance?
Comparative analysis: It has one of the lowest thermal conductivity coefficients among common insulation materials, lower than rock wool and polystyrene board, resulting in significant insulation performance, equivalent to half that of extruded polystyrene board.
Application scenarios: Therefore, it is particularly suitable for cold storage, building exterior walls, and pipe insulation, ensuring long-term stable operation without performance degradation.
