phenolic rigid panels
Rigid thermal-insulation panels made from phenol-formaldehyde foam, a synthetic polymer.
Phenolic rigid panels are hard panels for thermal insulation made of phenolic (phenol-formaldehyde), a synthetic polymer. The foam has low thermal conductivity and good fire resistance, although its performance depends on the product and assembly. Moisture exposure can affect its condition, and formaldehyde emissions can vary with the formulation.
The insulating panel is made from phenolic resin. It is distinct from a urea-formaldehyde panel even though formaldehyde participates in both resin systems.
The rigid foam form provides thermal resistance in a relatively thin panel. Its resin, facing, and condition affect performance; phenolic insulation is not defined by a single universal insulation rating.