The testing of rock wool sandwich panels encompasses physical properties, chemical properties, and functional performance indicators. Key test parameters include combustion performance, thermal conductivity, compressive strength, peel strength, dimensional stability, environmental performance, and water absorption. Combustion performance is evaluated by measuring factors such as the heat of combustion and smoke density to determine the fire-resistance rating.
Thermal conductivity measurements reflect the panel's thermal insulation performance. Compressive strength assesses the core material's resistance to deformation under vertical loads, while peel strength tests the bond integrity between the facing layers and the core. Dimensional stability testing determines the panel's shrinkage or expansion rate; environmental performance assessments cover factors such as formaldehyde emissions and heavy metal content; and water absorption testing measures the moisture-absorbing capacity of the core material.