Thermal Insulation in Sandwich Panels
Thermal conductivity value (λ) is a constant value specific to each material. The thermal conductivity value is the expression of the heat flow in Watt (W) when the temperature difference on the inner and outer surfaces of a material with a surface area of 1 m² and a thickness of 1 m is 1 Kelvin.
Thermal conductivity values of different building materials are shown in the table below. Low thermal conductivity value means high thermal insulation performance, so the expected insulation performance can be met easily with a lower insulation thickness in Mekpan Panel branded polyurethane filled sandwich panels.
Considering versatile usage and long-term performances, polyurethane (PUR) foams offer the best insulation solution.
When the temperature difference between the two parallel surfaces of a material with a thickness d (m) is 1 K (Kelvin), the heat permeability value (U) is the amount of heat that passes vertically through the surface of 1 m2 in 1 hour. Thermal permeability values are taken into account when determining the thickness of sandwich panel inner filling material.
Sound insulation in sandwich panels
The desired parameters and calculation methods for sound insulation of roof and facade coatings can be determined at the design stage.
A part of the sound wave hitting a surface is reflected, some is absorbed and the rest is transmitted. The rates of reflection, absorption and transmission depend on the shape of the surface, the sound absorption of the material and the frequency of the sound.
