Why thermal insulation materials should be protected against moisture and frost?
Insulation materials are mainly used for insulation and heat insulation. Considering moisture and frost resistance, there are several physical quantities, mainly thermal conductivity (the greater the thermal conductivity, the worse the thermal insulation performance of the material. The thermal conductivity is 25 times that of air, and ice is 100 times that of air.) Antifreeze label (the number of cycles to resist freeze-thaw cycles, each material has a specific label). Because the material is in a place with high humidity, the material itself has pores (very fine pores, coarse pores, capillary pores), which will absorb water, which leads to an increase in the moisture content of the material and an increase in the thermal conductivity. The frost resistance of the corresponding material decreases as the water absorbs the material, eventually leading to material damage. Therefore, we must consider relying on moisture and frost resistance, so that the material can maintain its working performance period, that is, durability!