Heat-Retaining Material and Hear-Preservation Polyurethane Foam Sandwich Wall Panel

Component: three layers: the top material is special aluminum-zinc coated metal plate, the core material is rigid high-density Polyurethane foaming with fire-retardant treatment, and the back material is damp proof aluminum foil.

1. Hard polyurethane has low thermal conductivity and good thermal performance. When the density of rigid polyurethane is 35 ~ 40kg/m3, the thermal conductivity is only 0.018~ 0.024W/(m.k), about half of EPS, is the lowest thermal conductivity among all insulation materials.
2. Hard polyurethane has moisture proof and waterproof properties. The closed cell rate of rigid polyurethane is more than 90%, which belongs to hydrophobic material. It will not increase the thermal conductivity due to moisture absorption, and the wall will not seepage.
3, hard polyurethane fire, flame retardant, high temperature resistance. Polyurethane, when added with flame retardants, is a non-flammable self-extinguishing material with a softening point of more than 250 degrees Celsius and decomposition only at higher temperatures. In addition, when polyurethane burns, carbon deposition forms on the surface of its foam, which helps to insulate the foam underneath. Can prevent the spread of flame. Moreover, polyurethane does not produce harmful gases at high temperatures.
4. because the polyurethane sheet has very good heat insulation performance, in the same heat preservation requirements, the polyurethane board can reduce the thickness of the protective structure around the building, so as to increase the indoor using area
5. Strong anti-deformation ability, not easy to crack, stable and safe facing.
6, polyurethane material porosity structure is stable, basically closed cell structure, not only the thermal insulation performance very good, but also the frost and thaw resistance, sound absorption is good. The average life of rigid foam polyurethane insulation structure can reach more than 30 years under the conditions of normal use and maintenance. Can achieve in the life of the structure of the normal use of conditions, in dry, wet or electrochemical corrosion, as well as due to the growth of insects, fungi or algae or due to rodent damage and other external factors, are not damaged.
7. High comprehensive cost performance. Although the unit price of rigid polyurethane foam is higher than that of other traditional insulation materials, the increased cost will be offset by a significant reduction in heating and cooling costs.