Modified polyurethane rigid foam is made of Materials A and B are gelled by mixing and react from liquid to solid. Polyurethane rigid foam is a high-molecular thermosetting polymer and an excellent thermal insulation material. Polyurethane rigid foam has the advantages of low thermal conductivity and good thermal insulation performance.
Due to the high closed cell ratio during polyurethane foaming, when the density of rigid polyurethane foam is 35~40kg/m2, the thermal conductivity is only 0.018~0.023W/m.K. The insulation effect of 25mm thick polyurethane rigid foam is equivalent to 40mm thick EPS, 45mm thick mineral wool, 380mm thick concrete or 860mm thick ordinary bricks. Under the same insulation effect, the thickness of the insulation layer is about half that of EPS. It has the lowest thermal conductivity and the best thermal performance among all current insulation materials. Next, let’s follow Luoyang Tianjiang Chemical New Materials Co., Ltd. to learn about what advantages does modified polyurethane rigid foam have compared with other insulation materials?
1. Modified polyurethane rigid foam Strong stability
The foaming technology of polyurethane makes it have superior bonding properties. The firm combination of polyurethane rigid foam and the carrier layer is the basic prerequisite for ensuring the stability of the outer insulation layer. Luoyang Tianjiang Chemical New Materials Co., Ltd. has confirmed through repeated experiments that even under the most unfavorable temperature and humidity conditions and subjected to various combined internal and external loads such as wind, dead weight, and normal collisions, the insulation layer will not separate or fall off from the carrier layer. As well as remaining stable in wet conditions.
2. Modified polyurethane rigid foam has Better fire retardant performance
Polyurethane with flame retardant added is a flame-retardant and self-extinguishing material. Experiments by Luoyang Tianjiang Chemical New Materials Co., Ltd. have proven that modified polyurethane rigid foam materials can be carbonized when burned by fire, unlike extruded boards that will burn or flashover, so they can effectively prevent the spread of fire, especially AfterA-level system fire protection treatment, the polyurethane rigid foam material is completely sealed to form a non-combustible product.
3. Modified polyurethane rigid foam Excellent moist heat performance and good water tightness
Polyurethane hard foam has low water absorption and good resistance to water vapor permeability. The foam cells are independent and not connected to each other. The closed cell rate reaches 95% The above is a microporous foam material with a dense structure. Its surface in contact with the air is denser and less permeable to water, making it a hydrophobic material.
4. Modified polyurethane rigid foam can Tolerate the harshest local climate and its changes
No matter it is high temperature or severe cold weather, the polyurethane exterior wall insulation system will not be damaged or deformed. Luoyang Tianjiang Chemical New Materials Co., Ltd. has repeatedly conducted experiments and reached the following conclusion: when the temperature of the outer surface of the exterior wall changes drastically (the maximum temperature difference can reach 50℃), for example, after a long period of Sudden showers after prolonged exposure, or shading after exposure, will not cause damage to the surface of the exterior wall when a huge temperature difference similar to the above occurs. This avoids surface deformation caused by changes in surface temperature and cracks on the surface.
5. Modified polyurethane rigid foam High construction efficiency and good integrity
Reduces the intensity and difficulty of the project, saves project cost and construction time. On-site construction can achieve standardization and industrialization, and is easy to operate. Its construction efficiency is far higher than other insulation construction methods.
6. Modified polyurethane rigid foam The impact resistance is better than that of EPS and other insulation materials
Rigid foam polyurethane is a material with a high strength ratio (ratio of material strength and volume density). As an insulation material, its performance is better than that of foamed polystyrene, rock brocade and other materials, and it can resist external forces. The ability is also strong.
7. Modified polyurethane rigid foam Durability meets the 25-year requirement
Polyurethane insulation systemThe two constituent materials have good chemical and physical stability, giving them good durability. The porosity structure of the modified polyurethane rigid foam material is stable and basically closed pores, which not only gives it excellent thermal insulation properties, but also greatly improves the material's freeze-thaw resistance and sound absorption properties.
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