Investigating the types of sandwich panels in the construction industry

There are different types of sandwich panels. The difference between polyurethane and polystyrene refers to many things such as the type of structure and their application. In such a way that each PUR/PIR sandwich panel has various applications in different industries according to their structural features. The use of polyurethane sandwich panels is very common in construction. But the polystyrene sandwich panel is one of the new building materials that is newly used in building construction. Polystyrene sandwich panel seems to be a suitable alternative to polyurethane panel.
But the difference between PUR/PIR sandwich panels is not only related to this, and they differ in several other ways. If you want to use sandwich panels in your construction projects, it is better to fully understand the difference between polyurethane and polystyrene.
The advantages of polyurethane sandwich panels over polystyrene
Polyurethane sandwich panel has many advantages over polystyrene, the most important of which are:
Insulation against moisture
Polyurethane panels are completely waterproof and practically do not absorb any water. Moisture resistance is one of the prominent features of polyurethane sandwich panels. Moisture resistance in polystyrene sandwich panel is 2 to 5% and this amount in polyurethane sandwich panel is 1.2. Therefore, it turns out that urethane sandwich panels perform better against moisture than polystyrene and have more resistance.
mechanical properties
Polyurethane panels are very strong due to their mechanical properties. Even they weigh less. Therefore, the cost of their transportation, handling, installation and cutting is low.
PUR/PIR sandwich panels are a prefabricated product. Constructing a building, both residential and industrial, with polyurethane sandwich panels produces much less construction waste. The construction process goes faster with prefabricated polyurethane panels.
Polyurethane  panels are recyclable. They are recycled using three methods (mechanical recycling, chemical recycling or incineration with energy recovery).
Polyurethane sandwich panels are much more durable and strong than polystyrene. Even these panels are used in the construction industry and the manufacture and design of car seats. These panels are somewhat thicker and may even appear wavy in some cases.
The difference between PUR/PIR sandwich panels in terms of color and appearance
Polyurethane
The color of polyurethane is yellow and occupies more volume. Its density is high and it does not catch fire by itself. It does not melt or deform at any temperature. It is resistant to moisture and water penetration and all chemicals. Also, panels made of polyurethane prevent energy loss.
The mechanical, chemical and adhesive properties of this material are excellent. It increases the resistance and strength of the building against environmental factors. It is cheap to install. There is no additional cost to install it. This material can be used in all parts of the structure or building such as doors, windows, substructure panels, roofs.
Polystyrene
Polystyrene is a brittle white material that is made from a combination of several chemicals and does not change shape. Panels made of polystyrene are mostly used in the transportation industry. Polystyrene panel is also used in the construction of the front panels of structures.
The polystyrene does not fit completely inside the panel. When polystyrene is used in the construction of panels, a part of the building may remain empty and the building is not completely covered with panels. Therefore, they are not suitable for the construction and design of false ceilings and are not used in false ceilings.
It is vulnerable to moisture and catches fire easily and is not suitable for use at temperatures above 180 degrees. Panels made of polystyrene are vulnerable to water vapor and base oil solvents, oils and solvents.
Polystyrene sticks to wooden panels. It cannot be used for doors and windows. The use of styrene in door panels, windows and roofs and building columns may be a bit expensive.
The difference between polyurethane and polystyrene in terms of application
Both PUR/PIR  panels are different in terms of application. Polyurethane is one of the best insulators in the world and is used in the manufacture of coolers, refrigerators and freezers. Polyurethane is also used as an adhesive in the industry. Many home appliances and products are designed and manufactured with three layers of polyurethane.
Polystyrene sandwich panels are used on both sides of the parquet. The size of the parquet corresponds to the size of the polystyrene sandwich panel. After gluing the sandwich panel, the polystyrene is subjected to mechanical pressure to dry the glue.
On the other hand, the polystyrene panel should not be more than 7 meters and if more panels need to be installed, the short panels can be connected to the expanded panels.
Fireproof properties of polyurethane and polystyrene sandwich panels
Chemical polyurethane does not burn naturally and is known as a fire retardant material. In a way that it can easily act as a fire extinguisher. This substance burns at a temperature of 1000 degrees Celsius. But polystyrene softens at 180 degrees Celsius and melts at 240 degrees Celsius. In terms of fire resistance, polyurethane sandwich panel is more durable than polystyrene.
The difference between PUR/PIR  panels in terms of chemical resistance
Polyurethane is much more resistant to chemicals. This is while Poly