Walls and roofs of houses, doors and floor panels in the construction of vehicles and many other things are made of sandwich panels. So that individually designed sandwich panels have become an essential part of today’s life.

As mentioned earlier, the core and top layer materials help ensure mechanical strength. However, one process must be observed in this context, which is the ratio of the top layers to the core material.

In such a way that the core material must have such inherent strength and high compressive strength that the distance between the upper layers remains constant when the sandwich structure is bent. If this principle is not guaranteed, the bending strength of the sandwich panel will be lost immediately. Especially when these panels are used in the construction of vehicles. For this reason, the discussion of quality in this field is very important and one should be aware of its quality standards so as not to cause problems.

To know the quality level, you should check the product you want with the sandwich panel configuration. Depending on the application and place of use, required specifications and purpose of use, sandwich panel manufacturers can create the right product for you. The choice of different combinations of materials in the field of fiber-reinforced plastics is very large, and the available properties are as diverse as the choice of materials.

In general, if the insulation used in the panel is combustible, the risk of fire increases greatly. In fact, due to the impermeability of sandwich panels, it is often very difficult for firefighters to put out fires in buildings that have panels made of combustible products, which in most cases leads to the complete destruction of the building. In fact, the reason for this process is that combustible products are able to add large amounts of smoke and toxic gas to the fire.

These common insulation materials used in sandwich panels are rated according to their flammability level. We have previously mentioned the materials used and the types of sandwich panel flashing in detail, but in the following we want to describe the common and combustible materials:

Glass fiber or mineral wool is non-combustible.

It is true that fiberglass insulation is non-combustible, but it cannot resist fire like mineral wool. So that mineral wool can be used as a fire extinguisher. Of course, both materials are affordable and easy to install.

Polyurethane or polyisocyanurate is flammable.

The thermal insulation provided by polyurethane and polyisocyanurate foams can lead to rapid accumulation of heat in case of fire and may lead to its rapid expansion. Polyurethane and polyisocyanurate can ignite in the range of 343°C to 537°C and emit thick, black smoke as they burn.

Fiberglass-reinforced plastic (FRP) or glass-reinforced polyester resin is combustible.

FRP (reinforced polymer composite) material is a composite made of a polymer matrix that is reinforced with other materials such as glass and carbon. This material is often used in construction, in the aerospace industry. FRP also, like polyurethane and polyisocyanurate, ignites in the range of 343°C to 537°C and releases soot when burned, this material can melt and flow quickly and provide fuel for an existing fire.

Expanded polystyrene or polyethylene has a significant amount of flammability.

Since sandwich panels are not structural materials and are curtain materials that act as an insulating layer, they should be a factor in improving your quality and safety or comfort. Therefore, paying attention to quality is one of your priorities.

Quality has always been the most important issue in all cases that gives value to the product and its efficiency. Using a low-quality product is not only associated with wear and tear, but also wastes your money.