Is foam board toxic when used under underfloor heating?

1. Foam boards are non-toxic when spread under underfloor heating.

2. Generally, good quality (XPS) foam boards are non-toxic. Insulation boards made from new materials, such as white crystal boards, do not contain toxic substances such as formaldehyde and ethylbenzene. underfloor heating released.

3. A polystyrene insulation board with a thickness of 10 to 20 mm is used under electric underfloor heating. The temperature of the electric heating wire is around 60 degrees, which is non-toxic.

Detailed information:

The effects of use of foam panels:

1. Protect the main structure of the building and extend the life of the building. Since the external insulation places the couche insulating outside the structure, it reduces the pressure caused by structural deformation due to temperature changes and reduces the erosion of the structure by harmful substances present in the air and ultraviolet rays.

2. Effectively eliminate “thermal bridges”. In the past, interior insulation was used and “thermal bridges” were inevitable. However, insulating exterior walls can effectively prevent the appearance of thermal bridges and avoid condensation.

3. To improve the moisture content of the wall, a vapor barrier is usually required for internal insulation. However, the temperature permeability of external insulation materials is generally much stronger than that of the main structure. There is no need to install a vapor barrier inside the wall. Condensation will occur and the temperature of the entire wall in the structural layer will increasea, further improving the thermal insulation performance of the wall.

Baidu Encyclopedia_Polystyrene foam board

What type of insulation board is generally used for floor heating in high-rise buildings? What is its thickness and density?

It's better to have bubbles.

Floor heating foam panels have good impact resistance. The foam board is 98% filled with air, has sufficient capacity to withstand external impacts by changing and recovering its shape, and has low water absorption. Moisture affects the thermal and mechanical properties of the material, and the low water absorption of foam board helps maintain these properties.

The floor heating foam board is a white object made of expandable polystyrene beads containing a volatile liquid foaming agent, pre-expanded by heating then heated and formed into a softTHE. It has the structural characteristics of fine closed cells. .

Can foam boxes be used for underfloor heating?

1. Extruded boards, also called XPS boards, are the third generation of rigid foam insulation materials. It offers superior performance that cannot be replaced by EPS cards. Its density is 35Kg/m3 and its thickness is 4.0 cm.

2. Foam board for underfloor heating is also called polystyrene foam board and EPS board. It is mainly used for building wall and roof insulation, composite panel insulation, cold storage, air conditioning, vehicle insulation, ship insulation, etc. .Very versatile.

3. Nowadays, almost all insulation boards for underfloor heating use XPS (extruded polyethylene).Styrene plastic board), its advantages are low conthermal ductivity and high compressive strength, which is very suitable for underfloor heating environments. However, XPS panels also have good and bad qualities. The most obvious is the use of more recycled raw materials. the materials are used, the xps The worse the quality, the lower the cost.

4. To be used as an insulating material, thermal conductivity is a very important criterion. The foam board has an independent bubble structure, low thermal conductivity, generally less than 0.039 W/(m·k), low density and light weight. In addition, the surface of the foam board has low water absorption, good anti-penetration ability and can be recycled. Its degree of recycling is the highest among plastics.

5. What is commonly used now is an extruded polystyrene panel, with a density of 35 kg/m3 and a thickness of 2.0cm. Its scientific name is extruded polystyrene insulation board, manufactured by extrusion molding. foam board.

Advantages and disadvantages of polystyrene foam panels

Can be used for underfloor heating

In daily life People generally use foam boards to avoid heat loss from the ground

Because the biggest advantage of using foam boards is that the foam can be recycled and reused. Since foam is a recycled material, it is suitable for home and floor maintenance. heating In terms of cost, the cost of foam board is easy to use and affordable. In addition, because the main material of foam board is foam, so its quality is relatively light and the absorption capacity of foam is not good, which means it can avoid the absorption burden by the cement floor. That is to say, it acts as a foWaterproof function, which is beneficial and harmless to the whole project. In addition, the thermal conductivity of the foam board is relatively low, so it has super impact resistance if the interior of the floor is almost. filled with air, then this type of foam boards can achieve the rebound capacity.

Advantages——

1. Polystyrene foam panels have a low density coefficient, good impact resistance and sufficient strength. ability to change and recover from changes Form cushions external impacts;

2. It has an independent bubble structure, and damage to a small area will not affect the entire wall

3. the surface has a low water absorption rate, good anti-penetration performance, which can effectively avoid wall problems such as mildew and shedding after the wall becomes damp;

5 . . , can be recycled and its recycling degree is the highest among plastics;

6. Freon is not used in the production process;

7. is the lowest among plastic products.

Disadvantages -

1. The construction requires hanging nets, the construction process is tedious, and the construction period is long

2. It is flammable and produces toxic products; gas after combustion. Ordinary polystyrene foam insulation boards are easy to burn, and the smoke produced by combustion is toxic even if flame retardants are added. After the agent is used, the flammability can only reach Class B;< /p>

3. The resistanceof the material is weak, prone to cracking and the fall of the insulating layer is frequent;

4. . Polystyrene foam Due to its limited strength and low bearing capacity, the insulation board must be reinforced facing the bricks;

5. The quality of polystyrene foam insulation board is unstable due to the needs of the material. to be placed for a certain period of time before leaving the factory. It can only be used when ripe. If it is not fully matured, the quality will not be guaranteed, resulting in the foam board shrinking and cracking.