Extruded board (XPS board) is a rigid foamed plastic board made of polystyrene resin and extruded at high temperature. Due to its excellent insulation, compressive strength, and moisture resistance, it is widely used in fields such as construction, transportation, and cold chain. The following is an analysis of the main uses and advantages of extruded polystyrene boards.

1、 Construction field: the main force of thermal insulation and heat preservation

Wall insulation

Used for external wall insulation systems (thin plastering, decorative integrated panels, etc.), effectively reducing heat loss and lowering building energy consumption.

The cold bridge phenomenon can be prevented in the northern cold regions, while in the southern regions, it can block the incoming high temperature from the outside.

Roof and floor insulation

Flat roof insulation layer: with high compressive strength (150-500kPa), it can withstand personnel trampling or equipment loads.

Floor heating insulation layer: laid under the floor heating pipeline to reduce heat loss to the floor below.

Basement moisture-proof

The closed cell rate is over 99%, and long-term soaking can still maintain a low water absorption rate (<1%), avoiding basement moisture and mold.

2、 Transportation Engineering: Stability Guarantee of Roadbed and Pavement

High speed railway and highway subgrade

Laying at the base of the road in permafrost areas to block the capillary rise of groundwater and prevent frost heave deformation (such as in the application of the Qinghai Tibet Railway).

The lightweight (density 30-40kg/m ³) characteristic can reduce the load on soft soil foundation.

Airport runway

The high compressive strength (≥ 700kPa) version is used for the runway foundation layer to disperse the impact force of aircraft takeoff and landing.

3、 Cold chain logistics: the guardian of temperature control

Cold storage construction

The walls and ceiling of the cold storage are made of extruded polystyrene board, which maintains stable insulation performance even in an environment of -30 ℃.

The moisture-proof property is better than EPS foam board to prevent condensate from eroding the reservoir body.

Refrigerated truck compartment

As a sandwich material, it reduces the weight of the vehicle while ensuring insulation in low-temperature environments.

4、 Other special purposes

Decorative lines and advertising boards

It can be carved into European architectural decorative lines or used as a lightweight advertising substrate.

Floating platform

The dock floating bridge and water park facilities utilize their waterproof buoyancy characteristics.

5、 The four core advantages of extruded polystyrene board

Strong insulation: The thermal conductivity is as low as 0.028W/(m · K), and the insulation effect is 1.5 times that of EPS board.

High strength compressive strength: The ordinary type has a compressive strength of ≥ 200kPa, while the heavy-duty type can reach 800kPa.

Hydrophobic and moisture-proof: It hardly absorbs water and does not deform in long-term humid environments.

Environmentally friendly and durable: no fluorine foam, with a service life of up to 50 years.

Conclusion

From energy-efficient buildings to transportation infrastructure, from cold chain logistics to decorative engineering, extruded polystyrene board has become an indispensable material in modern engineering due to its three in one characteristics of "insulation, compression resistance, and moisture resistance". When making a purchase, attention should be paid to density, compressive strength, and fire rating (B1 flame retardant is recommended) to ensure a balance between safety and performance.

If you need to know the technical parameters of extruded board construction, please feel free to consult professional suppliers!