Extruded Insulation Boards: From Core Characteristics to Application Scenarios, Unraveling the Insulation Advantages of “Closed-Cell Foam + Rigid Base Material”
I. Core Characteristics of Extruded Insulation Boards
Exceptional and Long-Lasting Insulation Performance
Due to its “closed-cell bubble” structure, air or other gases are trapped within independent bubbles, making it difficult for convective heat exchange to occur. As a result, its insulation and heat-blocking performance far surpasses that of ordinary foam boards. Additionally, this structure exhibits strong stability, unlike some insulation materials that may experience bubble damage or reduced insulation performance over time. Its service life can span several decades.
Stable Physical Properties
As a “foamed rigid plastic board,” it not only has high hardness but also exhibits compression resistance and impact resistance, capable of withstanding certain weights (e.g., when laid on building floors, it can withstand subsequent construction loads). It also has excellent moisture resistance, as the closed bubbles do not easily absorb water, making it suitable for use in humid environments (such as basements or roofs).
II. The relationship between production logic and material advantages
Raw materials and process: Using polystyrene resin as the core material, polymers are added and the mixture is “heated and extruded”—this process allows the material to form uniform closed bubbles under high temperature and pressure, ensuring the density of the board while reducing thermal conductivity through the bubble structure (the lower the thermal conductivity, the better the insulation performance).
Simple Comparison with Other Insulation Materials:
Compared to traditional expanded polystyrene boards (EPS boards), extruded boards have more closed bubbles and higher density, resulting in superior insulation and compressive strength; however, they are relatively more expensive and are suitable for scenarios with high requirements for insulation and structural strength (such as exterior wall insulation and underfloor heating insulation layers).
III. Main application scenarios
Based on its characteristics of “durable insulation, compression resistance, and moisture resistance,”
common applications include:
Building exterior wall insulation systems (reducing heat exchange between indoor and outdoor environments, saving air conditioning/heating energy consumption);
Underfloor heating insulation layers (installed beneath the floor to reduce heat transfer to lower floors, improving underfloor heating efficiency);
Roof insulation and waterproofing combined layer (provides both thermal insulation and prevents water penetration);
Cold chain logistics and cold storage construction (maintains a low-temperature environment and reduces cold air loss).
In summary, the core competitiveness of extruded insulation boards stems from the combination of a “closed-cell structure” and a “rigid plastic substrate” — the former addresses insulation and moisture resistance, while the latter addresses strength and durability, making it a commonly used insulation material in construction, cold chain logistics, and other fields.
