Key Questions to Ask When Ordering xps foam board extrusion line

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What are the remarkable characteristics of Feininger 2 Inch XPS Foam Board?

High compression strength (100-1000KPA).

Excellent thermal insulation and long-lasting (thermal conductivity up to 0.028W/M.K).

Hydrophobic and moistureproof (water absorption < 1%).

Good dimensional stability and weather resistance (life span 30-50 years).

How is the company ensuring reliable thermal conductivity in its XPS Foam Boards?

The thermal conductivity factors include the bubble wall, gas in the bubble, radiation delivery rate of the bubble wall and the bubble, and the convective thermal conductivity of the gas in the bubble. The gas in the bubble accounts for the largest proportion, about 60%.

How does the closed-cell rate impact the performance of XPS Foam Boards?

A high closed-cell rate of more than 99% assures superior insulation performance compared to an 80% closed-cell rate in foamed polyurethane.

What are the density requirements for different applications of 2 Inch XPS Foam Boards?

Density varies based on application: floor heating (35KG/m³), wall insulation (25KG/m³), and filling (45KG/m³).

What is the heat preservation effect of XPS Foam Boards?

A 2cm extruded foam board can provide the same insulation as 100cm of concrete or 120cm of cement perlite.

What factors affect the compressive strength of XPS Foam Boards?

Compressive strength is proportional to the density. It ranges from 100KPA to 1000KPA depending on various parameters. Higher-quality boards with a density of 35KG/m³ can achieve a compressive strength of 250-300KPA.

How significant is the water absorption property of the extruded board?

Water absorption is less than 1.5%, ensuring robustness against moisture and decomposition.

How does the density relate to the compressive strength in XPS Foam Boards?

Under similar conditions, compressive strength is proportional to density within a defined range.

How are XPS Foam Boards evaluated for flammability?

Flammability is classified into B1 (non-flammable, oxygen index > 30%), B2 (flammable, oxygen index > 26%), and B3.

What are the environmental considerations for XPS Foam Boards?

Environmental impact depends on raw materials and flame retardants used. Recycled materials may contain harmful substances like benzene and styrene, and HBCD flame retardants are not environmentally friendly.

What is the "ripening" process for XPS Foam Boards?

Ripening refers to the change in long-term thermal resistance value of the boards over time.

What are the specifications for various uses of the extruded board?

Standard sizes include floor heating specifications at 1670*600*20mm and building insulation specifications at 2000*600*30mm.

Why is the width of the extruded board typically 600mm?

Continuous extrusion limits width but recent advancements have enabled widths of up to 1200mm.

How stable are XPS Foam Boards dimensionally?

The dimensional stability is excellent, maintaining within 1% at temperatures ranging from 70°C to -20°C.

What are the freeze-thaw cycle requirements for extruded panels?

After 300 freeze-thaw cycles, compressive strength should not reduce by more than 10%, and long-term water absorption for building insulation should not exceed 2%.

What are the key properties of XPS Foam Boards?

• Physical properties: apparent density, true density, dimensional stability, water absorption, water vapor permeability, freeze-thaw cycle.

• Mechanical properties: compression, bending, shear strength, compressive creep, tensile strength.

• Thermal properties: thermal conductivity, thermal resistance, long-term thermal resistance.

What factors relate to the thermal conductivity of XPS Foam Boards?

Raw material properties and production process affect cellular uniformity and foaming agent performance, reducing thermal conductivity. Density's thermal conductivity is inversely proportional to a certain extent, increasing beyond the optimal density.

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