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)
What are the factors related to the thermal conductivity of 2 Inch XPS Foam Board?
There are four factors related to the thermal conductivity of the bubble wall, the thermal conductivity of the gas in the bubble, the radiation delivery rate of the bubble wall and the bubble, and the convective thermal conductivity of the gas in the bubble.
The second factor accounts for the largest proportion, about 60%.
What is the closed-cell rate of a good 2 Inch XPS Foam Board?
More than 99%, 80% closed cell rate of foamed polyurethane (thermal insulation material).
What is the apparent density of 2 Inch XPS Foam Board (usually referred to as density)?
Floor heating varies according to the scene of use, so the density requirements are different. The density of the extruded board for floor heating is generally about 35KG/m ³, the density of the extruded board for wall insulation is about 25KG/m ³, and the density of the extruded board for filling is about 45KG/m ³.
How good is the heat preservation effect?
2cm extruded foam board can be equivalent to 100cm concrete and 120cm cement perlite.
What is the compressive strength of 2 Inch XPS Foam Board?
The compressive strength of the extruded board is proportional to the density, and the greater the density, the greater the compressive strength.
It can be controlled at 100-1000KPA according to the density and other parameters. High-quality raw materials of the extruded board 35KG/m ³, compression can achieve 250-300KPA. Due to the process, the compression strength of the extruded board is very low when it is just off the line. With the increase of time, aging will increase the compressive strength, and then tend to stabilize, generally checked after 45 days of storage.
What is the water absorption of the extruded board?
The water absorption is less than 1.5% and the moisture permeability is less than 3.5Ng/ (m.sPa), which makes the extruded board difficult to decompose and mildew.
What's the relationship between the density and the compressive strength of 2 Inch XPS Foam Board?
When other conditions are the same, the density is proportional to the compression in a certain range.
The flammability of the 2 Inch XPS Foam Board?
Different standards have different classification methods, the common combustion properties of extruded boards are B1, B2, B3, B1 is non-flammable (oxygen index is more than 30%), B2 is flammable (oxygen index is more than 26%), B3 is flammable.
How is the environmental protection of the 2 Inch XPS Foam Board?
The environmental protection of extruded board depends on raw materials and flame retardants. Recycled raw materials are easy to contain free benzene, styrene, TVOC and other harmful substances, flame retardant HBCD is not environmentally friendly.
What is the "ripening" of extruded panels?
The long-term thermal resistance of extruded panels, like other polymer foaming materials, will also change over time, a phenomenon known as "ripening".
What are the specifications of the extruded board?
Specifications for floor heating: 1670*600*20mm, 1670*600*30mm, etc.
Specifications for building thermal insulation: 2000*600*200mm, 2000*600*30mm, etc.
Why is the width of the extruded board basically 600mm?
Because the extruding board is continuously extruded, the length can be customized, and the width can only be 600mm before, but now the technological progress can do 1200mm. As for the thinnest 10mm, the thickness can be as thick as 100mm.
What is the dimensional stability of the extruded board?
The dimensional stability of the extruded plate is very good at high temperature (70 ℃) and low temperature (- 20 ℃), which can be controlled within 1%.
Experimental requirements for freeze-thaw cycle of extruded panels?
The indicators are: after 300 freeze-thaw cycles, the compressive strength of the extruded board is reduced by no more than 10% of the initial value, the long-term water absorption rate for building insulation is not more than 2%, and the long-term water absorption rate for civil engineering is not more than 5%.
What are the physical, mechanical, thermal and flammable properties of the extruded board?
Physical properties: apparent density, true density, dimensional stability, water absorption, water vapor permeability, freeze-thaw cycle.
What are the factors related to the thermal conductivity of the extruded board?
Raw material properties and production process: uniform cell, small gap and good performance of foaming agent are beneficial to reduce thermal conductivity.
apparent density: the thermal conductivity of density is inversely proportional to a certain range, and is proportional to a certain range after reaching the optimum density.
Hello, I am Tina, the proud founder of a China leading company specializing in XPS Foam Board Production Lines. With a visionary approach, I established this venture to address the evolving needs of the insulation and construction industries.
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