Rigid polyurethane that compromises as a result of the chemical reaction, coming into existence by mixing the polyols with isocynate and auxiliary chemicals proportionately, is a material that is used more and more in today’s building sector because of both its having chemical cell structure (closed cell), and its superior physical features that changes dependant on density. We, as DECOPOL POLİÜRETAN SİSTEMLERİ A.Ş (DECOPOL POLYURETHANE SYSTEMS INC. CO.), besides indoor decoration and siding materials, make special production for shell roof systems that have the density of 600-1000 kg/m3 and that is strengthened with fiberglass.
There are also reports including our research and development studies and test results about these products.
Heat conductivity value:
In the tests done according to the standards of TS 825 thermal insulation regulations, heat conductivity value of polyurethane siding material that has the density of 600-1000 kg/m3, is measured as λ =0.0242 W/mk. This value is the lowest heat conductivity value measured compared to all materials being used for the aim of heating insulation.
Water vapor diffusion resistance (water vapor permeability)
Water vapor diffusion value means the water vapor amount that is conducted by a material from unit area in unit time under the conditions of specific temperature, humidity and thickness. Condensation/ perspiration emerging on the buildings’ walls because of the difference between indoor and outdoor temperatures, is very important in terms of comfort.
Polyurethane material we produce, that has the density of 160 kg/m3 has been tested as mü value of 100- 130. This value shows that the material has enough resistance against condensation/ perspiration emerging on walls.
Water absorption with dipping for long-time : It is certified that as a result of dipping for long- time (waiting it in water tank for 28 days) according to TS EN 12087 standards with water absorption experiments, water amount in mass of polyurethane material that has density of 160kg/m3 is between 1.10 % and 1.30 %.
Outdoor materials are exposed to significant temperature changes. So dimensional determinations shall be stabile under different atmospheric conditions. Polyurethane is not exposed to any expansion between -30*C +70*C. As from +7o*C , coefficient of thermal expansion (1/K) is measured as 147X10-6. This value shows that material is exposed to dimensional change of 2 % in width and length after +7o*C. In this case, pointing and jointing are applied.
Pressing Strength: Polyurethane is one of the materials whose pressing strength is the highest. Until a deformation emerges in the ratio of 10 % of the material’s total thickness, the material resists with the pressing strength of 516 kpa=5160 kg/strength/m2.
Flexibility Module: It is tested that Polyurethane that has the density of 160kg/m3, has the flexibility module of 3000-3500 kpa.
Resistance to fire:
Polyurethane is a material in the fire class of B1- hard to inflame. It continues to be burned with the fire source’s contacting continuously. When the fire source is removed, then the burning stops.
Resistance of freezing dissolution: It is observed that the material is not affected in any way because of the sudden and short termed temperature changes in freezing dissolution experiments made under the weather conditions between 20*C and -20*C.
Acid fume and resistance to acid:
As result of experiments made in ITU (Istanbul Technical University), it is tested that the materials resistance to acid fume and direct acid solutions. As the result of contacting acid fumes for long term (30 days), no change in material’s color or deterioration is observed. It is measured that contacting the acid solution directly, caused a 10 % of increase in mass and change in color.
ALL TECHNICAL FEATURES OF MATERIALS PRODUCED BY OUR FIRM ARE TESTED IN LABORATORIES OF THE SCIENTIFIC & TECHNOLOGICAL RESEARCH COUNCIL OF TURKEY (TUBITAK), ITU CONSTRUCTION MATERIALS and WATER SOUND FIRE AND THERMAL INSULATION ASSOCIATION (IZODER) and ACCREDITED REPORTS ARE TAKEN.