PU elastic carpet in different types
Definition:
These types of carpets are polyurethane type and due to their high vibration absorption capability, they are usually used in residential areas and sensitive and very sensitive areas. It has the highest technical specifications.
Polyurethane carpets produced by this company have very effective performance at very low frequency
مشخصات فنی
| Row | Material properties | Measured range | Test methods | comment |
| 1 | Tensile stress at break | 0.4-0.5 N/mm2 | DIN EN ISO 527-3/5/100 | Minimum Value |
| 2 | Water absorption | 10-15% | DIN 45673 | Minimum value |
| 3 | Freeze-thaw resistance | 10-20% | DIN 45673 | Minimum value |
| 4 | Dynamic modulus | 0.015-0.03 N/mm3 | DIN 45673 | Minimum value |
| 5 | Static modulus | 0.003-0.01 N/mm3 | DIN 45673 | Minimum value |
| 6 | Horizontal static modulus | 0.002-0.007 N/mm3 | DIN 45673 | Minimum value |
| 7 | Mechanical loss factor | 0.2-0.3 | DIN 53513 | Depending on frequency, load and amplitude (reference value) |
| 8 | Elongation at break | 150-240% | DIN EN ISO 527-3/5/100 | Minimum value |
| 9 | Tear strength | 10-16% | DIN 53515 | Minimum value |
| 10 | Creep | 18-25% | DIN 45673 | Load 5 N, bottom surface |
| 11 | Compression set | 3-5.7% | EN ISO 1856 | 50 %, 23 °C, 70 h, 30 minutes after unloading |
| 12 | Density (D) | 200-205 (kg/m3) | – | – |
| 13 | Ageing resistance | 8-15% | DIN 45673 | Minimum value |
| 14 | Volume electrical resistance | 1.5×1011-1.9×1011 | ASTM D257 | – |
| 15 | Operating temperature | -30 up to 70 | – | Short term higher temperatures possible |
| 16 | Fire resistance | B2 | DIN 4102 EN ISO 11925-2 | Normal test passed |
One-third octave spectrum reduces carpet vibration
* The diagram above is the seismic output in the Mashhad Metro Line 3 project regarding the performance of the polyurethane carpet.