Material Properties
Sylodyn® NF is a versatile material that finds application in a wide range of scenarios, including railway line vibration protection, impact noise isolation, structural bearing, and noise reduction within buildings.
- Pronounced spring characteristics.
- Closed cellular pore structure.
- Suitable for very high loads.
Features
Sylodyn® NF is by Getzner used for vibration and noise protection, as well as various other applications.
- High dynamic load capacity.
- Load peaks up to 24 N/mm2.
- Very low amplitude dependence.
- Stiffening factor (Cdyn/Cstat) from 1.15 to 1.40.
- Proven long-term behaviour.
- High fatigue strength.
- Ability to provide customer-specific modifications.
Sylodyn® NF Datasheet
Download the Anti-Vibration Polyurethane datasheet for Sylodyn® NF.
File size: 138kb
Range of use |
Compressive load |
Deformation |
|---|---|---|
| shape factor-dependent, values apply to shape factor q = 3 | ||
| Static range of use (static loads) | up to 1.50 N/mm² | approx. 11 % |
| Dynamic range of use (static plus dynamic loads) | up to 2.00 N/mm² | approx. 16 % |
| Load peaks (occasional, brief loads) | up to 6.8 N/mm² | approx. 30 % |
Specifications and tabular date for the Sylodyn® NF
All information and data for Sylodyn® NF is based on our current knowledge. The data can be applied for calculations and as guidelines, are subject to typical manufacturing tolerances and are not guaranteed. Material properties as well as their tolerances can vary depending on type of application or use and are available on request. 1. Measurement / evaluation in accordance with the relevant standard. 2. The measurement is performed on a density-dependent basis with differing test parameters. 3. Values apply to shape factor q = 3.
Material properties |
Test methods |
Comment |
|
|---|---|---|---|
| Mechanical loss factor | 0.09 | DIN 53513¹ | temperature-, frequency-, specific load- and amplitude-dependent |
| Rebound resilience | 70% | EN ISO 8307¹ | |
| Compression hardness³ | 1.34 N/mm² | EN ISO 844¹ | at 10 % linear compression, 3rd load cycle |
| Compression set² | < 5 % | EN ISO 1856¹ | 50 % deformation, 23 °C, 72 h, 30 min after removal of load |
| Static modulus of elasticity³ | 11.99 N/mm² | at specific load of 1.50 N/mm² | |
| Dynamic modulus of elasticity³ | 14.94 N/mm² | DIN 53513¹ | at specific load of 1.50 N/mm², 10 Hz |
| Static shear modulus | 0.99 N/mm² | DIN ISO 1827¹ | at a pretension of 1.50 N/mm² |
| Dynamic shear modulus | 1.48 N/mm² | DIN ISO 1827¹ | at a pretension of 1.50 N/mm², 10 Hz |
| Min. tensile stress at rupture | 5.00 N/mm² | EN ISO 527-3/5/500¹ | |
| Min. tensile elongation at rupture | 300 % | EN ISO 527-3/5/500¹ | |
| Abrasion² | ≤ 200 mm³ | DIN ISO 4649¹ | load 10 N |
| Coefficient of friction (steel) | 0.7 | EN ISO 8295¹ | dry, static friction |
| Coefficient of friction (concrete) | 0.7 | EN ISO 8295¹ | dry, static friction |
| Coefficient of friction (wood) | 0.5 | EN ISO 8295¹ | dry, static friction |
| Specific volume resistance | > 1010 Ω · cm | DIN EN 62631-3-1¹ | dry |
| Thermal conductivity | 0.15 W/(mK) | DIN EN 12667 | |
| Temperature range | -30 °C to 70 °C | short term higher temperatures possible | |
| Flammability | class E | EN ISO 11925-2 | normal combustible, EN 13501-1 |
Load deflection curve
Quasi-static load deflection curve for different bearing thicknesses. Quasi-static load deflection curve measured with a loading rate of 0.15 N/mm²/s.
Testing between flat and plane-parallel steel plates, recording of 3rd load, with filtered starting range in accordance with ISO 844, testing at room temperature.
Parameter: thickness of the Sylodyn® bearing.
Shape factor q = 3
Modulus of elasticity
Load dependency of the static and dynamic modulus of elasticity. Quasi-static modulus of elasticity as tangential modulus from the load deflection curve. Dynamic modulus of elasticity from sinusoidal excitation with a velocity level of 100 dBv re. 5 · 10-8 m/s corresponding to a vibration amplitude of 0.22 mm at 10 Hz and 0.08 mm at 30 Hz.
Measurement in accordance with DIN 53513.
Parameter: frequency
Shape factor q = 3
Natural frequencies
Natural frequencies for different bearing thicknesses. Natural frequencies of a vibratory system with a single degree of free-dome, consisting of a mass and an elastic bearing made of Sylodyn® NF on a rigid surface.
Parameter: thickness of the Sylodyn® bearing
Shape factor q = 3
Vibration isolation efficiency
Factor of transmission and isolation rate. Reduction of the transmitted mechanical vibrations by implementation of an elastic bearing consisting of Sylodyn® NF based on a stiff subgrade.
Parameter: factor of transmission in dB, isolation rate in %
Sylodyn® product range
