Resistance of Compacfoam to Benzine Diesel Sulphur dioxide Nitrogen oxide
In order to test the influence of gaseous media on the alteration of Compacfoam, test bodies (measurements: 25mm x 25mm x 50mm) were stored 30 or 60 days at a temperature of 60ºC in the media listed. Table 2 displays the designations used below of the types of exposure.
Test medium:
K_0 ambient air
K_1_2 sulphur dioxide, nitrogen dioxide
K_3 diesel fuel
K_4 carburator benzine fuel with benzene
| Test medium | Temperature [°C] | Duration of exposure [d] |
| K_0 | 20 | 0 |
| K_0 | 60 | 30 |
| K_0 | 60 | 60 |
| K_1_2 | 60 | 30 |
| K_1_2 | 60 | 60 |
| K_3 | 60 | 30 |
| K_3 | 60 | 60 |
| K_4 | 60 | 30 |
| K_4 | 60 | 60 |
After exposure the influence on the following mechanical variables was calculated:
Relative ductility
Relative strength
Relative stiffness
Mass and shape
On the basis of the trial results obtained for the different exposures no striking influence was detected on the mechanical properties of HD-EPS. The alteration of the mechanical properties detected from the exposure used as a basis is located in the scatter range of the experimental data. Hence the influence of exposure considering the characteristics of the exposure (medium, temperature and duration) can be classified as negligible.
Source: Innsbruck University, Department for Materials Technology, 2010