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Benecke-Kaliko analyses measuring emissions in automotives

07 Jul '15

2 min read

Benecke-Kaliko, one of the world’s leading manufacturers of surface materials for automotive interiors, has tested the bag measuring method commonly used in Asia in measuring emissions in automotive interiors.

By developing relevant specifications and a uniform test configuration, it is now also possible to achieve comparable results using this method, the company said in a statement.

The German Association of the Automotive Industry (VDA) test requires the pollutant concentrations to be measured in a test cabinet, where the samples are usually packaged in bags and then heated in an oven. The pollutant concentration in the bag is then measured. However, it is difficult to obtain comparable test results because all the car makers have their own individual test specifications for the less expensive bag method, which differ to a greater or lesser extent from the ISO 12219-2 standard.

Benecke-Kaliko has analyzed the different specifications with regard to their influence on the result.

Dr. Roland Freudenmann, global head of laboratories at Benecke-Kaliko, summarizing the results said, “In the main, the same qualitative results are obtained, that is, the same substances are identified. However, the quantitative results vary greatly, depending on the different test conditions.”

Benecke-Kaliko’s analysis showed that the preparation of the samples has the biggest influence.

According to reports, the divergence can be as much as 2,000 percent. The second parameter which has a highly significant effect on the result is the oven temperature. The VOC emissions rise by 1,000 per cent and the aldehyde emissions by 300 per cent with an oven temperature of 80°C.

The tempering period of, for instance, two hours also has to be accurately observed, because the emissions results change substantially with varying times.

Although sample conditioning has the greatest influence on the measurement result with the bag method, it is not defined at all or is only approximately defined in some specifications. (GK)

Fibre2Fashion News Desk - India