Surface-stabilized PA substitutes aluminum in high heat application

11/06/2012

A key theme at the recent Fakuma exhibition in Friedrichshafen, Germany, was metal-to-plastics replacement. One such development reported previously by PlasticsToday was the use of a heat-resistant polyamide (PA) in its first commercial application.

The resin in question is Ultramid Endure from BASF (Ludwigshafen, Germany). German processor Montaplast (Morsbach, Germany) is using the PA material Ultramid Endure D3G7 for a heat shield in the charge-air manifold used on the 4 cylinder diesel-powered automobile engine from Daimler.

In the air intake region of the charge-air manifold, which features integral exhaust gas recirculation, fresh air and hot exhaust gases are brought together. This is where high mixing temperatures and strong turbulence are encountered. Until now, an aluminum shield provided protection for the wall and a built-in sensor. Now, a ...
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