DKT report: DuPont showcases Vamac Ultra HT

ERJ staff report (LMH)

Nuremberg, Germany -- DuPont Performance Polymers (Booth 12-245, Hall 12) introduced its new Vamac Ultra HT ethylene acrylic elastomer (AEM) at the DKT 2012 German rubber conference.

Vamac Ultra HT has continuous heat resistance up to 180°C, with peaks to 200°C and improved mechanical properties, DuPont said, and it is targeted primarily for automotive turbo hoses and air ducts to meet today's more demanding engine environments.

“Vamac Ultra HT is designed to answer the need for high-performance hoses in modern automotive engines, and especially to meet the demand for higher temperature-resistant turbocharger hoses and ducts,” said Patrick Cazuc, automotive director - Europe, DuPont Performance Polymers.

DuPont said this latest technology for enables the polymerisation of AEM grades with optimised structure and chemical composition, resulting in significant improvements over existing standard Vamac elastomers.

A DuPont Performance Polymers study comparing ageing in air at 150°C for 5000 hours of the most commonly used acrylic rubbers for auto hoses, demonstrated that Vamac Ultra HT outperformed all other AEM, ACM and HT-ACM polymers tested in term of final mechanical properties such as absolute elongation and hardness change in these heat ageing conditions.

The results of the study will be presented in a paper “DuPont Vamac Ultra - Latest AEM Polymers and Developments - Meeting Demands of Modern Engine Technology,” given by DuPont Performance Polymers scientist Klaus Kammerer at the International Rubber Conference during the DKT rubber event in Nuremberg, Germany, on 2-5 July, 2012.

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Website of DuPont Automotive