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 180Â°C, with peaks to 200Â°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.
â€œVamac 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,â€ 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 150Â°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 â€œDuPont Vamac Ultra - Latest AEM Polymers and Developments - Meeting Demands of Modern Engine Technology,â€ 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