Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

DuPont™ Vamac® Ultra HT raises the temperature bar in AEM performance for turbo hose and air ducts

03.07.2012
A highlight of the DuPont Performance Polymers exhibit at DKT 2012 was DuPont™ Vamac® Ultra HT ethylene acrylic elastomer (AEM), the latest in the Vamac® Ultra family of high performance elastomers offering enhanced properties that extend significantly beyond the performance of standard AEM.

Vamac® Ultra HT achieves continuous heat resistance up to 180°C, with peaks to 200 °C, which, coupled with improved mechanical properties, identify it as an ideal candidate for demanding automotive applications such as turbo hoses and air ducts.


Image: DuPont
DuPont™ Vamac® Ultra HT ethylene acrylic elastomer (AEM) offers continuous heat resistance up to 180°C, with peaks to 200°C, higher flex fatigue resistance and enhanced mechanical properties, better low temperature flexibility and superior acid resistance in blow-by gas and exhaust gas recirculation environments than standard AEM, making it an ideal candidate for automotive turbo hoses and air ducts.

“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. Its dynamic performance and superior thermal resistance mark a further step in the development of the Vamac® product range, while processors will continue to benefit from an accommodating polymer for their formulations,” said Patrick Cazuc, Automotive Director Europe, DuPont Performance Polymers.

The latest manufacturing technology for Vamac® enables the polymerization of AEM grades with optimized structure and chemical composition, resulting in significant improvements over existing standard Vamac® elastomers.

Higher viscosity AEM grades, marketed as Vamac® Ultra, were first introduced in 2006 and became rapidly accepted by the automotive market because they provided a true step-change improvement in AEM processing, performance and customer value in applications where excellent resistance to heat, combined with exposure to engine and transmission lubricants or acids from exhaust gas recirculation and closed crankcase ventilation systems, are required.

The recent introduction of Vamac® Ultra HT has taken AEM performance a step higher in long-term heat ageing properties. 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.
Results of the study are the subject of 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 (technical paper available on request from DuPont).

Vamac® Ultra HT delivers enhanced mechanical properties at room temperature and high temperature such as hot elongation, hot tear strength and higher flex fatigue resistance, better low temperature flexibility and superior acid resistance in blow-by gas and exhaust gas recirculation environments. Its higher viscosity also improves processing versus standard AEM grades, including better green strength and scorch resistance for extrusion processes.
Vamac® Ultra HT is one of a series of new generation AEM polymers from DuPont Performance Polymers named Vamac® Ultra that help automotive OEMs meet current Euro 5 and forthcoming Euro 6 emission regulations by meeting more severe technical requirements in existing and new seals, gaskets, hoses and other underhood components. As a result, Vamac® Ultra grades are being adopted in an increasing number of commercial programmes with major auto manufacturers, including Audi, BMW, Daimler, Fiat, Ford, GM, Renault and VW.

DuPont offers more than 100 materials and product families for the global automotive industry. Through its global application development network, DuPont Automotive is committed to collaborating with customers throughout the value chain to develop new products, materials, components and systems that help reduce dependence on fossil fuels and protect people and the environment. For more information, visit automotive.dupont.com.

DuPont Performance Polymers is committed to working with customers throughout the world to develop new products, components and systems that help reduce dependence on fossil fuels and protect people and the environment. With more than 40 manufacturing, development and research centers throughout the world, DuPont Performance Polymers uses the industry’s broadest portfolio of plastics, elastomers, renewably sourced polymers, filaments and high-performance parts and shapes to deliver cost-effective solutions to customers in aerospace, automotive, consumer, electrical, electronic, industrial, sporting goods and other diversified industries.

DuPont (NYSE: DD) has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials, and services since 1802. The company believes that by collaborating with customers, governments, NGOs, and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels, and protecting life and the environment. For additional information about DuPont and its commitment to inclusive innovation, please visit www.dupont.com.

The DuPont Oval Logo, DuPont, The miracles of science and all product names denoted with ® are trademarks or registered trademarks of E.I. Du Pont de Nemours and Company or its affiliates.

PP-EU-dkt-2012-08

DuPont press contact
Rémi Daneyrole
Tel.: +41 (0)22 717 54 19
Fax: +41 (0)22 580 22 45
remi.daneyrole@dupont.com

Rémi Daneyrole | DuPont
Further information:
http://www.dupont.com

More articles from Trade Fair News:

nachricht Fraunhofer HHI at Mobile World Congress with VR and 5G technologies
24.02.2017 | Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI

nachricht MWC 2017: 5G Capital Berlin
24.02.2017 | FOKUS - Fraunhofer-Institut für Offene Kommunikationssysteme

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>