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 COMPAMED 2016 connected medical devices and people
23.11.2016 | IVAM Fachverband für Mikrotechnik

nachricht Successfully transferring Industrie 4.0 into reality
21.11.2016 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI

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: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>