Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Primerless bonding of DuPont™ Zytel® nylon and DuPont™ Vamac® AEM for integrated electronic connector gasket

18.10.2011
A new electronic connector gasket from Dana Corporation of Neu-Ulm, Germany, is one of the first applications to benefit from patented 2K molding technology for the production of assemblies combining DuPont™ Vamac® ethylene acrylic elastomer (AEM) with DuPont™ Zytel® nylon resin.

The multi-shot technology, licensed solely to DuPont by Evonik Degussa GmbH, allows the direct bonding of rubber and plastics and simplifies assembly by eliminating the need for primer or anchoring. The upshot of the new technology for first tier suppliers of integrated automotive components, such as Dana Corporation, is the opportunity for greater cost and processing efficiencies as well as enhanced part quality and reliability, even after heat and automotive fluid aging.


Photo: Courtesy of DANA corporation
A new electronic connector gasket from Dana integrates wiring harness, power connectors and DuPont™ Zytel® and Vamac® polymers in a primerless bond, reducing assembly time by 30-40% and component cost by 25-40% compared with conventional gaskets and separate wiring harnesses.


Photo: Courtesy of DANA corporation
This detail of the new Dana integrated electronic connector gasket shows elastomeric sealing surfaces of Vamac® AEM (shown in blue) bonded permanently to rigid structural parts of Zytel® PA66 nylon resin (shown in black) to provide oil and high temperature resistance, while eliminating leak paths.

In the case of the highly integrated connector gasket, which includes both a wiring harness and power connectors, its seal made of Vamac® AEM is permanently bonded to the gasket body of Zytel® nylon to provide long term heat and oil resistance and to eliminate leakages. The particular grade of Zytel® nylon 6,6 specified for the gasket body combines excellent mechanical properties with enhanced heat aging performance, hydrolysis resistance and improved oil resistance. For its part, when used in seals, Vamac® AEM provides high sealing performance, low permeability and excellent resistance to oil and grease. Moreover, seals made of Vamac® AEM are highly resistant to compression set and maintains long-term sealing force, meaning that the gasket can be disassembled and reassembled again for reuse.

“The greatest challenge was to seal metals, thermoplastics and rubber materials at the open window connector point. We worked closely with DuPont to modify the polymers and develop new process technology to create optimal adhesion between Zytel® nylon and Vamac® AEM throughout the gasket,” comments Berthold Schiele, sales engineer and project manager for plastic systems at Dana. “The adhesion of Vamac® AEM to Zytel® nylon exceeded our expectations. We subjected the bonded materials to a special pull force test, but the extra force necessary to separate the two far exceeded the actual operating conditions the gasket will meet in long-term service. Consequently, we can see considerable potential application for this technology and materials combination in the future.”

The Dana gasket is the first to integrate wiring harness, all fuel injector, plug, sensor and actuator/solenoid power connections. The result is a highly-integrated unit, complete with pre-assembled wiring harness that can reduce assembly time by 30-40%, and eliminates the need to machine cylinder head holes, feed cables or control wiring direction. Thus, accurate positioning of all power connections is assured, while yielding a 25-40% component cost saving compared with conventional gaskets and separate wiring harnesses.

In addition to undergoing a 150,000 mile in-vehicle endurance trial, the electronic connector gasket has met or exceeded all industry standard tests, including heat aging, and exposure to internal engine heat, oil and dynamic operating conditions. Its subsequent adoption by major players in the off-highway, construction, agricultural, stationary and marine diesel engine markets has been rapid. The first commercial installations in Europe took place from early 2010 in large diesel engines manufactured by MTU, Deutz, and Liebherr, following exhaustive validation and field trials.

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 a ® are registered trademarks or trademarks of E.I. du Pont de Nemours and Company or its affiliates.

PP-Fakuma-2011-19 Press contact (UK, Benelux, Scandinavia)

Andrew Wilkins
Tel.: +44 (0)1353 663350
Fax: +44 (0)1353 663350
Email: dupont@plasticspr.co.uk
DuPont press contact
Rémi Daneyrole
Tel.: +41 (0)22 717 54 19
Fax: +41 (0)22 580 22 45

Ursula Herrmann | Konsens Public Relations
Further information:
http://www.dupont.com

More articles from Trade Fair News:

nachricht Bug-proof communication with entangled photons
22.06.2017 | Fraunhofer-Gesellschaft

nachricht LZH at the LASER World of Photonics 2017: Light for Innovation
16.06.2017 | Laser Zentrum Hannover e.V.

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: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

Im Focus: The proton precisely weighted

What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.

To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...

Im Focus: On the way to a biological alternative

A bacterial enzyme enables reactions that open up alternatives to key industrial chemical processes

The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....

Im Focus: The 1 trillion tonne iceberg

Larsen C Ice Shelf rift finally breaks through

A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...

Im Focus: Laser-cooled ions contribute to better understanding of friction

Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision

Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Closing the Sustainability Circle: Protection of Food with Biobased Materials

21.07.2017 | Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

The technology with a feel for feelings

12.07.2017 | Event News

 
Latest News

NASA looks to solar eclipse to help understand Earth's energy system

21.07.2017 | Earth Sciences

Stanford researchers develop a new type of soft, growing robot

21.07.2017 | Power and Electrical Engineering

Vortex photons from electrons in circular motion

21.07.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>