Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

US, Polish researchers develop technology for creation of antiwear polymer films

30.03.2006


When Michael Furey, professor of mechanical and biomedical engineering, at Virginia Tech, met Czeslaw Kajdas, then with the Radom Technical University in Poland, at a conference in Europe in 1981, they had differing views on how to form polymer films on surfaces to reduce wear. The result of their eventual collaboration has been fundamental discoveries in surface chemistry and dozens of compounds that reduced wear in metals, advanced alloys, and ceramics. These include ashless antiwear additives for fuels, such as for diesel, jet, and two-cycle gasoline fuels; lubricants for automotive and industrial applications; and a variety of applications in which environmental concerns are important.



At the 231st American Chemical Society National Meeting in Atlanta on March 26-30, Furey will discuss the novel concept of molecular design to create additives and compounds which will reduce wear in liquid and vapor phase applications.

Tribopolymerization, developed by Furey and Kajdas, involves continuous formation of thin polymeric films on rubbing surfaces to reduce wear and surface damage. The films are self-replenishing. Specifically selected small molecules (monomers) adsorb on surfaces. Under the action of sliding contact, thin protective polymer films will form.


Furey first demonstrated the concept more than 30 years ago. At the 1981 conference, Kajdas expressed interest in Furey’s idea of surface polymerization. "For condensation-type monomers, I felt that the high surface temperatures produced by friction could initiate polymerization. Kajdas, who was interested in another class of monomers, addition-type, suggested that the emission of low-energy electrons could initiate surface polymerization," Furey recalls. "These were not competing theories, only our ideas as to what was most important for two classes of monomers."

The 1981 military crackdown in Poland sealed off the country and stalled the collaboration, but in 1986, after Kajdas had moved to the Warsaw University of Technology Institute of Chemistry at Plock, he came to Virginia Tech as a visiting professor and then returned every summer. Kajdas’ Ph.D. student, Roman Kempinski, also came to Virginia Tech as a Fulbright Scholar. The international team’s first research was funded by the U.S. Department of Energy’s Energy-Related Inventions Program, and subsequently by the National Science Foundation (NSF).

"As a result of this research, we have reached a better understanding of the fundamental process of tribopolymerization, including the action of low- energy electrons emitted from rubbing surfaces," said Furey. "With NSF funding, we were able to design, build, and use an advanced system for measuring such particles (a Ph.D. thesis by Gus Molina)."

Another result was several effective additives for reducing wear with metals, alloys, and ceramics in both liquid and vapor phase applications. These ashless compounds find uses in an enormous variety of applications. One example is a minimalist pretreatment for small engines. Putting oil in engines to test them at the factory, even when most of the oil is removed afterwards, costs thousands of dollars. Furey and Kajdas developed a lubricant that replaces 500 grams of oil with 5 grams of lubricant. It also saves the time of filling and emptying the engines with oil.

"Molecular design is a powerful approach that does not rely on the usual trial-and-error," Furey said.

Furey and Kajdas’ collaboration has resulted in many publications, presentations at scientific meetings in 12 countries, a number of Ph.D. dissertations and master’s degree theses, six patents, and the company, Tribochem International Ltd., doing business in Blacksburg, Va., and Poland. Tribochem, the Institute for Terotechnology in Radom, Poland, and the Central Laboratory of Petroleum in Warsaw recently agreed to collaborate to move the discoveries and knowledge into practical and industrial applications.

Furey will present the paper on tribochemistry and tribopolymerization (COLL 462) at 4:30 p.m., Wednesday, March 29 at the OMNI at CNN Center in the Sycamore room at the Tribology Symposium. Co-authors are Kajdas, Kempinski; Gustavo J. Molina of the School of Technology at Georgia Southern University, and Brian Vick, associate professor of mechanical engineering at Virginia Tech. Kajdas retired from the university and is now associated with the Central Laboratory of Petroleum. Kempinski is now a professor at Warsaw University of Technology Institute of Chemistry.

Susan Trulove | EurekAlert!
Further information:
http://www.vt.edu

More articles from Process Engineering:

nachricht Intelligent wheelchairs, predictive prostheses
20.12.2017 | Fraunhofer-Institut für Produktionstechnik und Automatisierung IPA

nachricht Jelly with memory – predicting the leveling of com-mercial paints
15.12.2017 | Fraunhofer-Institut für Produktionstechnik und Automatisierung IPA

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Artificial agent designs quantum experiments

On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.

We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...

Im Focus: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

Let the good tubes roll

19.01.2018 | Materials Sciences

How cancer metastasis happens: Researchers reveal a key mechanism

19.01.2018 | Health and Medicine

Meteoritic stardust unlocks timing of supernova dust formation

19.01.2018 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>