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 Diamond watch components
18.06.2018 | Schweizerischer Nationalfonds SNF

nachricht Quick and safe laser joining of steel-aluminum mixed connections
05.06.2018 | Laser Zentrum Hannover e.V.

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Better model of water under extreme conditions could aid understanding of Earth's mantle

21.06.2018 | Earth Sciences

What are the effects of coral reef marine protected areas?

21.06.2018 | Life Sciences

The Janus head of the South Asian monsoon

21.06.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>