摘要：

Elastomer compounds used for tire treads are filler-reinforced composite materials of which the dynamic properties can be adjusted over a relatively broad range by modification of the polymer-filler interaction. The replacement of carbon black as reinforcing filler by a silica-silane system, for instance allows to reduce the low-frequency hysteresis of the rubber, which results in a reduction of the Rolling Resistance when applied in tire treads. Selective changes in the structure of the coupling agents, e.g. the number of alkoxy groups reactive towards silanol groups on the surface of the silica filler, the length of the linker between filler and polymer, or the bond strength between coupling agent and polymer, lead to changes in the microstructure of the silica-polymer interface. These determine the dynamic properties of the material, thus rolling resistance as well as wet grip of a tire tread. It is demonstrated that these changes in the silane structure lead to characteristic changes in the dynamic properties of the composites. Silanes with just one ethoxy group instead of three, as in the commonly used silanes, decrease the hysteresis at high temperatures: representative for Rolling Resistance, and increase it at low temperatures: representative for Wet Skid Resistance. A longer linker decreases the hysteresis at elevated temperatures, thus a lower energy loss and consequent Rolling Resistance at the service temperatures of running tires. When the silane molecule cannot chemically link to the polymer, the dynamic as well as the mechanical properties deteriorate. In this presentation, the effect of specific changes in the structure of the silane coupling agents are discussed on the macroscopic dynamic properties of silica-reinforced tire treads as indicators for tire performance.

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个人简介：

Current position
1995–2000: Part-time professor of Rubber Technology at the Technical University of Twente, Enschede, the Netherlands;
2000–present:Full-time professor of Elastomer Technology and Engineering at the Technical University of Twente.

Previous employment record
1975–1977: Military service;
1977–1980: General Electric Plastics, Bergen op Zoom, the Netherlands: Manager “Application Engineering Department” for Noryl PPO, Lexan PC and Valox PBT;   
1981–1999: DSM Elastomers BV, Geleen, the Netherlands. Various positions within the EPDM-rubber R&D:
Polymer Development Specialist;
Director Research and Application Technology;
R&D Coordinator between the Netherlands–USA–Japan–Brazil.

Education
1965–1970: Delft University of Technology: Masters degree in Biochemistry with highest distinction (cum laude);
1970–1974: Delft University of Technology: Ph.D. degree on “A Flow Birefringence Study of Polymer Conformation” with Prof. Dr. H. Janeschitz-Kriegl;
1974–1975: Post-doctoral research associate at the Rheology Research Center of the University of Wisconsin, Madison, Wis. USA, with Prof. Dr. J.D. Ferry.

Awards
1999: Annual technical award of the IISRP: Institute of Synthetic Rubber Producers;
2000: Best Paper–Original Contribution award of the 157th meeting of the Rubber Division of the American Chemical Society, Dallas, Texas, April 2000.
2005/2006: Gold medal of the International Rubber Conference Organisation (IRCO)
2010: 2010 George Stafford Whitby Award of the American Chemical Society Rubber Division
2010: VKRT (Vereniging voor Kunststof en Rubber Technologen) lustrum-award for contribution to the Dutch Rubber Industry and Academia
2011: Dutch Master in Materials 2011, Bond voor Materialenkennis

Hobbies
Playing piano, jogging, gardening.

Membership of professional organisations

1975–present: Member of the Sigma Xi, The Scientific Research Society, USA;
1982–present: Member of the American Chemical Society, Rubber Division;
1982–present: Member of the Dutch Association of Rubber and Plastics Technologists VKRT;
1986–present: Member of the Board of the International Rubber Conference Organizing Committee, on behalf of  the Netherlands;
1986–2006: Member of the International Institute of Synthetic Rubber producers on behalf of DSM Elastomers, the Netherlands;
1990-1994: Chairman of European Technical Committee;
1999–2006: Board Member of the Netherlands Institute of Materials (Bond voor Materialenkennis);
2002–2011: Management Team of the Dutch Polymer Institute; Scientific Chairman for the Technology Area “Rubber Technology”;
2000–present: Board Member of the Dutch Natural Rubber Foundation.

Research subjects
Mechanisms of Rubber Reinforcement
Crosslinking Chemistry
Rubber Recycling/reuse
Thermoplastic Elastomers