Abstract
The molecular structures, rheological properties, and friction coefficients of several new siloxane-based polymers were studied to explore their traction characteristics. The molecular structures including branch content were established by nuclear magnetic resonance spectroscopy, while the molecular mass distributions were determined by gel permeation chromatography. Density, viscosity, elastohydrodynamic film formation, and friction were investigated over a temperature range of 303-398 K. Film thickness and friction measurements were studied under the conditions that are representative of boundary, mixed, and full-film lubrication regimes, aiming at maximizing traction performance and temperature stability by simultaneous optimization of the size and content of ring-shaped branch structures. This study provides quantitative insight into the effect of siloxane molecular structure on the tribological performance for traction drive applications such as continuously variable transmissions.
| Original language | English |
|---|---|
| Pages (from-to) | 301-311 |
| Number of pages | 11 |
| Journal | Tribology Letters |
| Volume | 49 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2013 |
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Keywords
- Continuously variable transmissions (CVT)
- EHL friction (traction)
- Silicones
- Synthetic base stocks
- Traction fluids
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Surfaces, Coatings and Films
- Surfaces and Interfaces
Cite this
Traction characteristics of siloxanes with aryl and cyclohexyl branches. / Zolper, Thomas; Li, Zhi; Jungk, Manfred; Stammer, Andreas; Stoegbauer, Herbert; Marks, Tobin J; Chung, Yip Wah; Wang, Qian.
In: Tribology Letters, Vol. 49, No. 2, 02.2013, p. 301-311.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Traction characteristics of siloxanes with aryl and cyclohexyl branches
AU - Zolper, Thomas
AU - Li, Zhi
AU - Jungk, Manfred
AU - Stammer, Andreas
AU - Stoegbauer, Herbert
AU - Marks, Tobin J
AU - Chung, Yip Wah
AU - Wang, Qian
PY - 2013/2
Y1 - 2013/2
N2 - The molecular structures, rheological properties, and friction coefficients of several new siloxane-based polymers were studied to explore their traction characteristics. The molecular structures including branch content were established by nuclear magnetic resonance spectroscopy, while the molecular mass distributions were determined by gel permeation chromatography. Density, viscosity, elastohydrodynamic film formation, and friction were investigated over a temperature range of 303-398 K. Film thickness and friction measurements were studied under the conditions that are representative of boundary, mixed, and full-film lubrication regimes, aiming at maximizing traction performance and temperature stability by simultaneous optimization of the size and content of ring-shaped branch structures. This study provides quantitative insight into the effect of siloxane molecular structure on the tribological performance for traction drive applications such as continuously variable transmissions.
AB - The molecular structures, rheological properties, and friction coefficients of several new siloxane-based polymers were studied to explore their traction characteristics. The molecular structures including branch content were established by nuclear magnetic resonance spectroscopy, while the molecular mass distributions were determined by gel permeation chromatography. Density, viscosity, elastohydrodynamic film formation, and friction were investigated over a temperature range of 303-398 K. Film thickness and friction measurements were studied under the conditions that are representative of boundary, mixed, and full-film lubrication regimes, aiming at maximizing traction performance and temperature stability by simultaneous optimization of the size and content of ring-shaped branch structures. This study provides quantitative insight into the effect of siloxane molecular structure on the tribological performance for traction drive applications such as continuously variable transmissions.
KW - Continuously variable transmissions (CVT)
KW - EHL friction (traction)
KW - Silicones
KW - Synthetic base stocks
KW - Traction fluids
UR - http://www.scopus.com/inward/record.url?scp=84873405665&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84873405665&partnerID=8YFLogxK
U2 - 10.1007/s11249-012-0066-x
DO - 10.1007/s11249-012-0066-x
M3 - Article
VL - 49
SP - 301
EP - 311
JO - Tribology Letters
JF - Tribology Letters
SN - 1023-8883
IS - 2
ER -