Friction and wear protection performance of synthetic siloxane lubricants

Thomas J. Zolper; Afif Seyam; Zhi Li; Changle Chen; Manfred Jungk; Andreas Stammer; Tobin J. Marks; Yip Wah Chung; Qian Wang

doi:10.1007/s11249-013-0169-z

Friction and wear protection performance of synthetic siloxane lubricants

Thomas J. Zolper^*, Afif Seyam, Zhi Li, Changle Chen, Manfred Jungk, Andreas Stammer, Tobin J. Marks, Yip Wah Chung, Qian Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Several new siloxane lubricants were synthesized with linear and ring-shaped branch structures of various lengths and branch contents, aiming at a search for better molecular design for lower boundary friction and more effective surface protection against wear of materials. Their molecular structure and mass were measured by means of nuclear magnetic resonance and gel permeation chromatography, respectively. The new lubricants were compared with commercially available polysiloxanes, poly-α-olefins, and perfluoropolyether in lubricating a steel ball-on-steel disk interface using a tribotester at a load of 1.76 GPa and an entrainment speed of 0.025 m/s. The results are used to explain the effects of alkyl branch length L, pendant type J, percent of branch functional monomers Q, and degree of polymerization DP on siloxane design for the most effective boundary lubrication.

Original language	English (US)
Pages (from-to)	365-376
Number of pages	12
Journal	Tribology Letters
Volume	51
Issue number	3
DOIs	https://doi.org/10.1007/s11249-013-0169-z
State	Published - Sep 2013

Keywords

Abrasive wear
Boundary lubrication friction
Silicones
Synthetic base stocks

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1007/s11249-013-0169-z

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title = "Friction and wear protection performance of synthetic siloxane lubricants",

abstract = "Several new siloxane lubricants were synthesized with linear and ring-shaped branch structures of various lengths and branch contents, aiming at a search for better molecular design for lower boundary friction and more effective surface protection against wear of materials. Their molecular structure and mass were measured by means of nuclear magnetic resonance and gel permeation chromatography, respectively. The new lubricants were compared with commercially available polysiloxanes, poly-α-olefins, and perfluoropolyether in lubricating a steel ball-on-steel disk interface using a tribotester at a load of 1.76 GPa and an entrainment speed of 0.025 m/s. The results are used to explain the effects of alkyl branch length L, pendant type J, percent of branch functional monomers Q, and degree of polymerization DP on siloxane design for the most effective boundary lubrication.",

keywords = "Abrasive wear, Boundary lubrication friction, Silicones, Synthetic base stocks",

author = "Zolper, {Thomas J.} and Afif Seyam and Zhi Li and Changle Chen and Manfred Jungk and Andreas Stammer and Marks, {Tobin J.} and Chung, {Yip Wah} and Qian Wang",

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doi = "10.1007/s11249-013-0169-z",

language = "English (US)",

volume = "51",

pages = "365--376",

journal = "Tribology Letters",

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T1 - Friction and wear protection performance of synthetic siloxane lubricants

AU - Zolper, Thomas J.

AU - Seyam, Afif

AU - Li, Zhi

AU - Chen, Changle

AU - Jungk, Manfred

AU - Stammer, Andreas

AU - Marks, Tobin J.

AU - Chung, Yip Wah

AU - Wang, Qian

PY - 2013/9

Y1 - 2013/9

N2 - Several new siloxane lubricants were synthesized with linear and ring-shaped branch structures of various lengths and branch contents, aiming at a search for better molecular design for lower boundary friction and more effective surface protection against wear of materials. Their molecular structure and mass were measured by means of nuclear magnetic resonance and gel permeation chromatography, respectively. The new lubricants were compared with commercially available polysiloxanes, poly-α-olefins, and perfluoropolyether in lubricating a steel ball-on-steel disk interface using a tribotester at a load of 1.76 GPa and an entrainment speed of 0.025 m/s. The results are used to explain the effects of alkyl branch length L, pendant type J, percent of branch functional monomers Q, and degree of polymerization DP on siloxane design for the most effective boundary lubrication.

AB - Several new siloxane lubricants were synthesized with linear and ring-shaped branch structures of various lengths and branch contents, aiming at a search for better molecular design for lower boundary friction and more effective surface protection against wear of materials. Their molecular structure and mass were measured by means of nuclear magnetic resonance and gel permeation chromatography, respectively. The new lubricants were compared with commercially available polysiloxanes, poly-α-olefins, and perfluoropolyether in lubricating a steel ball-on-steel disk interface using a tribotester at a load of 1.76 GPa and an entrainment speed of 0.025 m/s. The results are used to explain the effects of alkyl branch length L, pendant type J, percent of branch functional monomers Q, and degree of polymerization DP on siloxane design for the most effective boundary lubrication.

KW - Abrasive wear

KW - Boundary lubrication friction

KW - Silicones

KW - Synthetic base stocks

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SP - 365

EP - 376

JO - Tribology Letters

JF - Tribology Letters

IS - 3

ER -

Friction and wear protection performance of synthetic siloxane lubricants

Abstract

Keywords

ASJC Scopus subject areas

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