Rheometric studies of new class ionic liquid nanolubricants

S.I. Bakhtiyarov, D.A. Siginer

Research output: Contribution to conferencePaper

Abstract

The traditional lubricating materials used in space, such as mineral oils, polyol ester, PFPE, Pennzane, etc. have limited lifetimes in vacuum due to the catalytic degradation on metal surfaces, high vaporization at high temperatures, dewetting, and other disadvantages. The lubricants for the space applications must have vacuum stability (i.e. low vapor pressure), high viscosity index (wide liquid range), low creep tendency, good elastohydrodynamic and boundary lubrication properties, radiation atomic oxygen resistance, optical or infrared transparency. Thermophysical and chemical analyses are another important required set of tests for the newly developed space lubricants. Some of these properties for liquid lubricants are base oil and additive volatility, creep, surface tension, viscosity, chemical composition, weight loss, density, vapor pressure, etc. Unfortunately, the properties such as non-linearity in the rheological behavior of the lubricants were not studied well for newly developed systems. The rheological properties are crucial to analyzing thermodynamic and energy dissipative aspects of the lubrication process. The rheological measurements for the newly developed ionic liquid nanolubricant were conducted using rotational rheometer AES G-2 of “parallel-plates” mode.
Original languageEnglish
Number of pages2
DOIs
Publication statusPublished - 2017
EventASME 2017 International Mechanical Engineering Congress and Exposition: Fluids Engineering - Tampa, United States
Duration: Nov 3 2017Nov 9 2017

Conference

ConferenceASME 2017 International Mechanical Engineering Congress and Exposition
CountryUnited States
CityTampa
Period11/3/1711/9/17

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Ionic Liquids
Lubricants
Vapor pressure
Lubrication
Creep
Vacuum
Viscosity
Elastohydrodynamics
Mineral Oil
Rheometers
Space applications
Liquids
Vaporization
Transparency
Surface tension
Oils
Esters
Metals
Thermodynamics
Oxygen

Cite this

Bakhtiyarov, S. I., & Siginer, D. A. (2017). Rheometric studies of new class ionic liquid nanolubricants. Paper presented at ASME 2017 International Mechanical Engineering Congress and Exposition, Tampa, United States. https://doi.org/10.1115/IMECE2017-72545
Bakhtiyarov, S.I. ; Siginer, D.A. / Rheometric studies of new class ionic liquid nanolubricants. Paper presented at ASME 2017 International Mechanical Engineering Congress and Exposition, Tampa, United States.2 p.
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Bakhtiyarov, SI & Siginer, DA 2017, 'Rheometric studies of new class ionic liquid nanolubricants' Paper presented at ASME 2017 International Mechanical Engineering Congress and Exposition, Tampa, United States, 11/3/17 - 11/9/17, . https://doi.org/10.1115/IMECE2017-72545

Rheometric studies of new class ionic liquid nanolubricants. / Bakhtiyarov, S.I.; Siginer, D.A.

2017. Paper presented at ASME 2017 International Mechanical Engineering Congress and Exposition, Tampa, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Rheometric studies of new class ionic liquid nanolubricants

AU - Bakhtiyarov, S.I.

AU - Siginer, D.A.

N1 - Export Date: 20 June 2018

PY - 2017

Y1 - 2017

N2 - The traditional lubricating materials used in space, such as mineral oils, polyol ester, PFPE, Pennzane, etc. have limited lifetimes in vacuum due to the catalytic degradation on metal surfaces, high vaporization at high temperatures, dewetting, and other disadvantages. The lubricants for the space applications must have vacuum stability (i.e. low vapor pressure), high viscosity index (wide liquid range), low creep tendency, good elastohydrodynamic and boundary lubrication properties, radiation atomic oxygen resistance, optical or infrared transparency. Thermophysical and chemical analyses are another important required set of tests for the newly developed space lubricants. Some of these properties for liquid lubricants are base oil and additive volatility, creep, surface tension, viscosity, chemical composition, weight loss, density, vapor pressure, etc. Unfortunately, the properties such as non-linearity in the rheological behavior of the lubricants were not studied well for newly developed systems. The rheological properties are crucial to analyzing thermodynamic and energy dissipative aspects of the lubrication process. The rheological measurements for the newly developed ionic liquid nanolubricant were conducted using rotational rheometer AES G-2 of “parallel-plates” mode.

AB - The traditional lubricating materials used in space, such as mineral oils, polyol ester, PFPE, Pennzane, etc. have limited lifetimes in vacuum due to the catalytic degradation on metal surfaces, high vaporization at high temperatures, dewetting, and other disadvantages. The lubricants for the space applications must have vacuum stability (i.e. low vapor pressure), high viscosity index (wide liquid range), low creep tendency, good elastohydrodynamic and boundary lubrication properties, radiation atomic oxygen resistance, optical or infrared transparency. Thermophysical and chemical analyses are another important required set of tests for the newly developed space lubricants. Some of these properties for liquid lubricants are base oil and additive volatility, creep, surface tension, viscosity, chemical composition, weight loss, density, vapor pressure, etc. Unfortunately, the properties such as non-linearity in the rheological behavior of the lubricants were not studied well for newly developed systems. The rheological properties are crucial to analyzing thermodynamic and energy dissipative aspects of the lubrication process. The rheological measurements for the newly developed ionic liquid nanolubricant were conducted using rotational rheometer AES G-2 of “parallel-plates” mode.

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Bakhtiyarov SI, Siginer DA. Rheometric studies of new class ionic liquid nanolubricants. 2017. Paper presented at ASME 2017 International Mechanical Engineering Congress and Exposition, Tampa, United States. https://doi.org/10.1115/IMECE2017-72545