Change search
Link to record
Permanent link

Direct link
BETA
Wang, Zhou
Publications (2 of 2) Show all publications
Wang, Z., Grahn, M., Antzutkin, O. & Prakash, B. (2013). Temperature-dependent changes of physicochemical and tribological properties of acrylonitrile-butadiene rubber elastomer upon ageing in hexadecane and diethylene glycol dibutyl ether (ed.). Paper presented at . Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, 227(8), 826-836
Open this publication in new window or tab >>Temperature-dependent changes of physicochemical and tribological properties of acrylonitrile-butadiene rubber elastomer upon ageing in hexadecane and diethylene glycol dibutyl ether
2013 (English)In: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, E-ISSN 2041-305X, Vol. 227, no 8, p. 826-836Article in journal (Refereed) Published
Abstract [en]

Acrylonitrile-butadiene rubber elastomers are widely used in seal and tire industries. Physiochemical, surface and tribological properties of acrylonitrile-butadiene rubber exposed to a lubricant in a sealed mechanical contact may gradually change, in particular, at elevated temperatures. In this study, industrial-grade acrylonitrile-butadiene rubber elastomers were aged in two model non-additivated base oils, namely non-polar hexadecane and polar diethylene glycol dibutyl ether at both ambient (298 K) and elevated (398 K) temperatures from 1 to 168 h. Mass changes of acrylonitrile-butadiene rubber before and after ageing indicated that acrylonitrile-butadiene rubber had distinct ageing dynamics in different model base oils and at different temperatures. For acrylonitrile-butadiene rubber aged in nonpolar hexadecane, the rate of weight loss of the rubber was larger at 398 K compared to that at 298 K. On the contrary, distinct weight-gaining (swelling) dynamics were observed for acrylonitrile-butadiene rubber aged in polar diethylene glycol dibutyl ether at 298 and 398 K. Based on Fourier transform infrared spectroscopy, liquid and solid-state nuclear magnetic resonance spectroscopy and energy dispersive spectroscopy analyses, it was found that aldehydes and sulfur- and zinc-containing compounds were leached out from acrylonitrile-butadiene rubber aged in both hexadecane and diethylene glycol dibutyl ether. The results of tribological studies showed that the non-aged acrylonitrile-butadiene rubber has a good wear-resistance. Acrylonitrile-butadiene rubber samples had a very similar surface topography before and after tribo-tests. However, the worn surfaces of acrylonitrile-butadiene rubber samples were characterized by fine scoring (abrasion) marks after ageing in both model base oils. This has been attributed to changes in the steel–rubber contact environment during the sliding process and degradation of mechanical properties of acrylonitrile-butadiene rubber after ageing. For one acrylonitrile-butadiene rubber sample (after ageing in hexadecane at 398 K), very stable friction in the steel–rubber contact was observed.

National Category
Chemical Process Engineering Physical Chemistry Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Chemical Technology; Chemistry of Interfaces; Machine Elements
Identifiers
urn:nbn:se:ltu:diva-6580 (URN)10.1177/1350650113489612 (DOI)000321702800003 ()2-s2.0-84884576695 (Scopus ID)4d403f57-4a7a-4e42-8a24-b07fad7bf07f (Local ID)4d403f57-4a7a-4e42-8a24-b07fad7bf07f (Archive number)4d403f57-4a7a-4e42-8a24-b07fad7bf07f (OAI)
Note
Validerad; 2013; 20130604 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Wang, Z., Grahn, M., Antzutkin, O. & Prakash, B. (2012). Temperature dependent changes of physicochemical and tribological properties of NBR elastomer upon ageing in hexadecane and DGDE (ed.). In: (Ed.), (Ed.), 15th Nordic Symposium on Tribology - NordTrib 2012: 12 - 15 June 2012 - Trondheim, Norway. Paper presented at Nordic Symposium on Tribology : 12/06/2012 - 15/06/2012. Trondheim: Department of Geography, Norwegian University of Science and Technology
Open this publication in new window or tab >>Temperature dependent changes of physicochemical and tribological properties of NBR elastomer upon ageing in hexadecane and DGDE
2012 (English)In: 15th Nordic Symposium on Tribology - NordTrib 2012: 12 - 15 June 2012 - Trondheim, Norway, Trondheim: Department of Geography, Norwegian University of Science and Technology, 2012Conference paper, Published paper (Refereed)
Abstract [en]

Acrylonitrile-butadiene rubber (NBR) elastomers are widely used in seal and tire industries. Physiochemical, surface and tribological properties of NBR exposed to a lubricant in a sealed mechanical contact may gradually change, in particular, at elevated temperatures. In this study, industrial-grade NBR elastomers were aged in two model non-additivated base oils, namely non-polar hexadecane (HEX) and polar Diethylene Glycol Dibutyl Ether (DGDE) at both ambient (298 K) and elevated (398 K) temperatures from 1 to 168 hours. Mass changes of NBR before and after ageing indicated that NBR had distinct ageing dynamics in different model base oils and at different temperatures. For NBR aged in nonpolar HEX, the rate of weight loss of the rubber was larger at 398 K compared to that at 298 K. On the contrary, distinct weight-gaining (swelling) dynamics were observed for NBR aged in polar DGDE at 298 and 398 K. Based on Fourier Transform Infrared (FTIR), liquid and solid-state Nuclear Magnetic Resonance (NMR) spectroscopy and Energy Dispersive Spectroscopy (EDS) analysis it was found that aldehydes and sulfur- and zinc-containing compounds were leached out from NBR aged in both HEX and DGDE. The results of tribological studies showed that the non-aged NBR has a good wear-resistance. NBR samples had a very similar surface topography before and after tribo-tests. However, the worn surfaces of NBR samples were characterized by fine scoring (abrasion) marks after ageing in both model base oils. This has been attributed to changes in the steel-rubber contact environment during the sliding process and degradation of mechanical properties of NBR after ageing. For one NBR sample (after ageing in HEX at 398 K) very stable friction in the steel-rubber contact was observed.

Place, publisher, year, edition, pages
Trondheim: Department of Geography, Norwegian University of Science and Technology, 2012
National Category
Chemical Process Engineering Physical Chemistry Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Chemical Technology; Chemistry of Interfaces; Machine Elements
Identifiers
urn:nbn:se:ltu:diva-31857 (URN)629cc437-a609-417d-b693-89172d415244 (Local ID)629cc437-a609-417d-b693-89172d415244 (Archive number)629cc437-a609-417d-b693-89172d415244 (OAI)
Conference
Nordic Symposium on Tribology : 12/06/2012 - 15/06/2012
Note
Godkänd; 2012; 20120830 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-01-14Bibliographically approved
Organisations

Search in DiVA

Show all publications