Self-lubricating, wear resistant protic ionic liquid-epoxy resin

A new self-lubricating, wear resistant epoxy resin material (ER+DCi) has been obtained by addition of a 9 wt.% of the room-temperature protic ionic liquid (PIL) tri-[bis(2-hydroxyethyl)ammonium)] citrate (DCi) to the mixture of the prepolymer and the hardener composed of a mixture of amines. The hig...

Full description

Bibliographic Details
Main Authors: M. D. Aviles, N. Saurin, T. Espinosa, J. Sanes, J. Arias-Pardilla, F. J. Carrion, M. D. Bermudez
Format: Article
Language:English
Published: Budapest University of Technology 2017-03-01
Series:eXPRESS Polymer Letters
Subjects:
Online Access:http://www.expresspolymlett.com/letolt.php?file=EPL-0007666&mi=cd
_version_ 1818177557019754496
author M. D. Aviles
N. Saurin
T. Espinosa
J. Sanes
J. Arias-Pardilla
F. J. Carrion
M. D. Bermudez
author_facet M. D. Aviles
N. Saurin
T. Espinosa
J. Sanes
J. Arias-Pardilla
F. J. Carrion
M. D. Bermudez
author_sort M. D. Aviles
collection DOAJ
description A new self-lubricating, wear resistant epoxy resin material (ER+DCi) has been obtained by addition of a 9 wt.% of the room-temperature protic ionic liquid (PIL) tri-[bis(2-hydroxyethyl)ammonium)] citrate (DCi) to the mixture of the prepolymer and the hardener composed of a mixture of amines. The highly polar tricationic protic ammonium carboxylate ionic liquid shows a high contact angle on the resin surface and distributes inside the epoxy matrix as spheres of around 50 µm in diameter, with a mean density of approximately 38 mm2. The presence of the ionic liquid fluid phase inside the cavities has been determined by SEM observation of fracture surfaces and FTIR microscopy. The DCi phase reduces the residual curing enthalpy and the glass transition temperature, as determined by DSC, without significantly changing microhardness or electrical resistivity values. DMA analysis shows that DCi reduces storage modulus, loss modulus and tan δ values. The tribological performance of the new material has been compared with that of the neat epoxy resin under pin-on-disc sliding conditions. ER+DCi shows more than 50% reduction of the friction coefficient with respect to neat epoxy resin, and no surface damage, in contrast with the severe wear that takes place in the case of neat epoxy resin. A self-lubrication mechanism by release of the ionic liquid lubricant under load is proposed.
first_indexed 2024-12-11T20:33:58Z
format Article
id doaj.art-fa1f946a359a4aa7bbffd002743231a2
institution Directory Open Access Journal
issn 1788-618X
language English
last_indexed 2024-12-11T20:33:58Z
publishDate 2017-03-01
publisher Budapest University of Technology
record_format Article
series eXPRESS Polymer Letters
spelling doaj.art-fa1f946a359a4aa7bbffd002743231a22022-12-22T00:51:44ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2017-03-0111321922910.3144/expresspolymlett.2017.23Self-lubricating, wear resistant protic ionic liquid-epoxy resinM. D. AvilesN. SaurinT. EspinosaJ. SanesJ. Arias-PardillaF. J. CarrionM. D. BermudezA new self-lubricating, wear resistant epoxy resin material (ER+DCi) has been obtained by addition of a 9 wt.% of the room-temperature protic ionic liquid (PIL) tri-[bis(2-hydroxyethyl)ammonium)] citrate (DCi) to the mixture of the prepolymer and the hardener composed of a mixture of amines. The highly polar tricationic protic ammonium carboxylate ionic liquid shows a high contact angle on the resin surface and distributes inside the epoxy matrix as spheres of around 50 µm in diameter, with a mean density of approximately 38 mm2. The presence of the ionic liquid fluid phase inside the cavities has been determined by SEM observation of fracture surfaces and FTIR microscopy. The DCi phase reduces the residual curing enthalpy and the glass transition temperature, as determined by DSC, without significantly changing microhardness or electrical resistivity values. DMA analysis shows that DCi reduces storage modulus, loss modulus and tan δ values. The tribological performance of the new material has been compared with that of the neat epoxy resin under pin-on-disc sliding conditions. ER+DCi shows more than 50% reduction of the friction coefficient with respect to neat epoxy resin, and no surface damage, in contrast with the severe wear that takes place in the case of neat epoxy resin. A self-lubrication mechanism by release of the ionic liquid lubricant under load is proposed.http://www.expresspolymlett.com/letolt.php?file=EPL-0007666&mi=cdThermosetting resinsprotic ionic liquidself-lubrication
spellingShingle M. D. Aviles
N. Saurin
T. Espinosa
J. Sanes
J. Arias-Pardilla
F. J. Carrion
M. D. Bermudez
Self-lubricating, wear resistant protic ionic liquid-epoxy resin
eXPRESS Polymer Letters
Thermosetting resins
protic ionic liquid
self-lubrication
title Self-lubricating, wear resistant protic ionic liquid-epoxy resin
title_full Self-lubricating, wear resistant protic ionic liquid-epoxy resin
title_fullStr Self-lubricating, wear resistant protic ionic liquid-epoxy resin
title_full_unstemmed Self-lubricating, wear resistant protic ionic liquid-epoxy resin
title_short Self-lubricating, wear resistant protic ionic liquid-epoxy resin
title_sort self lubricating wear resistant protic ionic liquid epoxy resin
topic Thermosetting resins
protic ionic liquid
self-lubrication
url http://www.expresspolymlett.com/letolt.php?file=EPL-0007666&mi=cd
work_keys_str_mv AT mdaviles selflubricatingwearresistantproticionicliquidepoxyresin
AT nsaurin selflubricatingwearresistantproticionicliquidepoxyresin
AT tespinosa selflubricatingwearresistantproticionicliquidepoxyresin
AT jsanes selflubricatingwearresistantproticionicliquidepoxyresin
AT jariaspardilla selflubricatingwearresistantproticionicliquidepoxyresin
AT fjcarrion selflubricatingwearresistantproticionicliquidepoxyresin
AT mdbermudez selflubricatingwearresistantproticionicliquidepoxyresin