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dc.contributor.authorPadgurskas, Juozas-
dc.contributor.authorRukuiža, Raimundas-
dc.contributor.authorKupčinskas, Artūras-
dc.contributor.authorKreivaitis, Raimondas-
dc.description.abstractPurpose – The purpose of this paper is to conduct research on the possibility of improving the tribological and utilization properties of lard and rapeseed oil bio-based greases by mixing it with ethanol and selection of thickener and modification with special biological additives. Design/methodology/approach – Rapeseed oil- and lard-based greases with sodium and lithium soap thickeners were mixed with either water or ethanol and modified with a special biological anti-wear additive. Tribological properties of modified lubricants evaluated on a four-ball machine. Findings – Rapeseed oil- and lard-based greases suspended in ethanol and modified with bio-additive have the same wear resistance as the industrial non-biological lubrication grease and much higher wear resistance as bio-based reference grease. The tribological efficiency of the additives is higher in greases of rapeseed oil and less efficient in lard-based greases. Oxidation and wear tests show that investigated bio-based greases have comparatively stable tribological properties also after their aging. Modified greases have sufficient consistence according penetration measurements and high thermal resistance according drop-point temperature measurements. All produced experimental greases pass within the category of the easily degradable materials. Originality/value – The greases mixed with the ethanol make possible to form more homogeneous and stable grease mixture. Modified bio-based greases have significantly higher wear resistance as bio-based reference grease, their lubrication properties are stable also after the aging and are categorized as easily degradable materialsen
dc.description.sponsorshipVytauto Didžiojo universitetas-
dc.description.sponsorshipŽemės ūkio akademija-
dc.format.extentp. 557 - 563-
dc.relation.ispartofIndustrial Lubrication and Tribology. Bingley., 2015, Vol. 67, N 6-
dc.relation.isreferencedbyScience Citation Index Expanded (Web of Science)-
dc.subjectWear resistanceen
dc.subjectBio-based greasesen
dc.subjectEthanol mixingen
dc.subjectRapeseed oilen
dc.subject.otherMechanikos inžinerija / Mechanical Engineering (T009)-
dc.titleLubrication properties of modified lard and rapeseed oil greases with sodium and lithium thickenersen
dc.typeStraipsnis Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or / and Scopus (S1)-
local.object{"source": {"code": "vdu", "handle": "62076"}, "publisher": {"name": "Emerald Group Publishing", "list": true}, "db": {"clarivate": true, "scopus": false, "list": true}, "issn": ["0036-8792"], "doi": "10.1108/ILT-12-2014-0140", "code": "S1", "subject": ["T009"], "country": "GB", "language": "en", "area": "T", "original": true, "pages": 7, "sheets": 0.5, "timestamp": "20160929115725.0", "account": {"year": 2015, "late": false}, "na": 4, "nip": 0, "affiliation": [{"contribution": 0.25, "aip": 1, "rel": "aut", "org": [{"create": true, "contribution": 0.25, "name": "Vytauto Didžiojo universitetas", "id": "111950396", "level": "0", "type": "uni", "research": "1", "status": "1", "unit": {"name": "Žemės ūkio akademija", "id": "09", "level": "1", "type": "aka", "research": "1", "status": "1"}}], "id": "3677FB32996DCFAD97D0E2BE95ADAF1A", "lname": "Padgurskas", "fname": "Juozas", "status": "1", "name": "Padgurskas, Juozas"}, {"contribution": 0.25, "aip": 1, "rel": "aut", "org": [{"create": true, "contribution": 0.25, "name": "Vytauto Didžiojo universitetas", "id": "111950396", "level": "0", "type": "uni", "research": "1", "status": "1", "unit": {"name": "Žemės ūkio akademija", "id": "09", "level": "1", "type": "aka", "research": "1", "status": "1"}}], "id": "D08772A2F160F1CD2AE06E6AD46D1AAF", "lname": "Rukuiža", "fname": "Raimundas", "status": "1", "name": "Rukuiža, Raimundas"}, {"contribution": 0.25, "aip": 1, "rel": "aut", "org": [{"create": true, "contribution": 0.25, "name": "Vytauto Didžiojo universitetas", "id": "111950396", "level": "0", "type": "uni", "research": "1", "status": "1", "unit": {"name": "Žemės ūkio akademija", "id": "09", "level": "1", "type": "aka", "research": "1", "status": "1"}}], "id": "CB668DFB71E1267F10705543941D511A", "lname": "Kupčinskas", "fname": "Artūras", "status": "0", "name": "Kupčinskas, Artūras"}, {"contribution": 0.25, "aip": 1, "rel": "aut", "org": [{"create": true, "contribution": 0.25, "name": "Vytauto Didžiojo universitetas", "id": "111950396", "level": "0", "type": "uni", "research": "1", "status": "1", "unit": {"name": "Žemės ūkio akademija", "id": "09", "level": "1", "type": "aka", "research": "1", "status": "1"}}], "id": "D4B9935DB8D043E051680E3DD8E6F724", "lname": "Kreivaitis", "fname": "Raimondas", "status": "1", "orcid": "0000-0003-4104-7676", "name": "Kreivaitis, Raimondas"}]}-
item.fulltextWith Fulltext-Žemės ūkio akademija-Žemės ūkio akademija-ėgos ir transporto mašinų inžinerijos institutas-Žemės ūkio akademija-
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications
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