Pregled bibliografske jedinice broj: 249258
The Low Temperature Flow Improvers for Lubricating Oil Based on Styrene and Alkyl Methacrylate Copolymers
The Low Temperature Flow Improvers for Lubricating Oil Based on Styrene and Alkyl Methacrylate Copolymers // Tribology of Alternative Fuels and Ecolubricants. Book of Abstracts / Kajdas, C. ; Franek, F. (ur.).
Beč: Oesterreichische Tribologische Gesellschaft, 2006. str. 31-34 (plenarno, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
The Low Temperature Flow Improvers for Lubricating Oil Based on Styrene and Alkyl Methacrylate Copolymers
Autori
Janović, Zvonimir ; Jukić, Ante
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Tribology of Alternative Fuels and Ecolubricants. Book of Abstracts
/ Kajdas, C. ; Franek, F. - Beč : Oesterreichische Tribologische Gesellschaft, 2006, 31-34
Skup
International Conference Tribology of Alternative Fuels and Ecolubricants
Mjesto i datum
Beč, Austrija, 29.05.2006. - 31.05.2006
Vrsta sudjelovanja
Plenarno
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
lubricants; low temperature flow improvers; copolymers
Sažetak
Mineral lubricating oils contains paraffin wax, which at lower temperatures, crystallizes, gels and prevents free flow of the oil, thereby giving high pour point values. Some polymers of particular structure act as pour point depressants preventing congealing of wax at lower temperatures and offer effective and economically attractive alternative to entirely removing wax from oils by dewaxing. This paper described low temperature behavior of lubricating mineral oil pour point depressants on the base on synthesized methyl/dodecyl/octadecyl-methacrylate terpolymers (PAMA), styrene/methacrylate terpolymers (PAMA-S) as well as their mixtures with mostly used viscosity index improver poly(ethylene-co-propylene) (OCP). The pour point temperatures were determined and the melting transitions and heats of fusion for the crystalline phase of terpolymer depressants were examined by differential scanning calorimetry to elucidate the mechanism of their action. It was proved that the best low temperature properties in investigated paraffinic base oil give a proper ratio of the long side chain n-alkyl methacrylate groups. As far as PAMA-S is concerned, it was established that increased styrene content causes pour point to rise, while this increase may be divided in two linearly dependent areas.
Izvorni jezik
Engleski
Znanstvena područja
Kemijsko inženjerstvo
