engleski

Influence of polymer additive with different amounts of methyl methacrylate on low temperature properties of mineral diesel fuel

Mineral diesel fuel is a product of oil refining and is characterized by higher density and higher boiling point compared to petrol fuel. In its composition, which primarily consists of a petroleum fraction and a light gas fraction, it contains a small portion of long - chain hydrocarbons (C15 - C25) that crystallize into paraffin crystals at low temperatures. They agglomerate and clog the pores of the fuel filter. This prevents the normal engine operation, and due to agglomeration, sediment is formed in the fuel tank. To eliminate these problems additives are added to improve the low temperature properties. As additives, the most commonly used copolymers are ethylene-vinyl acetate, copolymers of maleic anhydride and poly-α- olefins and their derivatives. In recent research, the interest shifted to methacrylate copolymers. Their effectiveness depends on the ratio of polar and non-polar segments and the length of the alkyl chain in the structure, and their properties are greatly influenced by the structural composition. In this study, we investigated the influence of the content of methyl methacrylate in a polymer additive consisting of a short-chain, long-chain and functional monomer. There was a substantial improvement in the cold flow plugging point by 12 ° C and the pour point by 33 ° C compared to non- additive mineral diesel fuel. The results are promising and the synthesized additives will be used for further investigation in motor engines.

low-temperature diesel properties, fuel additives

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