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• W2982809263 abstract "The object of research is N,N-diallyl (3-arylisoxasol-5-yl)-methylenesulfonylamides (Ar: C6H5 (1); C6H4–4–CH3 (2); C6H4–4–OC2H5 (3)) as antiwear additives to oils that are derived from the corresponding sulfonyl chloride and dialylamine. The industrial additive DF-11 (zinc dialkyldithiophosphate) (4) was used as a reference in action, and the 2-mercaptobenzthiazole allyl ether was used as a structural standard (5). As a synthetic oil, pentaerythritol and n-butyric acid ester, which is obtained by the esterification reaction, is used.Some physical characteristics (relative viscosity and refractive index) of the obtained oil were studied with and without the addition of sulfonylamides (1)–(3).The effect of the addition of N, N-diallyl (3-arylisoxasol-5-yl)-methylenesulfonylamides (Ar: C6H5 (1); C6H4–4–CH3 (2); C6H4–4–OC2H5 (3)) on the dynamic strength of the test oil was evaluated by ASTM D2783 (GOST 9490-75) on the four ball friction machine in terms of critical load. The tests were carried out by friction in the corresponding liquids of standardized metal balls made of ShKh 15 steel (microhardness – 64–66 HRC, stiffness parameter – Ra<0.25 μm). The rotation frequency of the upper loaded balls in relation to three stationary balls is 1500 × 1, the oil temperature is 20 °C. The test time at each load is 10 s, the experiment repeatability is three tests for each load.The study of changes in the diameter of the wear spot Dw of metal balls during friction in the initial oil without adding compound (3) and in accordance with the addition was carried out at revolutions of 1500 rpm, an initial temperature of 25 °C, a load of 98 N, and a study time of 1:00. The results obtained indicate that Dw of the oil without making the specified compound was 0.75 mm, and when it was added (0.1 wt. %) – 0.67 mm, that is, the reduction in wear is 10.67 %.It is found that the presence of the studied additives (1)–(3) in low concentrations in a synthetic oil based on pentaerythritol and n-butyric acid can significantly increase its bearing capacity. The most effective compound (3), which at a concentration of 0.1 % of the mass exceeds the bearing capacity in comparison with (4) by 1.38 times, and with (5) – by 1.37 times. The specified compound is more effective in concentration, 10–20 times less in comparison with known additives.Thus, the use of N,N-diallyl (3-arylisoxasol-5-yl)-methylenesulfonylamides as additives to increase the bearing capacity of synthetic oils based on pentaerythritol and synthetic fatty acids, allows to increase the antiwear activity of lubricants. Therefore, they can be used to create new effective compositions for oils and petroleum products." @default.
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• W2982809263 date "2019-07-12" @default.
• W2982809263 modified "2023-09-24" @default.
• W2982809263 title "Research of N,N-diallyl (3-arylisoxasol-5-yl)-methylenesulfonylamides as additives for increasing the load carryng capacity of syntetic oil based on the pentaerythritol esther and butyric acid" @default.
• W2982809263 doi "https://doi.org/10.15587/2312-8372.2019.180178" @default.
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