00690naa#a2200217#i#450# EN\\bibl\125555 20260617020731.3 3034-4689 20260601b2026####ek#y0engy0150####ca RU INVESTIGATION OF PROPERTIES OF RUBBER BLENDS AND VULCANIZATES FOR PROTECTIVE COATINGS OF SCREW DOWNHOLE MOTOR Journal article Kazan Kazan National Research Technological University 2026 4 с. Journal article local Volfson Svetoslav Isaakovich Anisimov S. N. Krasil'nikov A. V. Rudnickiy I. V. Fayzullin R. R. vestniktu.ru