DEVELOPMENT OF TWO-COMPONENT CORROSION INHIBITORS BASED ON POLYELECTROLYTES AND HETEROCYCLIC COMPOUNDS (original) (raw)

Study of Portioning of Corrosion Inhibitors between Water and Oil Phases

Oil and Gas Technologies, 2021

Partitioning behaviours of commercial inhibitors like ethoxylated amine and phosphate ester were studied by carrying out partitioning tests and determining the concentration of the inhibitors by conventional colorimetry method and Inductively Coupled Plasma spectroscopy. The tests were performed using various water cuts, hydrocarbon phases, and concentrations in order to find out the effects of these factors. Ethoxylated amine distributed itself mostly into aqueous phase regardless of the conditions. Comparison of partitioning behaviour of phosphate ester in low and high water cut mixtures resulted in some loss of the inhibitor from bulk water phase as water cut decreased. Phosphate ester inhibitor showed significant synergistic effect with other nitrogenous compounds during the partitioning experiments.

Development of a Multifunctional Corrosion Inhibitor, Possessing the Properties of a Microemulsion

Izvestiâ Nacionalʹnoj akademii nauk Respubliki Kazahstan. Seriâ geologii i tehničeskih nauk, 2020

NAS RK is pleased to announce that News of NAS RK. Series of geology and technical sciences scientific journal has been accepted for indexing in the Emerging Sources Citation Index, a new edition of Web of Science. Content in this index is under consideration by Clarivate Analytics to be accepted in the Science Citation Index Expanded, the Social Sciences Citation Index, and the Arts & Humanities Citation Index. The quality and depth of content Web of Science offers to researchers, authors, publishers, and institutions sets it apart from other research databases. The inclusion of News of NAS RK. Series of geology and technical sciences in the Emerging Sources Citation Index demonstrates our dedication to providing the most relevant and influential content of geology and engineering sciences to our community. Қазақстан Республикасы Ұлттық ғылым академиясы "ҚР ҰҒА Хабарлары. Геология жəне техникалық ғылымдар сериясы" ғылыми журналының Web of Science-тің жаңаланған нұсқасы Emerging Sources Citation Index-те индекстелуге қабылданғанын хабарлайды. Бұл индекстелу барысында Clarivate Analytics компаниясы журналды одан əрі the Science Citation Index Expanded, the Social Sciences Citation Index жəне the Arts & Humanities Citation Index-ке қабылдау мəселесін қарастыруда. Webof Science зерттеушілер, авторлар, баспашылар мен мекемелерге контент тереңдігі мен сапасын ұсынады. ҚР ҰҒА Хабарлары. Геология жəне техникалық ғылымдар сериясы Emerging Sources Citation Index-ке енуі біздің қоғамдастық үшін ең өзекті жəне беделді геология жəне техникалық ғылымдар бойынша контентке адалдығымызды білдіреді. НАН РК сообщает, что научный журнал «Известия НАН РК. Серия геологии и технических наук» был принят для индексирования в Emerging Sources Citation Index, обновленной версии Web of Science. Содержание в этом индексировании находится в стадии рассмотрения компанией Clarivate Analytics для дальнейшего принятия журнала в the Science Citation Index Expanded, the Social Sciences Citation Index и the Arts & Humanities Citation Index. Web of Science предлагает качество и глубину контента для исследователей, авторов, издателей и учреждений. Включение Известия НАН РК. Серия геологии и технических наук в Emerging Sources Citation Index демонстрирует нашу приверженность к наиболее актуальному и влиятельному контенту по геологии и техническим наукам для нашего сообщества.

RESEARCH OF FEATURES OF CONSOLIDATION OF ANTI-FRICTION MATERIALS BASED ON POWDER MIXTURE Cu–Pb–C

Collected scientific works of Ukrainian State University of Railway Transport

The article represents the results of research of various methods of obtainingantifriction material "copper-lead-graphite" by methods of powder metallurgy. With the help of hotvacuum electroconsolidation of powders, which is effective for refractory materials, the conditionsfor separate cold pressing are determined, namely, product formation at 500 MPa and sintering at900 °C, which is more productive for metal powders.The initial formation of the samples was carried out in a collapsible steel mold on a hydraulicpress with a force of up to 200 tons from a mixture of powders of copper, lead and graphite, whichhad dimensions of 60–200 μm. Sintering was performed in a vacuum oven at temperatures of 700–900 °C for 20–30 minutes. To obtain a density of more than 5.6 g / cm3, it is necessary to significantlyincrease the pressure during the formation of powders. During the formation of the dry mixture,compression transverse cracks appear.Liquefied kerosene was selected from the li...

SYNTHESIS AND ANTIMICROBIAL ACTIVITY OF COLLOIDAL SOLUTIONS OF BICOMPONENT Ag/CuO NANOPARTICLES STABILIZED BY RAMNOLIPID

Proceedings of the Shevchenko Scientific Society. Series Сhemical Sciences

Despite the extremely high activity of researchers in the direction of green synthesis of nano-particles of silver, copper, as well as bimetallic nanoparticles Ag/Cu-NPs, the many aspects of the synthesis of nanoparticles based on silver and copper remain unexplored, in particular, the studies on the influence of the nature of biosurfactants on the characteristics are relevant obtained nano¬particles, in particular their size, shape, etc., as well as the influence of the morphology and compo¬sition of nanoparticles on their antimicrobial properties. Therefore, the purpose of this work was to synthesize colloidal solutions of bicomponent Ag/CuO-NPs nanoparticles of different composition and to investigate their antimicrobial activity. Bicomponent Ag/CuO nanoparticles of different composition were obtained by the method of coprecipitation of Ag+ and Cu2+ cations in solution of rhamnolipid. It was found that the process of formation of monocomponent CuO nanoparticles is completed withi...

THE CREATION OF NEW HIGH-TEMPERATURE WEAR-RESISTANT COMPOSITE MATERIALS КМХ AND КМХС / СТВОРЕННЯ НОВИХ ЖАРОМІЦНИХ ЗНОСОСТІЙКИХ КОМПОЗИЦІЙНИХ МАТЕРІАЛІВ КМХ ТА КМХС

The new high-temperature wear-resistant composite materials KMX and KMXC are created. The basis of the alloys is a solid solution based on cobalt alloyed of molybdenum, chromium, boron and silicon. The alloy KMXC additionally alloyed with chromium carbide. Additional input of chromium carbide decreases the melting point of the alloy KMXC and helps to stabilizate its structure at operating temperatures. The new composite alloys KMX and KMXC at the critical conditions of heating demonstrate a high wear-resistant levels of deposited layers, which is much higher than the knowns industrial alloys. Розроблено нові жароміцні зносостійкі композиційні матеріали КМХ та КМХС. Основою сплавів є твердий розчин на основі кобальту легований молібденом, хромом, бором та кремнієм. Сплав КМХС додатково легований карбідом хрому. Додаткове введення карбіду хрому забезпечує зменшення температури плавлення сплаву КМХС та сприяє стабілізації його структури за робочих температур. Розроблені нові композиційні сплави КМХ та КМХС демонструють високу зносостійкість наплавлених шарів за критичних умов нагріву, яка значно перевищує показники відомих промислових сплавів.

Mechanosensitive Liquid Crystalline Composites Based on Cholesterics Dispersed in Polyvinyl Alcohol Films

Židkie kristally i ih praktičeskoe ispolʹzovanie, 2021

Получены и исследованы новые жидкокристаллические композиты на основе пленок поливинилового спирта, пластифицированного глицерином с диспергированными в нем каплями холестерического жидкого кристалла. Изучены механооптические свойства полученных композитов и показано, что под действием растяжения происходит сдвиг пика селективного отражения света в коротковолновую область спектра. Амплитуда сдвига зависит от степени растяжения и достигает 100 нм. Полученные полимерные композиты перспективны для создания оптомеханических сенсоров деформации. Ключевые слова: ЖК-композиты, поливиниловый спирт, холестерическая мезофаза, селективное отражение света.