uzakuescУченые записки Казанского университета. Серия Естественные наукиUchenye Zapiski Kazanskogo Universiteta Seriya Estestvennye Nauki2542-064X2500-218XKazan (Volga Region) Federal University10.26907/2542-064X.2025.4.658-668uzakuesc-460Research ArticleСтатьиДопирование полиэтилентерефталатной конденсаторной пленки: выбор условийPolyethylene terephthalate capacitor film doping: Selection of conditionsПоповаЕ. И.PopovaE. I.

Екатерина Ивановна Попова, доктор технических наук, начальник лаборатории в составе научно-исследовательского отдела, лаборатория полимерных материалов 

г. Москва 

Ekaterina I. Popova, Dr. Sci. (Engineering), Head of Laboratory within Research Department, Laboratory of Polymeric Materials 

Moscow 

mailbox75@vniia.ruКузнецоваЮ. С.KuznetsovaYu. S.

Юлия Семеновна Кузнецова, инженер I категории лаборатории полимерных материалов

г. Москва  

Yuliya S. Kuznetsova, First Rank Engineer, Laboratory of Polymeric Materials 

Moscow 

ЛазареваО. Л.LazarevaO. L.

Ольга Леонидовна Лазарева, кандидат химических наук, ведущий специалист по физикохимическим исследованиям полимерных материалов, лаборатория полимерных материалов

г. Москва  

Olga L. Lazareva, Cand. Sci. (Chemistry), Leading Specialist in Physical and Chemical Research of Polymeric Materials, Laboratory of Polymeric Materials 

Moscow 

https://orcid.org/0000-0003-3698-0883НевскийР. Е.NevskiyR. E.

Роман Евгеньевич Невский, кандидат технических наук, начальник научно-исследовательского отдела

г. Москва  

Roman E. Nevskiy, Cand. Sci. (Engineering), Head of Research Department

Moscow 

https://orcid.org/0000-0001-8876-9065СоковишинА. В.SokovishinA. V.

Алексей Владимирович Соковишин, доктор технических наук, старший научный сотрудник, заместитель главного конструктора – начальник отделения 

г. Москва 

Alexey V. Sokovishin, Dr. Sci. (Engineering), Senior Researcher, Deputy Chief Designer – Head of Division 

Moscow 

Всероссийский научно-исследовательский институт автоматики им. Н.Л. ДуховаРоссияDukhov Automatics Research InstituteRussian Federation2025060120261674658668Copyright © Попова Е.И., Кузнецова Ю.С., Лазарева О.Л., Невский Р.Е., Соковишин А.В., 20262026Попова Е.И., Кузнецова Ю.С., Лазарева О.Л., Невский Р.Е., Соковишин А.В.Popova E.I., Kuznetsova Y.S., Lazareva O.L., Nevskiy R.E., Sokovishin A.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://uzakuesc.elpub.ru/jour/article/view/460

Полиэтилентерефталатная (ПЭТ) пленка обладает хорошими диэлектрическими свойствами, но высокой радиационно-наведенной проводимостью. Создание ПЭТ пленки с низкой радиационно-наведенной проводимостью возможно за счет допирования промышленно выпускаемых электроизоляционных пленок малыми молекулами – ловушками электронов. В работе исследован процесс допирования полиэтилентерефталатной конденсаторной пленки марки ПЭТ-КЭ (ГОСТ 24234-80) допантами на основе флуоренона – 2,7-динитрофлуореноном-9 (ДНФ) и 2,5,7-тринитрофлуореноном-9 (ТНФ) – с учетом роли растворителя (на примере этиленгликоля и бензилового спирта), выбран температурный диапазон процесса допирования, который ограничен температурой стеклования допируемого полимера (88 °С для ПЭТ) снизу и температурой кипения растворителя сверху, а также подобраны растворитель и концентрация допирующих растворов. На основе результатов эксперимента в качестве растворителей для допантов выбраны этиленгликоль для ТНФ и бензиловый спирт для ДНФ. В результате проведенной работы установлены критерии выбора растворителя для допирующей системы. Растворитель должен иметь высокую температуру кипения, обеспечивать хорошую растворимость допанта и проявлять низкое сродство к полимерной матрице. 

Polyethylene terephthalate (PET) film has good dielectric properties but high radiation-induced conductivity, which can be reduced by doping commercially available electrical insulation films with small electron-trapping molecules. This study investigates the doping process of PET-CE capacitor film (State Standard 24234-80) using fluorenone-based dopants, such as 2,7-dinitro-9-fluorenone (DNF) and 2,5,7-trinitro-9-fluorenone (TNF), and focusing on the role of the solvent (ethylene glycol and benzyl alcohol). The optimal doping temperature range was selected to be between the glass transition temperature of the doping polymer (88 °С for PET, lower limit) and the boiling point of the solvent (upper limit). The appropriate solvent and dopant solution concentrations were determined. Based on the experimental results, ethylene glycol and benzyl alcohol were selected as solvents for TNF and DNF, respectively. The following solvent selection criteria for doping systems were established: high boiling point, high dopant solubility, and low affinity for the polymer matrix. 

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The authors declare that there are no conflicts of interest present.