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Effect of electrode material on impedance spectra of metal-polyethylene structures with carbon nanotubes / N. A. Drokin [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 4. - P. 844-848, DOI 10.1134/S1063783412040063. - Cited References: 15. - This study was supported by the Ministry of Education and Science of the Russian Federation within the framework of the Russian Federal Targeted Program "Scientific and Scientific-Pedagogical Human Resources for the Innovative Russia in 2009-2011" and the Presidium of the Russian Academy of Sciences (integration project no. 27.1). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SPECTROSCOPY
Аннотация: The effect of an electrode material on electrical properties of a composite material based on super-high-molecular polyethylene (SHMPE) filled with carbon nanotubes has been studied using impedance spectroscopy. Using the method of replacing the sample by an equivalent electric circuit, it has been found that, depending on the electrode material, a blocking barrier with high active resistance and a space charge region adjacent to it arise in the interface region. It has been shown that the barrier height is controlled by surface electronic states of SHMPE and weakly depends on the electron work function of metal electrodes (Bardeen barrier). The characteristic times of electrical relaxation characterizing bulk and interface regions of the composite under study have been determined.

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Публикация на русском языке Влияние материала электродов на импедансные спектры структур металл-полиэтилен с углеродными нанотрубками [Текст] / Н. А. Дрокин [и др.] // Физ. тверд. тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54 вып. 4. - С. 791-796

Держатели документа:
[Drokin, N. A.
Glushchenko, G. A.
Osipova, I. V.
Maslennikov, A. N.
Churilov, G. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Drokin, N. A.] Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
[Kokourov, G. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Drokin, N. A.; Дрокин, Николай Александрович; Kokourov, G. A.; Glushchenko, G. A.; Глущенко, Гарий Анатольевич; Osipova, I. V.; Осипова, Ирина Владимировна; Maslennikov, A. N.; Масленников, Алексей Николаевич; Churilov, G. N.; Чурилов, Григорий Николаевич
}
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Flexible film broadband absorber based on diamond-graphite mixture and polyethylene / A. A. Ivanenko [et al.] // Opt. Mater. - 2017. - Vol. 73. - P. 388-392, DOI 10.1016/j.optmat.2017.08.041. - Cited References: 54. - This study was supported by the Russian Foundation for Basic Research (Grants No. 16-32-00302 мол_а), by the Council for Grants of the President of the Russian Federation (SP-317.2015.1), by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 16-42-243059 р_мол_а and No. 16-48-242092 р_офи_м. . - ISSN 0925-3467
Кл.слова (ненормированные):
Flexible film broadband absorption -- Diamond-graphite mixture -- Polyethylene -- Reflectivity -- Transmittance
Аннотация: Flexible film broadband absorber based on diamond-graphite mixture and polyethylene was fabricated by hot pressing. The film thickness of the absorber was 90 μm. We have measured angular reflectivity, diffusional reflectivity and transmittance in the range 85–8000 cm−1 (117–1.25 μm) in order to determine the absorption. It was shown that room temperature pressing of mesh print with 250 μm step significantly reduces reflectivity of the absorber. The absorption was over 0.85 in the range 85–320 cm−1 (117–31.25 μm) and >0.98 in the range 320–8000 cm−1 (31.25–1.25 μm). We believe that the designed and manufactured absorber might become a promising material for optical devices where high broadband absorption and flexibility are required.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ivanenko, A. A.; Иваненко, Александр Анатольевич; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Pshenichnaia, A. A.; Пшеничная, Анастасия Александровна; Shestakov, N. P.; Шестаков, Николай Петрович
}
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The structural state of ultrahigh-molecular-weight polyethylene in single-stage arc-discharge plasma deposition of nanoparticles / L. Y. Fedorov [et al.] // Tech. Phys. Lett. - 2017. - Vol. 43, Is. 11. - P. 965-968, DOI 10.1134/S1063785017110037. - Cited References:9. - This work was supported by the Russian Foundation for Basic Research, project no. 16-33-00137 mol_a "Investigation of the Formation of Polymer Composites Modified with Nanodispersed Copper- Oxide Fillers." . - ISSN 1063-7850. - ISSN 1090-6533

РУБ Physics, Applied
Рубрики:
MECHANICAL ACTIVATION
SURFACE MODIFICATION
UHMWPE
Аннотация: We present the results of a study of the structural state of ultrahigh-molecular-weight polyethylene (morphology, X-ray-diffraction patterns, IR spectra) obtained in a single technological cycle combining the synthesis of nanoparticles and their deposition onto the surface of polymer microgranules. Technological conditions for the preservation of the initial state of ultrahigh-molecular-weight polyethylene are found for its presence in the zone of thermal action of the plasma flow. Mechanisms of degradation of the polymer are discussed.

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Публикация на русском языке Структурное состояние сверхвысокомолекулярного полиэтилена при одностадийном осаждении наночастиц из плазмы дугового разряда [Текст] / Л. Ю. Федоров [и др.] // Письма в Журн. техн. физ. - 2017. - Т. 43 № 21. - С. 24-32

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Res Ctr, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk Res Ctr, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Fedorov, L. Yu.; Karpov, I. V.; Ushakov, A. V.; Lepeshev, A. A.; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Russian Foundation for Basic Research [16-33-00137 mol_a]
}
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    Синтез и электрофизические свойства композитов на основе сверхвысокомолекулярного полиэтилена и углеродных нанотрубок / И. А. Маркевич [и др.] // Журн. СФУ. Техн. и технол. - 2018. - Т. 11, № 2. - С. 190-197 ; J. Sib. Fed. Univ. Eng. Technol., DOI 10.17516/1999-494X-0022. - Библиогр.: 8. - Работа выполнена при поддержке Фонда содействия развитию малых форм предприятий в научно-технической сфере в рамках договора № 9594ГУ/2015 от 01.02.2016. . - ISSN 1999-494X
   Перевод заглавия: Synthesis and electrophysical properties of ultrahigh-molecular-weight polyethylene and carbon nanotubes based composites
Кл.слова (ненормированные):
композиты -- сверхвысокомолекулярный полиэтилен -- углеродные нанотрубки -- диэлектрическая проницаемость -- проводимость -- composites -- ultrahigh-molecular-weight polyethylene -- carbon nanotubes -- dielectric permittivity -- conductivity
Аннотация: Получены композиты на основе сверхвысокомолекулярного полиэтилена и углеродных нанотрубок методом смешивания компонентов в ксилоле при определенных температурах. Комплексные проводимости и диэлектрические проницаемости образцов материалов измерены в диапазоне частот от 100 Гц до 1 ГГц. Установлены условия синтеза как электропроводящих, так и диэлектрических композитов. При этом величина проводимости зависит не только от концентрации углеродных нанотрубок, но и от структуры их распределения в полимерной матрице, которая, в свою очередь, зависит от температурных условий получения композита.
Composites based on ultrahigh-molecular-weight polyethylene and carbon nanotubes were obtained by mixing the components in xylene at certain temperatures. The complex conductivities and permittivities of the material samples were measured in the frequency range from 100 Hz to 1 GHz. The conditions for the synthesis of both electrically conducting and dielectric composites were established. The conductivity depends not only on the concentration of carbon nanotubes, but also on the structure of their distribution in the polymer matrix, which in turn depends on the temperature conditions for obtaining the composite.

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Держатели документа:
Институт химии и химической технологии СО РАН ФИЦ «Красноярский научный центр СО РАН»
Институт физики им. Л.В. Киренского СО РАН ФИЦ «Красноярский научный центр СО РАН»
Сибирский федеральный университет

Доп.точки доступа:
Маркевич, И. А.; Markevich I. A.; Селютин, Г. Е.; Selyutin G. E.; Дрокин, Николай Александрович; Drokin, N. A.; Беляев, Борис Афанасьевич; Belyaev, B. A.

}
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Electrophysical properties of composites based on polyethylene modified with multi-walled carbon nanotubes with high content of Fe-Co-catalyst / S. I. Moseenkov, V. L. Kuznetsov, A. V. Zavorin [et al.] // Russ. J. Appl. Chem. - 2020. - Vol. 93, Is. 4. - P. 586-594, DOI 10.1134/S107042722004014X. - Cited References: 30. - This work was financially supported by the Russian Science Foundation, project no. 17-73-20293. . - ISSN 1070-4272. - ISSN 1608-3296

РУБ Chemistry, Applied
Рубрики:
POLYMER COMPOSITES
   NANOPARTICLES
   ACTIVATION
   NANOCOMPOSITES
Кл.слова (ненормированные):
multi-walled carbon nanotubes -- ferromagnetic catalyst particles -- polymer composites -- mechanical mixing in the melt -- gigahertz range -- electromagnetic absorption
Аннотация: The effect of the residual catalyst for the synthesis of multi-walled carbon nanotubes (MWCNTs) on the electrophysical properties of MWCNT-polyethylene composites produced by melt mechanical mixing was studied. The residual catalyst content was varied by changing the MWCNTs synthesis time. The nanotubes used in the work were characterized using transmission and scanning electron microscopy, atomic emission analysis, X-ray phase analysis, and magnetic permeability measurements. The structure of the synthesized composites was studied using optical and scanning electron microscopy. The dependences of the specific magnetization on the applied magnetic field, bulk electrical conductivity on the volumetric content of the filler in the composite, and the frequency dependences of the reflection, transmission, and absorption of electromagnetic radiation in the range 0.01-18 GHz were obtained. It was established that the obtained composites are characterized by a uniform distribution of nanotubes in the polymer matrix, and the dependence of the bulk electrical conductivity on the content of MWCNTs in the composite has a percolation character. Variation in the synthesis time of nanotubes allows producing MWCNTs with a high content of ferromagnetic particles, which are an alloy close in stoichiometry to the composition of the active component of the catalyst. It was shown that the use of composites modified with MWCNTs with a high content of residual catalyst is more effective for absorbing electromagnetic radiation due to an increase in their magnetic losses.

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Публикация на русском языке Электрофизические свойства композитов на основе полиэтилена, модифицированного многослойными углеродными нанотрубками с высоким содержанием Fe-Co-катализатора [Текст] / С. И. Мосеенков, В. Л. Кузнецов, А. В. Заворин [и др.] // Журн. прикл. химии. - 2020. - Т. 93 № 4. - С. 581-590

Держатели документа:
Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia.
Novosibirsk Natl Res State Univ, Novosibirsk 630090, Russia.
Natl Res Tomsk State Univ, Tomsk 634050, Russia.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Moseenkov, S. I.; Kuznetsov, V. L.; Zavorin, A. V.; Golubtsov, G. V.; Korovin, E. Yu.; Suslyaev, V. I.; Ishchenko, A. V.; Serkova, A. N.; Sergeenko, D. I.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Russian Science FoundationRussian Science Foundation (RSF) [17-73-20293]
}
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Influence of ultrasonic treatment on mechanical and electro-physical characteristics of UHMWPE/MWCNT composites / I. A. Markevich, G. Y. Selyutin, V. A. Poluboyarov [et al.] // Mater. Today: Proc. - 2020. - Vol. 25. - P. 532-535, DOI 10.1016/j.matpr.2020.02.746. - Cited References: 20 . - ISSN 2214-7853
Рубрики:
NANOCOMPOSITE
Кл.слова (ненормированные):
Multi-walled carbon nanotubes -- Ultra-high molecular weight polyethylene -- Composite -- Ultrasonic treatment -- Polymer structure
Аннотация: The influence of ultrasonic treatment on the strength and dielectric properties of composites based on ultra-high molecular weight polyethylene (UHMWPE) and multi-walled carbon nanotubes (MWCNT) is studied. It is revealed that the ultrasonic treatment of composite melt at 130 °C results in the uniform distribution of nanotubes in the UHMWPE matrix, an increase in the degree of composite crystallinity by 10%, an increase in abrasion resistance by 37%, an increase in elongation at rupture by a factor of 2. The change in the physical and mechanical properties of the composite is caused by the change in the polymer matrix structure, taking place as a result of ultrasonic action, and does not depend on the presence of nanotubes in the polymer matrix.

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Держатели документа:
RAS, SB, Inst Chem & Chem Technol, Res Ctr,Krasnoyarsk Sci Ctr, 50,Bil 24, Krasnoyarsk 660036, Russia.
RAS, SB, Inst Solid State Chem & Mechanochem, Kutateladze,18, Novosibirsk 630128, Russia.
RAS, Siberian Branch, Kirensky Inst Phys, 50,Bil 38, Krasnoyarsk 660036, Russia.
RAS, SB, Boreskov Inst Catalysis, Fed Res Ctr, Novosibirsk 630090, Russia.

Доп.точки доступа:
Markevich, I. A.; Selyutin, G. Ye.; Poluboyarov, V. A.; Drokin, N. A.; Дрокин, Николай Александрович; Selyutin, A. G.; Matzko, M. A.; All-Russian Conference (with International Participation) "Hot Topics of Solid State Chemistry : From New Ideas to New Materials"(3rd ; Oct. 01-05, 2019 ; Novosibirsk, Russia)
}
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Electrical and mechanical properties of the high-permittivity ultra-high-molecular-weight polyethylene-based composite modified by carbon nanotubes / I. A. Markevich, G. E. Selyutin, N. A. Drokin, A. G. Selyutin // Tech. Phys. - 2020. - Vol. 65, Is. 7. - P. 1106-1113, DOI 10.1134/S1063784220070129. - Cited References: 39 . - ISSN 1063-7842
Аннотация: A composite based on ultra-high-molecular-weight polyethylene (UHMWPE) added with 1 wt % of multiwalled carbon nanotubes (MWCNTs) with a high permittivity (ε = 4.5) and a low dielectric loss (tanδ = 10–2) in the frequency range from 100 Hz to 100 MHz has been synthesized, and its main mechanical characteristics have been studied. The material has a low (22 MPa) breaking strength, a high (700%) tensile elongation, and an abrasion resistance higher than that of pure UHMWPE by 37%. It is shown using the X-ray diffraction and differential scanning calorimetry data that the changes in the mechanical properties of the composite are related to the changes in the polymer matrix structure under the action of the high-intensity ultrasonic radiation used for embedding MWCNTs into the polymer.

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Публикация на русском языке Электрофизические и механические свойства композита с повышенной диэлектрической проницаемостью на основе сверхвысокомолекулярного полиэтилена, модифицированного углеродными нанотрубками [Текст] / И. А. Маркевич, Г. Е. Селютин, Н. А. Дрокин, А. Г. Селютин // Журн. техн. физ. - 2020. - Т. 90 Вып. 7. - С. 1151-1158

Держатели документа:
Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Markevich, I. A.; Selyutin, G. E.; Drokin, N. A.; Дрокин, Николай Александрович; Selyutin, A. G.
}
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The Influence of Alumina Nanofibers on the Physical and Mechanical Properties of Mineral-Filled Polyethylene: an Experimental Study / A. A. Kuular, M. M. Simunin, T. V. Bermeshev [et al.] // Tech. Phys. Lett. - 2020. - Vol. 46, Is. 12. - P. 1215-1218, DOI 10.1134/S1063785020120214. - Cited References: 6. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of a state order to the Smart Materials and Structures Research Laboratory on the subject “Development of Multifunctional Smart Materials and Structures Based on Modified Polymer Composites Capable to Operate under Extreme Conditions,” subject no. FEFE-2020-0015 . - ISSN 1063-7850
Кл.слова (ненормированные):
mineral-filled polyethylene -- alumina nanofibers -- physical and mechanical properties -- strength enhancement
Аннотация: Improvement of physical and mechanical characteristics of mineral-filled polyethylene (MFPE) upon addition of alumina nanofibers with a high aspect ratio has been experimental studied. It is shown that, at the weight concentration of alumina nanofibers of 0.1 wt %, the ultimate tensile strength increases from 3.82 ± 0.04 to 6.70 ± 0.07 MPa and the Young’s modulus increases from 1.08 ± 0.01 to 1.38 ± 0.01GPa (with respect to MFPE). The MFPE/Al2O3 nanofiber composite can be described within a model of weak adhesive interaction between a filler and a matrix with high friction.

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Публикация на русском языке Влияние нановолокон оксида алюминия на физико-механические свойства минералонаполненного полиэтилена: экспериментальное исследование [Текст] / А. А. Куулар, М. М. Симунин, Т. В. Бермешев [и др.] // Письма в Журн. техн. физ. - 2020. - T. 46 Вып. 24. - С. 7-10

Держатели документа:
Federal Research Center “Krasnoyarsk Science Center,” Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kuular, A. A.; Simunin, M. M.; Bermeshev, T. V.; Voronin, A. S.; Dobrosmyslov, S. S.; Fadeev, Y. V.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Khartov, S. V.
}
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Co/multi-walled carbon nanotubes/polyethylene composites for microwave absorption: Tuning the effectiveness of electromagnetic shielding by varying the components ratio / M. A. Kazakova, N. V. Semikolenova, E. Y. Korovin [et al.] // Compos. Sci. Technol. - 2021. - Vol. 207. - Ст. 108731, DOI 10.1016/j.compscitech.2021.108731. - Cited References: 45. - This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the state assignment for Boreskov Institute of Catalysis (project # АААА-А21-121011390054-1) . - ISSN 0266-3538
Кл.слова (ненормированные):
Polymer composites -- Multi-walled carbon nanotubes -- Co nanoparticles -- Hybrid structures -- Electromagnetic interference shielding
Аннотация: We present novel polyethylene (PE) composites for electromagnetic interference (EMI) shielding application. They are based on cobalt modified multi-walled carbon nanotubes (MWCNTs) produced via in situ polymerization of ethylene, with the Ti-Ziegler–Natta catalyst preliminarily immobilized on Co/MWCNT hybrids. The electromagnetic properties of the composites were tuned by varying the filler loading and Co:MWCNT ratio. The microstructure of the composites and electromagnetic absorption process were carefully characterized by transmission and scanning electron microscopy, X-ray diffraction, vibrating sample magnetometry, ferromagnetic resonance and vector network analysis. The electromagnetic wave absorbing properties of the nanocomposite were investigated in the 10 MHz−18 GHz frequency range revealing that the EMI absorption properties can be tuned by varying the Co:MWCNT weight ratio in the filler. Interestingly, the Co/MWCNT-PE composite with a total filler and Co loading of only 12 and 1.7 wt%, respectively, showed extremely high reflection loss (RL) of −55 dB. More importantly, an effective bandwidth of 12.8–17.8 GHz (RL below −10 dB) was achieved for a matching thickness of only 1.5 mm. The specific RL value (RL/filler loading) of the composite was superior in comparison with the previously reported nanostructured carbon materials. The highly effective absorbing properties of Co/MWCNT-PE composites are explained primarily by the unprecedented uniform filler distribution in the polyethylene as well as by the synergistic effect of MWCNTs and Co nanoparticles. This approach thus offered an effective strategy to design cost-effective, lightweight and flexible EMI shielding materials with tunable dielectric and magnetic performance.

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Держатели документа:
Boreskov Institute of Catalysis, SB RAS, Lavrentieva 5, Novosibirsk, 630090, Russian Federation
National Research Tomsk State University, Lenin Ave. 36, Tomsk, 634050, Russian Federation
Kirensky Institute of Physics, SB RAS, Akademgorodok St. 50, Krasnoyarsk, 660036, Russian Federation
TOTAL Research and Technology Feluy (TRTF), Zone Industrielle C, Feluy, 7181, Belgium
Soft Matter Science and Engineering (SIMM), UMR CNRS 7615, ESPCI Paris, Universite PSL, Sorbonne Universite, Paris, 75005, France

Доп.точки доступа:
Kazakova, M. A.; Semikolenova, N. V.; Korovin, E. Y.; Zhuravlev, V. A.; Selyutin, A. G.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Moseenkov, S. I.; Andreev, A. S.; Lapina, O. B.; Suslyaev, V. I.; Matsko, M. A.; Zakharov, V. A.; Lacaillerie, J. -B.D.D.
}
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10.

    Электрофизические характеристики полимерного композита на основе сверхвысокомолекулярного полиэтилена с наночастицами CuO / Л. Ю. Федоров, Н. А. Дрокин, И. В. Карпов, А. В. Ушаков // Журн. СФУ. Техн. и технол. - 2022. - Т. 15, № 7. - С. 802-811 ; J. Sib. Fed. Univ. Eng. Technol., DOI 10.17516/1999-494X-0437. - Библиогр.: 19. - Исследование выполнено за счет гранта Российского научного фонда (проект № 20-19-00021) . - ISSN 1999-494X. - ISSN 2313-6057
   Перевод заглавия: Electrophysical characteristics of a polymer composite based on ultrahigh molecular weight polyethylene with CuO nanoparticles
Кл.слова (ненормированные):
вакуумный дуговой разряд -- нанокомпозиты -- оксид меди -- импеданс -- диэлектрические свой -- vacuum arc discharge -- nanocomposites -- copper oxide -- impedance -- dielectric properties
Аннотация: Методом импедансной спектроскопии исследованы электрофизические свойства композитного материала на основе сверхвысокомолекулярного полиэтилена с ограниченной массовой концентрацией 0,5 мас.% оксида меди CuO в диапазоне частот от 102 до 108 Гц. Предполагается, что введение в состав полимера малых концентраций наночастиц способствует более равномерному их осаждению на поверхностях полимерных гранул. Это позволяет в процессе тестирования таких образцов выявить наиболее вероятные механизмы их поляризации и протекания электрического тока в относительно однородном ансамбле наночастиц в полимерной матрице. Установлено, что внедряемые в полимерную матрицу наночастицы незначительно влияют на процессы электрической поляризации, но приводят к появлению частотно-зависимой проводимости в широком диапазоне частот. Этот процесс сопровождается существенным возрастанием диэлектрических потерь. Электрофизические характеристики полученных композитов обсуждаются с учётом переноса электрических зарядов (ионов или электронов) как по внутренней, так и по поверхностной структуре наночастиц CuO.
The electrophysical properties of a composite material based on ultrahigh molecular weight polyethylene with a limited mass concentration of 0.5 wt% copper oxide CuO in the frequency range from 102 to 108 Hz were studied by impedance spectroscopy. It is assumed that the introduction of low concentrations of nanoparticles into the polymer composition contributes to their more uniform deposition on the surfaces of polymer granules. This makes it possible to reveal the most probable mechanisms of their polarization and the flow of electric current in a relatively homogeneous ensemble of nanoparticles in a polymer matrix during testing of such samples. It has been established that nanoparticles introduced into the polymer matrix have little effect on the processes of electric polarization, but lead to the appearance of frequency-dependent conductivity in a wide frequency range. This process is accompanied by a significant increase in dielectric losses. The electrophysical characteristics of the resulting composites are discussed taking into account the transfer of electric charges (ions or electrons) both along the internal and surface structures of CuO nanoparticles.

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Держатели документа:
Сибирский федеральный университет, Российская Федерация, Красноярск
Федеральный исследовательский центр «Красноярский научный центр СО РАН», Российская Федерация, Красноярск
Институт физики им. Л. В. Киренского ФИЦ КНЦ СО РАН, Российская Федерация, Красноярск

Доп.точки доступа:
Федоров, Л. Ю.; Дрокин, Николай Александрович; Drokin, N. A.; Карпов, И. В.; Ушаков, А. В.

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