PERSPEKTIVNYE MATERIALY
2021, no. 2
Creation of high-temperature heat-resistant alloys based
on refractory matrices and natural composites
Yu. A. Bondarenko, M. Yu. Kolodyazhnyy, V. A. Surova
The scientific, technical and technological aspects in the field of creating new high-temperature materials for the hot tract parts of gas turbine engines (GTE) with operating temperatures exceeding those existing in the GTE are considered. Investigated more refractory metal materials to create new high-temperature alloys used in the manufacture of working and nozzle blades and other parts of promising gas turbine engines based on Co – Cr, Pt – Al, Nb – Si, Mo – Si – B systems. In Co – Cr alloys, heat resistance is mainly ensured by hardening the Co matrix, including dispersed precipitates of the carbide phase (TaC) and the boride phase Cr2B. In alloys of the Pt – Al system, due to the doping of Cr, Al, Ti, Re ... and precipitates of the coherently embedded Pt3Al phase. In eutectic alloys of the Nb-Si system, this is due to complex hardening of the Nb solid solution and Nb5Si3 silicide, as well as the natural compositional structure. In Mo – Si – B alloys, high strength is achieved by doping a-Mo solid solution and the formation of intermetallic phases Mo3Si, Mo5SiB2, carbides Mo2C, TiC. Compositions were selected, analysis of their smelting methods was carried out, including directed crystallization, which provides a natural compositional structure, mechanical properties at room and high temperatures, oxidation resistance were evaluated, structural features were investigated, information was provided on technological equipment and the possibility of obtaining parts in various ways. It is shown that, depending on the composition of the selected matrix, the working temperature of heat-resistant alloys can increase to 1300 – 1500 °C, which significantly exceeds the existing nickel heat-resistant alloys. It is concluded that the materials under study are promising for use in aircraft engine building and the aerospace industry.
Keywords:heat-resistant alloys, refractory matrices, hardening phases, eutectic composite, microstructure, short-term and long-term strength, gas turbine engines.
DOI: 10.30791/1028-978X-2021-2-5-16
Bondarenko Yuri — All-Russian Institute of Aviation Materials (105005, Moscow, ul. Radio, d. 17), Dr Sci (Eng), chief researcher at Laboratory of Casting process technologies for heat-resistant steels and alloys, specialist in the field of materials science in mechanical engineering. E-mail: viam.lab1@mail.ru.
Kolodyazhny Mikhail —All-Russian Institute of Aviation Materials (105005, Moscow, ul. Radio, d. 17), engineer of 1st category of laboratory Technologies for foundry processes of heat-resistant steels and alloys, specialist in the field of materials science in mechanical engineering. E-mail: viam.lab1@mail.ru.
Surova Valentina —All-Russian Institute of Aviation Materials (105005, Moscow, ul. Radio, d. 17), leading engineer of laboratory Technology of foundry processes of heat-resistant steels and alloys, specialist in the field of materials science in mechanical engineering. E-mail:
viam.lab1@mail.ru.
Reference citing
Bondarenko Yu.A., Kolodyazhnyy M.Yu., Surova V.A. Issledovaniya po sozdaniyu vysokotemperaturnyh zharoprochnyh splavov na osnove tugoplavkih matric i estestvennyh kompozitov [Creation of high-temperature heat-resistant alloys based
on refractory matrices and natural composites]. Perspektivnye Materialy — Advanced Materials (in Russ), 2021, no. 2, p. 5 – 16. DOI: 10.30791/1028-978X-2021-2-5-16
Biodegradation of ultrathin fiber materials based on mixtures
of polyhydroxybutyrate and polylactid
A. A. Ol’hov, R. Yu. Kosenko, V. S. Markin, O. V. Staroverova, E. L. Kucherenko,
A. S. Kurnosov, A. L. Iordanskii
Comparative studies of ozone and oxygen effects, hydrolytic destruction, biodegradation of nonwoven fibrous and film materials based on mixtures of natural polymers - polyhydroxybutyrate and polylactide are carried out in this work. Fibers were obtained from a solution in chloroform via electrospinning method. The films were formed by pouring a solution onto a glass substrate. The structure of materials was investigated by methods of electron and optical microscopy, DSC, EPR spectroscopy. It has been shown that materials enriched with polylactide have greater resistance to oxidation, low resistance to hydrolysis and UV irradiation, in comparison with polyhydroxybutyrate.
Keywords:polyhydroxybutyrate, polylactide, mixtures, films, ultra-thin fibers, electrospinning, oxidation, ozonation, UV irradiation, biodegradation.
DOI: 10.30791/1028-978X-2021-2-17-31
Olkhov Anatoly — Plekhanov Russian University of Economics (117997, Moscow, Stremyanny per., 36); Emanuel Institute of Biochemical Physics of RAS (119334, Moscow, Kosygina st., 4); N.N. Semenov Federal Research Center for Chemical Physics, RAS (119991, Russian Federation, Moscow, Kosygina street, 4), PhD (Chem), acting head of laboratory, specialist in the field of physical chemistry and polymer technology. E-mail: aolkhov72@yandex.ru.
Kosenko Regina — N.N. Semenov Federal Research Center for Chemical Physics of RAS (119991, Moscow, Kosygina st. 4), PhD (Chem), senior researcher, specialist in the field of physical chemistry. E-mail: vadim-parfenov5@rambler.ru. E-mail: super.vmarkin@yandex.ru.
Markin Valery — N.N. Semenov Federal Research Center for Chemical Physics of RAS (119991, Moscow, Kosygina st. 4), PhD (Chem), senior researcher, specialist in the field of physical and chemistry of polymers. E-mail: super.vmarkin@yandex.ru.
Staroverova Olga — N.N. Semenov Federal Research Center for Chemical Physics of RAS (119991, Moscow, Kosygina st. 4), PhD (Chem), researcher, specialist in the development and study of ultrathin fibers based on biodegradable polymers and their composites obtained via electrospinning. E-mail: thalipha@mail.ru.
Kucherenko Ekaterina — N.N. Semenov Federal Research Center for Chemical Physics of RAS (119991, Moscow, Kosygina st. 4), PhD (Chem), researcher, specialist in the development and study of new film and nanofibrillar biodegradable composites based on chitosan polysaccharide and a combination of PLA and PHB polyesters, which are completely biodegradable systems. E-mail: Kucherenko.chph@gmail.com.
Kurnosov Alexandеr — Emanuel Institute of Biochemical Physics of RAS (119334, Moscow, Kosygina st., 4), postgraduate student, specialist in the field of physical and chemistry of polymers. E-mail: sannygraffitiking@yandex.ru.
Iordanskii Alexey — N.N. Semenov Federal Research Center for Chemical Physics of RAS (119991, Moscow, Kosygina st. 4), Dr Sci (Chem), professor, chief researcher, specialist in the field of physical and chemistry of polymers. E-mail: aljordan08@gmail.com.
Reference citing
Ol’hov A.A., Kosenko R.Yu., Markin V.S., Staroverova O.V., Kucherenko E.L., Kurnosov A.S., Iordanskii A.L. Biodegradaciya ul'travoloknistyh materialov na osnove smesej poligidroksibutirata i polilaktida [Biodegradation of ultrathin fiber materials based on mixtures of polyhydroxybutyrate and polylactid]. Perspektivnye Materialy — Advanced Materials (in Russ), 2021, no. 2, p. 17 – 31. DOI: 10.30791/1028-978X-2021-2-17-31
Composite membranes with cellulose acetate surface layer
for water treatment
D. D. Fazullin, L. I. Fazullina, G. V. Mavrin, I. G. Shaikhiev, V. O. Dryakhlov
Microporous composite membranes containing from one to three ultrathin layers were obtained by multistage immersion of a paper base in a solution of cellulose acetate in acetone. The physicochemical properties of membranes have been studied and the parameters of membrane separation of heavy metal ions from tap water have been determined. An increase in the particle size and a decrease in the absolute value of the ζ-potential with an increase in the concentration of cellulose acetate in acetone were revealed. It was found that the porosity of the membranes increased from 47 % to 51 % depending on the number of ultrathin cellulose acetate layers on the substrate surface. A decrease in the moisture absorption of composite membranes and an increase in the contact angle of wetting with distilled water from 30.0° to 68.8°, depending on the number of ultrathin layers, were noted. Microscopic examination of the membrane surface showed that the ultrathin layer consists of many pores with sizes less than 1 micron. The absorption bands in the IR spectra of cellulose acetate and the surface of the composite microporous cellulose acetate (MAC) membrane are identical. The retention capacity of MAC composite membranes, determined by iron ions from an iron (III) chloride solution, ranged from 47.5 to 97.4 % depending on the number of cellulose acetate layers on the substrate surface with a specific productivity of 27.9 to 7399 dm3/(m2·h) and a pressure of 0.35 MPa. A high selectivity of a microporous membrane of three layers of cellulose acetate (MAC3) with respect to heavy metal ions contained in tap water was established: Cr3+ (96 %) > Cu2+ (92 %) > Fe3+ (90 %) > Mn2+ (45 %).
Keywords: composite membrane, cellulose acetate, contact angle, porosity, IR spectra, SEM, heavy metal ions, retardation, selectivity.
DOI: 10.30791/1028-978X-2021-2-32-40
Fazullin Dinar — Naberezhnye Chelny Institute, branch of Kazan Federal University (Naberezhnye Chelny, 423810, prosp. Mira, 68/19), PhD (Eng), associate professor of chemistry and ecology department, specialist in membrane technology. E-mail: denr3@yandex.ru.
Fazullina Leysan —Naberezhnye Chelny Institute, branch of Kazan Federal University (Naberezhnye Chelny, 423810, prosp. Mira, 68/19), employee of engineering center, specialist in instrumental methods for the study of water bodies. E-mail: fazullinaleisan@yandex.ru.
Mavrin Gennady —Naberezhnye Chelny Institute, branch of Kazan Federal University (Naberezhnye Chelny, 423810, prosp. Mira, 68/19), PhD (Chem), head of chemistry and ecology department, specialist in environmental monitoring and sorption processes. E-mail: mavrin-g@rambler.ru.
Shaikhiev Ildar — Kazan National Research Technological University (Kazan, 420015, Karl Marx str, 68), Dr Sci (Eng), head of engineering ecology department, specialist in water treatment methods. E-mail: ildars@inbox.ru.
Dryakhlov Vladislav — Kazan National Research Technological University (Kazan, 420015, Karl Marx str, 68), PhD (Eng), associate professor of engineering ecology department, specialist in the field of physicochemical methods for membrane modification. E-mail:
vladisloved@mail.ru.
Reference citing
Fazullin D.D., Fazullina L.I., Mavrin G.V., Shaikhiev I.G., Dryakhlov V.O. Kompozitnye membrany s poverhnostnym sloem iz acetata cellyulozy dlya vodoochistki i vodopodgotovki [Composite membranes with cellulose acetate surface layer for water treatment]. Perspektivnye Materialy — Advanced Materials (in Russ), 2021, no. 2, p. 32 – 40. DOI: 10.30791/1028-978X-2021-2-32-40
Proton-conducting ceramics based on barium hafnate
and cerate doped with zirconium, yttrium and ytterbium oxides
for fuel cell electrolytes
M. V. Kalinina, T. L. Simonenko, M. Yu. Arsentiev, N. Yu. Fedorenko,
P. A. Tikhonov, O. A. Shilova
Nanopowders of the compositions BaHf1 – xYbxO3 – δ (x = 0.04; 0.08; 0.10) and BaCe0.9 – xZrxY0.1O3 – δ (x = 0; 0.5; 0.6; 0.7 and 0.8) were synthesized by the combined crystallization and nitric acid salts using the citrate-nitrate method. Those nanopowders were used to produce ceramic materials with a cubic crystal structure of the perovskite type, with a grain size of ~ 20 – 70 nm. The study of electrophysical properties revealed that they have a proton type of conductivity in the temperature range of 500 – 700 °C;
σ = 10–2 – 10–5 Cm/cm. Type and mechanism of electrical conductivity of ceramics of the composition BaHf1 – xYbxO3 – δ (x= 0.04; 0.08; 0.10) have been studied both experimentally and using theoretical calculations-by computer modeling using the electron density functional method; the results are in good agreement. The research shows the prospects of using the obtained ceramic materials as proton-conducting electrolytes of solid-oxide fuel cells.
Keywords: joint crystallization of salts, oxides, highly dispersed powders, electrical conductivity, fuel cells, nanoceramics, proton conductors, electrolyte materials.
DOI: 10.30791/1028-978X-2021-2-41-51
Kalinina Marina —Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences (199034, Saint-Petersburg, Makarova naberezhnaya 2), PhD, senior researcher, specialist in physical and chemical properties of nanocrystalline oxide materials. E-mail: tikhonov_p-a@mail.ru.
Simonenko Tatiana — Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences (199034, Saint-Petersburg, Makarova naberezhnaya 2); Kurnakov Institute of General and Inorganic Chemistry of RAS, (119991, Moscow, 31 Leninsky pr.), PhD, specialist in the field of synthesis and physicochemical analysis of functional nanomaterials. E-mail: egorova.offver@gmail.com.
Arsent’ev Maxim —Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences (199034, Saint-Petersburg, Makarova naberezhnaya 2), PhD, senior researcher, specialist in the field of X-ray diffraction analysis and computer simulation of the properties of materials using the density functional theory and the bond valence sum methods. E-mail: tikhonov_p-a@mail.ru.
Fedorenko Nadezhda —Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences (199034, Saint-Petersburg, Makarova naberezhnaya 2), junior researcher, specialists in the field of synthesis and physical-chemical properties of nanocrystalline oxide materials. E-mail: kovalko.n.yu@gmail.com.
Tikhonov Petr —Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences (199034, Saint-Petersburg, Makarova naberezhnaya 2), Dr Sci (Chem.), laboratory adviser, specialist in the field of solid state chemistry, synthesis and physical-chemical properties of functional ceramic nanomaterials, electrodes, films and coatings. E-mail: tikhonov_p-a@mail.ru.
Shilova Olga —Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences (199034, Saint-Petersburg, Makarova naberezhnaya 2), Dr Sci (Chem), professor, chief researcher, acting head of the Laboratory of inorganic synthesis, specialist in the field of physical chemistry and technology of glass-ceramic nanocomposite materials. E-mail: olgashilova@bk.ru.
Reference citing
Kalinina M. V., Simonenko T. L., Arsentiev M. Yu., Fedorenko N. Yu., Tikhonov P. A., Shilova O. A. Protonprovodyashchaya keramika na osnove gafnata i cerata bariya, legirovannyh oksidami cirkoniya, ittriya i itterbiya dlya elektrolitov toplivnyh elementov [Proton-conducting ceramics based on barium hafnate and cerate doped with zirconium, yttrium and ytterbium oxides for fuel cell electrolytes]. Perspektivnye Materialy — Advanced Materials (in Russ), 2021, no. 2, p. 41 – 51. DOI: 10.30791/1028-978X-2021-2-41-51
Thermophysical properties of polymer composites based
on secondary polypropylene filled with chalk
A. Psyanchin, A. B. Glazyrin, E. M. Zakharova, A. G. Khusnullin,
A. R. Sadretdinov, V. P. Zakharov
One of the most common ways to create polymer composites based on polypropylene is to fill it with chalk, which allows you to improve the appearance of the resulting plastic products and their performance properties. The thermoplasticity of the resulting polymer composites determines the possibility of involving retired polymer materials in re-processing, which requires the study of the laws of the influence of heating on the thermophysical properties of the polymer phase. In this paper, we study the regularities of changes in the thermophysical parameters of polymer composites based on secondary polypropylene in the process of filling it with a chalk additive. It is shown that processing of primary polypropylene by injection molding leads to a decrease in the thermal stability of the resulting secondary polymer material without changing the melting and crystallization temperatures of the polymer phase, but is accompanied by a decrease in the melting enthalpy (by 9 – 11 %) and the degree of crystallinity of the polymer (by 5.6 – 6.5 %). Filling secondary polypropylene with chalk further reduces the temperature of the beginning of decomposition of the composite, while the temperature corresponding to the maximum rate of thermal-oxidative destruction is shifted by 18 – 25 °С to the lower temperature region. The introduction of a 2 mass.p. chalk additive into polypropylene reduces the melting point by 3.6 °С and increases the crystallization temperature of the polymer phase by 1.3 °С. Filling of secondary polypropylene with a chalk additive in the amount of 5 – 10 mass.p. reduces the degree of crystallinity of the polymer, which can lead to changes in the physical and mechanical properties of plastic products.
Keywords: secondary polypropylene, chalk, thermal stability, crystallinity, thermogravimetric analysis, differential scanning calorimetry.
DOI: 10.30791/1028-978X-2021-2-52-58
Psyanchin Arthur — Bashkir State University (450076, st. Zaki Validi, 32, Ufa, Rep. Bashkortostan, Russia), post-graduate student, specialist in the field of high-molecular compounds. E-mail: Artps96@yandex.ru.
Glazyrin Andrey — Bashkir State University (450076, st. Zaki Validi, 32, Ufa, Rep. Bashkortostan, Russia), PhD (Eng), associate professor, professor of Department technical chemistry and materials science, specialist in polymer materials science. E-mail: glaab@inbox.ru.
Zakharova Elena — Bashkir State University (450076, st. Zaki Validi, 32, Ufa, Rep. Bashkortostan, Russia), PhD (Chem), associate professor, specialist in the field of high-molecular compounds. E-mail: lena991999@mail.ru.
Khusnullin Aigiz — Bashkir State University (450076, st. Zaki Validi, 32, Ufa, Rep. Bashkortostan, Russia), post-graduate student, specialist in the field of high-molecular compounds. E-mail: aygiz.husnullin@yandex.ru.
Sadritdinov Ainur — Bashkir State University (450076, st. Zaki Validi, 32, Ufa, Rep. Bashkortostan, Russia), post-graduate student, specialist in the field of high-molecular compounds. E-mail:
aynur.sadritdinov@mail.ru.
Zakharov Vadim — Bashkir State University (450076, st. Zaki Validi, 32, Ufa, Rep. Bashkortostan, Russia), Dr Sci (Chem), professor, specialist in the field of high-molecular compounds. E-mail:ZaharovVP@bashedu.ru.
Reference citing
Psyanchin A.A., Glazyrin A.B., Zakharova E.M., Khusnullin A.G.,
Sadretdinov A.R., Zakharov V.P. Teplofizicheskie svojstva polimernyh kompozitov na osnove vtorichnogo polipropilena, napolnennogo melom [Thermophysical properties of polymer composites based on secondary polypropylene filled with chalk]. Perspektivnye Materialy — Advanced Materials (in Russ), 2021, no. 2, p. 52 – 58. DOI: 10.30791/1028-978X-2021-2-52-58
Electrical properties of aluminum oxide ceramics film on a metal
I. Yu. Bakeev, Yu. A. Burachevsky, E. S. Dvilis, D. B. Zolotukhin, Yu. G. Yushkov
The work is devoted to the study of electrical properties (temperature dependences of conductivity, relative dielectric constant, dielectric loss tangent for various frequencies) of an aluminum oxide ceramic film deposited on a metal substrate. The film was created by the original method of electron beam evaporation of a non-conductive target, consisting of a compressed alumina powder, using a plasma electron source, which is able to reliably operate in the fore-vacuum pressure range (5 – 100 Pa). Such increased working gas pressures ensures the generation of a dense beam plasma near the target, which neutralizes the charging of a non-conducting target and thereby provides its effective melting and electron beam evaporation.
Keywords: dielectric films, alumina ceramics, plasma, fore-vacuum pressure range, electron beam.
DOI: 10.30791/1028-978X-2021-2-59-65
Bakeev Ilya — Tomsk State University of Control Systems and Radioelectronics (Tomsk, 634050, Lenina prospect, 40), PhD (Eng), junior research fellow, specialist on plasma electronics. E-mail: bakeeviyu@mail.ru.
Burachevsky Yury — Tomsk State University of Control Systems and Radioelectronics (Tomsk, 634050, Lenina prospect, 40), PhD (Phys-Math), associate professor, specialist on plasma electronics. E-mail: Yury_BYA@mail.ru.
Dvilis Edgar — National Research Tomsk Polytechnic University (Tomsk, 634050, Lenin Avenue, 30), Dr Sci (Phys-Math), professor of Materials science department, specialist in the field of materials science of powder and ceramic materials. E-mail: dvilis@tpu.ru.
Zolotukhin Denis — Tomsk State University of Control Systems and Radioelectronics (Tomsk, 634050, Lenina prospect, 40), PhD (Phys-Math), senior research fellow, specialist on plasma electronics. E-mail: ZolotukhinDen@gmail.com.
Yushkov Yury — Tomsk State University of Control Systems and Radioelectronics (Tomsk, 634050, Lenina prospect, 40), PhD (Eng), senior research fellow, specialist on plasma electronics. E-mail: yushkovyu@mail.ru.
Reference citing
Bakeev I.Yu., Burachevsky Yu.A., Dvilis E.S., Zolotukhin D.B., Yushkov Yu.G. Elektricheskie svojstva plenki alyumooksidnoj keramiki na metalle [Electrical properties of aluminum oxide ceramics film on a metal]. Perspektivnye Materialy — Advanced Materials (in Russ), 2021, no. 2, p. 59 – 65. DOI: 10.30791/1028-978X-2021-2-59-65
Synthesis and study of cathode materials based on carbon nanotubes for lithium-ion batteries
Alexander V. Shchegolkov, F. F. Komarov, M. S. Lipkin, O. V. Milchanin, I. D. Parfimovich,
Alexey V. Shchegolkov, A. V. Semenkova, A. V. Velichko, K. D. Chebotov, V. A. Nokhaeva
This work presents a study of the conditions and possibilities for the intercalation of hexafluorophosphate anions into CNT-based electrodes. For this, cathodes based on CNTs synthesized on various (Co – Mo)/(Al2O3 – MgO) and (Fe – Co)/2.1Al2O3 catalysts were production. As a result, electrode materials were obtained at various concentrations of CNT/graphite: CNT-4F, CNT-6 and CNT-6F. The resulting electrodes were studied by cyclic voltammetry (CVA) in an electrolyte of a dissolved LiPF6 salt based on EC:DEC solvents (in the ratio 1: 1: 1) with an admixture of 3 % VC at a sweep speed of 4 mV/s. Based on the obtained CVA dependences, the specific charge/discharge capacity of the electrodes CNT-4F, CNT-6 and CNT-6F was determined. The largest specific charge/discharge capacity calculated on the mass of CNTs had CNT-4F/graphite electrodes 292 and 164.22 mA·h·g–1, and the minimum specific CNT-4 electrodes without graphite, 41.67 and 1.5 mA·h·g–1, respectively. Also, the dependences of the average electrode utilization coefficient on the charge time at constant current on the cycle number at a charge of 300 s were obtained. For chronoamperograms of individual steps of the СNT-6F electrode, the values of lithium diffusion coefficients were calculated.
Keywords: carbon nanotubes, cyclic voltammetry (CVA), intercalation of anions.
DOI: 10.30791/1028-978X-2021-2-66-76
Shchegolkov Alexander — Tambov State Technical University (Tambov, 392000, Sovetskaya St., 106), PhD (Eng), associate professor of Engineering and technology for the production of nanoproducts department, specialist in the field of functional nanomodified materials for energy. E-mail: energynano@yandex.ru.
Fadey Komarov — A.N. Sevchenko Institute of Applied Physical Problems of Belarussian State University (7, Kurchatov str., 220045, Minsk, Republic of Belarus), Dr Sci (Phys-Math), head of laboratory, professor, corresponding member of the National Academy of Sciences of Belarus. E-mail: komarovF@bsu.by.
Lipkin Mikhail — M.I. Platov South-Russian State Polytechnic University (NPI, Russia, Novocherkassk, 346400, Prosveshcheniya str., 132), Dr Sci (Eng), professor, head of department of Chemical technologies, specialist in еlectrode processes theory in lithium-ion batteries. E-mail: lipkin@yandex.ru.
Shchegolkov Alexey — Tambov State Technical University (Tambov, 392000, Sovetskaya st., 106), graduate student of department of Engineering and technology for the production of nanoproducts, specialist in development of electrochromic coatings, carbon nanomaterials. Email: alexxx5000@mail.ru.
Parfimovich Ivan — A.N. Sevchenko Institute of Applied Physical Problems of Belarussian State University (7, Kurchatov str., 220045, Minsk, Republic of Belarus), junior researcher. E-mail: parfimovich@bsu.by.
Milchanin Oleg — A.N. Sevchenko Institute of Applied Physical Problems of Belarussian State University (7, Kurchatov str., 220045, Minsk, Republic of Belarus), senior researcher. E-mail: milchanin@bsu.by.
Semenkova Anastasiya — M.I. Platov South-Russian State Polytechnic University (NPI, Russia Novocherkassk, 346400, Prosveshcheniya str., 132), second-year master of department of Chemical technologies, specialist in electrode material for lithium-ion batteries synthesis. E-mail: semenkovaanastasiya@mail.ru.
Velichko Anastasiya — M.I. Platov South-Russian State Polytechnic University (NPI, Russia Novocherkassk, 346400, Prosveshcheniya str., 132), second-year master of department of Chemical technologies, specialist in electrode process investigation methods. E-mail: nastijka1996@gmail.com.
Chebotov Kirill — M.I. Platov South-Russian State Polytechnic University (NPI, Russia Novocherkassk, 346400, Prosveshcheniya str., 132), first-year master of department of Chemical technologies, specialist in LIB technology. E-mail: chebotov-1997@mail.ru.
Nokhaeva Veronika — M.I. Platov South-Russian State Polytechnic University (NPI, Russia Novocherkassk, 346400, Prosveshcheniya str., 132), first-year master of department of Chemical technologies, specialist in LIB technology. E-mail: veronikanohaevaa@gmail.com.
Reference citing
Shchegolkov Alexander V., Komarov F.F., Lipkin M.S., Milchanin O.V., Parfimovich I.D.,
Shchegolkov Alexey V., Semenkova A.V., Velichko A.V., Chebotov K.D., Nokhaeva V.A. Sintez i issledovanie katodnyh materialov na osnove uglerodnyh nanotrubok dlya litij-ionnyh akkumulyatorov [Synthesis and study of cathode materials based on carbon nanotubes for lithium-ion batteries]. Perspektivnye Materialy — Advanced Materials (in Russ), 2021, no. 2, p. 66 – 76. DOI: 10.30791/1028-978X-2021-2-66-76
Influence of moulding condition on the properties
of dressed and functionalized nanocomposites based
on low density polyethylene
R. V. Kurbanova, N. T. Kakhramanov, V. S. Osipchik, A. D. Guliev
The results of a study of the effect of injection molding on the physicomechanical and technological properties of nanocomposites based on functionalized low-density polyethylene by maleic anhydride and dressed with talc γ-aminopropyltriethoxysilane are presented. As the object of study, nanocomposites with 5.0 and 30 mass. % of dressed talc were used. Properties such as breaking stress, elongation at break, flexural strength, and volumetric shrinkage were investigated. It was found that the introduction of dressed talc in the composition of chemically modified low density polyethylene contributes to some increase in the breaking stress and the flexural modulus of the nanocomposite. Experimental studies were carried out in a wide range of temperatures of the material cylinder and casting pressure. It was found that comparatively high physical and mechanical properties are achieved in samples obtained at higher temperatures in the zones of the material cylinder. Casting pressure ranged from 50 to 150 MPa. It was found that relatively high physicomechanical and technological properties for nanocomposites with 5.0 and 30 mass. % talc content are achieved at a temperature of the material cylinder in the zones 110 – 130 – 160 – 180 °C and a casting pressure of 150 MPa. A significant reduction in volumetric shrinkage is achieved in samples with 30%mass. talc content. The influence of mold temperature and holding time under pressure on the change in the properties of nanocomposites is considered. It is shown that the most optimal mode in the cooling mold for samples with 5.0 mass. % talc content is 50 °C and the exposure time under pressure is 20 s, and for a nanocomposite with 30%mass. talc content — 50 °C and holding time 10 s. The influence of the location of the gate device relative to the surface of the sample on the change in the properties of composite materials is studied. The scientific substantiation of the discovered patterns in changing the properties of nanocomposites is given.
Keywords: breaking stress, specific elongation, injection moulding, talc, dressing, composite.
DOI: 10.30791/1028-978X-2021-2-77-86
Kurbanova Rena Vagif gizi —Azerbaijan State Oil and Industry University (AZ1010, Baku city, Azadlig-20 avenue), PhD (Chem), associate professor, specialist in the field of obtaining dressed mineral fillers, development and study of the structure and properties of composite materials based on polyolefins and mineral fillers. E-mail: rena06.72@yandex.ru.
Kakhramanov Najaf Tofik oglu — Institute of Polymer Materials of the Azerbaijan National Academy of Sciences (AZ5004, Sumgayit city, S. Vurgun st. 124), Dr Sci (Chem) sciences, professor, specialist in the field of chemical and mechano-chemical modification of polymers, processing of polymers, obtaining and research of nanocomposite materials based on polimers and mineral fillers. E-mail: najaf1946@rambler.ru.
Osipchik Vladimir — Russian University of Chemical Technology named after D.I. Mendeleev (125047, Moscow, Miusskaya square, house 9), Dr Sci (Eng), professor, a prominent specialist in the field of modification and processing of polymers, study of the structure and properties of composite materials. E-mail: vosip@muctr.ru.
Guliyev Agil Jamil oglu — Institute of Polymer Materials of the Azerbaijan National Academy of Sciences (AZ5004, Sumgayit city, S. Vurgun St. 124), specialist in the field of processing and mechano-chemical modification of polymers. E-mail: 4115533@gmail.ru.
Reference citing
Kurbanova R.V., Kakhramanov N.T., Osipchik V.S., Guliev A.D. Vliyanie rezhima lit'ya pod davleniem na svojstva appretirovannyh i funkcionalizirovannyh nanokompozitov na osnove polietilena nizkoj plotnosti [Influence of moulding condition on the properties of dressed and functionalized nanocomposites based on low density polyethylene]. Perspektivnye Materialy — Advanced Materials (in Russ), 2021, no. 2, p. 77 – 86. DOI: 10.30791/1028-978X-2021-2-77-86
