Perspektivnye Materialy最新文献_第8页

Microporous carbon material with high adsorption rates 具有高吸附率的微孔碳材料

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-6-46-53

A. Memetova, A. Zelenin, N. Memetov, A. Babkin, A. Gerasimova

{"title":"Microporous carbon material with high adsorption rates","authors":"A. Memetova, A. Zelenin, N. Memetov, A. Babkin, A. Gerasimova","doi":"10.30791/1028-978x-2022-6-46-53","DOIUrl":"https://doi.org/10.30791/1028-978x-2022-6-46-53","url":null,"abstract":"A compacted microporous carbon material (CMC-032) was obtained, which has a number of unique properties: a high specific surface area according to BET (SBET = 2384 m2/g), a large volume of micropores (~ 0.95 cm3/g), and a very high ability to retain methane 336 m3/v3. Sorbent CMC-032 is obtained by activating polymer raw materials with potassium hydroxide and compaction by hot pressing using polyvinyl alcohol as a binder. In the most demanded range of methane accumulation pressures of 3,5 – 10,0  MPa, the amount of accumulated methane in the system with CMC-032 reaches 270 m3/m3. The amount of methane stored in the system with and without CMC-032 adsorbent at 100 bar differs by about 3 times. The physicochemical properties of the obtained CMC-032 adsorbent were studied using methods including adsorption-desorption of N2 at 77 K, X-ray diffraction analysis, FTIR spectroscopy, Raman spectroscopy, and transmission electron microscopy. Based on the adsorption characteristics, it was found that CMC-032 is a promising material for storing natural gas methane. It is assumed that the high adsorption capacity is due to the high micropore volume and packing density.","PeriodicalId":20003,"journal":{"name":"Perspektivnye Materialy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90112972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Properties of a light structural magnesium IMV7-1 type alloy of the Mg – Y – Gd – Zr system with the additions of cerium-group rare-earth metals such as samarium, neodymium, and lanthanum 添加钐、钕、镧等铈族稀土金属后Mg - Y - Gd - Zr体系轻结构IMV7-1型镁合金的性能

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-10-5-13

L. Rokhlin, T. Dobatkina, I. Tarytina, E. Lukyanova, O. A. Ovchinnikova

{"title":"Properties of a light structural magnesium IMV7-1 type alloy of the Mg – Y – Gd – Zr system with the additions of cerium-group rare-earth metals such as samarium, neodymium, and lanthanum","authors":"L. Rokhlin, T. Dobatkina, I. Tarytina, E. Lukyanova, O. A. Ovchinnikova","doi":"10.30791/1028-978x-2022-10-5-13","DOIUrl":"https://doi.org/10.30791/1028-978x-2022-10-5-13","url":null,"abstract":"The effect of small additions of cerium-group rare-earth metals such as samarium (Sm), neodymium (Nd) and lanthanum (La) on the properties of a light high-strength structural magnesium IMV7-1 type alloy of the Mg – Y – Gd – Zr system, where yttrium (Y) and gadolinium (Gd) are yttrium-group rare earth metals, has been studied. It is established that the presence of small quantities of samarium in the IMV7-1 alloy contributes to an increase in its strength properties upon heat treatment (aging) and makes it possible to reduce the time to reach the maximum strengthening. In the case where two other cerium-group rare earth metals, neodymium and lanthanum, are present in the IMV7-1 type alloy, the strengthening upon heat treatment (aging) is also observed, but to a much lesser extent. It has also been established that, as the contents of the main alloying elements (yttrium and gadolinium) are simultaneously increased and samarium is added, the maximum strengthening of the alloys under study gradually increases, and the time to its achievement decreases. The fact that the alloying with samarium results in substantially higher strengthening of the IMV7-1 type alloy than that provided by neodymium and lanthanum is explained by a much higher solubility of samarium compared to these of neodymium and lanthanum in solid magnesium.","PeriodicalId":20003,"journal":{"name":"Perspektivnye Materialy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74416238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulated irradiation of 16Cr – 4Al – 2W – 0.3Ti – 0.3Y2O3 ODS steel, perspective for thermonuclear reactors in the plasma focus facility “Vikhr” 16Cr - 4Al - 2W - 0.3Ti - 0.3Y2O3 ODS钢在等离子体聚焦装置“Vikhr”热核反应堆中的模拟辐照

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-9-12-22

E. V. Demina, N. Vinogradova, A. S. Demin, N. A. Epifanov, E. Morozov, A. Mikhailova, V. N. Pimenov, M. D. Prusakova, S. Rogozhkin, S. Shevtsov

{"title":"Simulated irradiation of 16Cr – 4Al – 2W – 0.3Ti – 0.3Y2O3 ODS steel, perspective for thermonuclear reactors in the plasma focus facility “Vikhr”","authors":"E. V. Demina, N. Vinogradova, A. S. Demin, N. A. Epifanov, E. Morozov, A. Mikhailova, V. N. Pimenov, M. D. Prusakova, S. Rogozhkin, S. Shevtsov","doi":"10.30791/1028-978x-2022-9-12-22","DOIUrl":"https://doi.org/10.30791/1028-978x-2022-9-12-22","url":null,"abstract":"A study of the radiation-thermal resistance of ferritic steel 16Cr – 4Al – 2W – 0.3Ti – 0.3Y2O3 was made. This ODS (oxide dispersion strengthened) steel is perspective for fusion applications. The “Vikhr” Plasma Focus installation was used to introduse of powerful pulsed flows of helium ions and helium plasma. The power density of a beam of fast helium ions and high-temperature helium plasma flows was ~ 108 and 107 W/cm2 at exposure times of ~ 50 and 100 ns, respectively. The number of pulses N varied in the range from 10 to 30. The rate of evaporation and radiaсtive sputtering changed slightly with an increase in the number of pulses of energy flows acting on the material and amounted to h ≈ 0.01 – 0.02 μm/puls. The irradiated surface after repeated melting under the action of a pulsed radiation-thermal load with powerful energy flows acquired a wave-like character with inclusions of dispersed micro particles of the second phase, containing mainly yttrium, oxygen, aluminum, iron, and titanium. At the same time, in contrast to the refractory metals (W, Mo, Ti) earlier under similar radiation conditions studied, no micro- and macro cracks were formed on the surface of the material facing the plasma. “Vikhr” Plasma Focus setup proved to be an effective tool for simulation testing of candidate materials with magnetic and inertial plasma confinement.","PeriodicalId":20003,"journal":{"name":"Perspektivnye Materialy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82154961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physico-mechanical properties of multicomponent nanocomposites based on polyolefins 聚烯烃基多组分纳米复合材料的物理力学性能

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-7-58-65

N. Kakhramanov, Kh. V. Allahverdieva, Y. Kakhramanly, E. V. Dadasheva

{"title":"Physico-mechanical properties of multicomponent nanocomposites based on polyolefins","authors":"N. Kakhramanov, Kh. V. Allahverdieva, Y. Kakhramanly, E. V. Dadasheva","doi":"10.30791/1028-978x-2022-7-58-65","DOIUrl":"https://doi.org/10.30791/1028-978x-2022-7-58-65","url":null,"abstract":"The results of a study of the effect of the various types of fillers concentration at the nanoscale level, zinc stearate, aluminum, technical carbon — on the physical and mechanical properties of nanocomposites based on polyolefins are presented. High density polyethylene, low density polyethylene and polypropylene were used as polyolefins. In order to improve the compatibility of polyolefins with fillers, a copolymer of high density polyethylene with maleic anhydride was used as a compatibilizer. The amount of maleic anhydride in the high density polyethylene was 5.7 wt %. Investigated such properties of nanocomposites as ultimate tensile stress, tensile yield strength, elongation at break, static bending strength and Vicat heat resistance. It was found that the use of a compatibilizer contributes to a significant improvement in the main physico-mechanical characteristics of nanocomposites, which indicates the technological compatibility of the mixed components of the mixture with the polymer matrix. It was found that in the presence of fillers, the elongation at break of the nanocomposites slightly decreases. It is shown that an increase in the content of technical carbon in the polymer matrix in the presence of 5.0 wt % concentration of aluminum is accompanied by an increase in the ultimate tensile stress and yield stress during stretching of nanocomposites with a maximum at a certain ratio of the mixture components. It was found that in polyolefins characterized by a relatively high degree of crystallinity, the maximum value of the ultimate tensile stress is achieved at a lower concentration of technical carbon.","PeriodicalId":20003,"journal":{"name":"Perspektivnye Materialy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75620804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Charging state of polyethylene composites with TlGaTe2 semiconductor filler TlGaTe2半导体填料聚乙烯复合材料的充电状态

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-11-29-35

M. A. Nuriev, A. Abdullaev, I. M. Nuruev, A. Shukurova, V. G. Mamedov

引用次数: 0

Obtaining and properties of ultrafiltration cellulose acetate membranes on a nylon net support 尼龙网支撑超滤醋酸纤维素膜的制备及性能研究

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-3-46-54

D. D. Fazullin, L. I. Fazullina, G. Mavrin

{"title":"Obtaining and properties of ultrafiltration cellulose acetate membranes on a nylon net support","authors":"D. D. Fazullin, L. I. Fazullina, G. Mavrin","doi":"10.30791/1028-978x-2022-3-46-54","DOIUrl":"https://doi.org/10.30791/1028-978x-2022-3-46-54","url":null,"abstract":"Composite membranes nylon-AC (NAC) were obtained by immersing a nylon mesh substrate in a 5 % solution of cellulose acetate (AC) in acetone. The AC content in the membrane ranged from 21 to 45 %, depending on the number of applied surface layers. According to the results of studying the properties of composite membranes, an increase in water absorption and total porosity of membranes after the application of the first layer of AC was found, and with the application of the next layer of AC, the values of water absorption and total porosity slightly decrease, which is due to the compaction of the membrane structure. Also, a decrease in the contact angle of the membrane wetting by 33° was revealed, which means an increase in the hydrophilic properties of the membrane, which increases the wettability and productivity of the obtained membranes. Composite membranes with two and three layers of AC: NAC2 and NAC3 were used to separate 0.5 % water-oil emulsion with particle sizes from 81 to 422 nm. The specific productivity of the NAC2 membrane by 0.5 % water-oil emulsion was 9433 dm3/(m2·h), the productivity of the NAC3 membrane was 3799 dm3/(m2·h) at a pressure of 0.55 MPa, which exceeds the performance of the commercial ultrafiltration membrane UPM-100 equal to 1843 dm3/(m2·h). According to the results of the study, the retention capacity of composite membranes for oil products from a water-oil emulsion was established, which was 61 % for NAC2 membranes and 75 % for NAC3 membrane. These indicators are not inferior to the retention capacity of a commercial ultrafiltration membrane of the UPM-100 brand.","PeriodicalId":20003,"journal":{"name":"Perspektivnye Materialy","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90724842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A mixed-ligand complex of nickel trimesinate with 1,10-phenanthroline as an adsorbent for organic dyes and a precursor of nanostructured materials 三甲基酸镍与1,10-菲罗啉的混合配体配合物，作为有机染料的吸附剂和纳米结构材料的前驱体

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-8-26-35

V. Zhinzhilo, K. V. Slepova, I. Uflyand

引用次数: 0

Catalyst based on bentonite clay modified with sodium metasilicate for heterogeneous Fenton-Raff type process 偏硅酸钠改性膨润土非均相Fenton-Raff法催化剂的研究

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-12-12-19

T. Kon’kova, A. Rysev

引用次数: 1

Porous tubular scaffolds for tissue engineering structures of small diameter blood vessels 用于小直径血管组织工程结构的多孔管状支架

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-11-36-46

E. A. Nemets, V. A. Surguchenko, Y. Belov, A. I. Xajrullina, V. Sevastyanov

引用次数: 0

Composite proton electrolytes based on acid salts 基于酸盐的复合质子电解质

Perspektivnye Materialy Pub Date : 2022-01-01 DOI: 10.30791/1028-978x-2022-10-14-22

I. Timakov, V. Grebenev, V. Komornikov, S. Prokudin

引用次数: 0