Relevant bibliographies by topics / Expanded graphite / Journal articles

Journal articles on the topic 'Expanded graphite'

To see the other types of publications on this topic, follow the link: Expanded graphite.
Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Expanded graphite.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Wang, Meng Lu, and Li Ji. "Expansion Mechanism of Expandable Graphite Formed by Natural Graphite with Different Particle Size." Advanced Materials Research 499 (April 2012): 16–19. http://dx.doi.org/10.4028/www.scientific.net/amr.499.16.

Full text
Abstract:
Using three natural graphites with different particle sizes, 80, 50 and 35 mesh, as raw material, three expanded graphites were prepared by irradiating expandable graphite in a microwave oven. Results show that the particle size of natural graphite influences strongly the expansion ratio of expanded graphite, and the larger the particle size, the larger the expansion ratio. In addition, the expansion mechanism of expandable graphite is discussed.
APA, Harvard, Vancouver, ISO, and other styles
2

Chao, Chunyan, Ming Gao, and Shun Chen. "Expanded graphite." Journal of Thermal Analysis and Calorimetry 131, no. 1 (January 9, 2017): 71–79. http://dx.doi.org/10.1007/s10973-016-6084-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Liu, Li Lai, Mao Zhong An, Shan Chao Xing, Xiao Jun Shen, Chen Yang, and Xin Long Xu. "Preparation of Graphene Oxide Based on Expanded Graphite." Advanced Materials Research 881-883 (January 2014): 1083–88. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.1083.

Full text
Abstract:
Graphene oxide with high degree of oxidation and peelable has been prepared by two-step oxidation method used large flake graphite. The expanded graphite was prepared firstly and then prepared graphene oxide via further oxidation. The influence of oxidation time, oxidant dosage and high temperature reaction on the structure and degree of oxidation were studied. The morphology and structure of graphene oxide were characterized by X-ray diffraction, fourier transform infrared spectra, scanning electron microscope and transmission electron microscope. It was found that high degree of oxidation and large specific surface area graphene oxide was prepared at the ratio of sulfuric acid and expanded graphite was 75 mL : 1 g, the ratio of potassium permanganate and expanded graphite was 4 g : 1 g and the oxidation time at 35 °C was 24 h. This technology is simple without high-temperature reaction process, and solved the problem of low oxidation efficiency when used the large flake graphite as raw materials.
APA, Harvard, Vancouver, ISO, and other styles
4

Ji, Li, and Meng Lu Wang. "Effect of Particle Size of Natural Graphite on Methyl Blue Sorption Behavior of Expanded Graphite." Advanced Materials Research 499 (April 2012): 12–15. http://dx.doi.org/10.4028/www.scientific.net/amr.499.12.

Full text
Abstract:
Using three natural graphites with different particle sizes, 80, 50 and 35 mesh, as raw material, expanded graphite was prepared by rapidly heating expandable graphite in a muffle and by irradiating it in a microwave oven, respectively. The resulting expanded graphites were used for adsorbing methyl blue in water. The results show that the removal rate of methyl blue is influenced by the treatment method of solution, the particle size of natural graphite and expansion method of expandable graphite. After selection of desired operation parameters, a higher removal rate is achieved.
APA, Harvard, Vancouver, ISO, and other styles
5

Hoang Thi, Chien, Ly Vu Thi Huong, Thao Tran Thi, Thuy Vu Thi, Ngan Nguyen Thi, Thanh Nguyen Hai, and Tan Vu T. "Synthesis of Expanded Graphite: Effect of the graphite flake size on adsorption capacities to Methylene Blue." Vietnam Journal of Catalysis and Adsorption 10, no. 3 (June 30, 2021): xx. http://dx.doi.org/10.51316/jca.2021.046.

Full text
Abstract:
For the first time, the expansion grade of graphite was studied through the effect of the flake size. The result shown the larger flake size exhibits a higher expansion grade. In addition, the more expanded material, the higher specific surface area can be obtained. The synthesized expanded graphites were used for the adsorption of methylene blue. The expanded graphite with the highest expansion grade displayed the highest adsorption capacity due to its specific surface area.
APA, Harvard, Vancouver, ISO, and other styles
6

Yue, Xue Qing, Hua Wang, Wei Ma, and Jun Shuang Tian. "Preparing Graphite Nanosheets by Sonicating Expanded Graphite." Applied Mechanics and Materials 552 (June 2014): 353–56. http://dx.doi.org/10.4028/www.scientific.net/amm.552.353.

Full text
Abstract:
Natural Graphite Flakes were Treated by Intercalating, Water-Washing, Drying and Expanding, Forming Expanded Graphite. Graphite Nanosheets were Prepared by Sonicating Expanded Graphite in a Liquid Medium. the Corresponding Products were Characterized by Scanning Electron Microscope. the Results Show that the Graphite Nanosheets as-Prepared have an Average Diameter of 16μm and an Average of Thickness of 25 Nm.
APA, Harvard, Vancouver, ISO, and other styles
7

Roh, Il-Pyo, Hyun-Joon Yim, Myung-Chul Kang, Chan-Hyuk Rhee, and In-Bo Shim. "Synthesis and Magnetic Properties of Expanded Graphite Oxide/Magnetic Nanoparticle Composite." Journal of the Korean Magnetics Society 22, no. 1 (February 29, 2012): 11–14. http://dx.doi.org/10.4283/jkms.2012.22.1.011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Давыдова, Алина Александровна, Елена Владимировна Ракша, Оксана Николаевна Осколкова, Виктория Валерьевна Гнатовская, Петр Владимирович Сухов, Ольга Михайловна Падун, Валентина Александровна Глазунова, et al. "FEW-LAYER GRAPHENE PARTICLES BASED ON THERMALLY EXPANDED COINTERCALATE OF GRAPHITE NITRATE WITH ACETIC AND FORMIC ACIDS." Physical and Chemical Aspects of the Study of Clusters, Nanostructures and Nanomaterials, no. 12() (December 15, 2020): 580–90. http://dx.doi.org/10.26456/pcascnn/2020.12.580.

Full text
Abstract:
Путем расслоения терморасширенного графита в этиловом и трет-бутиловом спиртах под действием ультразвука получены дисперсии малослойных графеновых наночастиц. Исходный терморасширенный графит получен термической обработкой в ударном режиме нагрева тройного соединения соинтеркалирования нитрата графита с уксусной и муравьиной кислотами. Проведено исследование структурных характеристик соинтеркалата нитрата графита и терморасширенного графита методом рентгенофазового анализа. Микроструктура и морфология полученных графеновых частиц исследованы методом просвечивающей электронной микроскопии. Dispersions of graphene nanoparticles were obtained by liquid phase exfoliation of thermally expanded graphite in ethanol as well as tert-butanol via sonication. Initial thermally expanded graphite was obtained by heat treatment in the shock mode of ternary graphite nitrate intercalation compound with formic and acetic acids. Investigation of the graphite nitrate intercalation compound and thermally expanded graphite structural characteristics by X-ray diffraction analysis has been carried out. The microstructure and morphology of the obtained graphene particles were studied by transmission electron microscopy.
APA, Harvard, Vancouver, ISO, and other styles
9

Zhang, Qian, Xin Bao Gao, and Tian Peng Li. "Effect of Expanded Temperature on Microstructure of Carbon Nanotubes/Expanded Graphite Composites." Advanced Materials Research 716 (July 2013): 373–78. http://dx.doi.org/10.4028/www.scientific.net/amr.716.373.

Full text
Abstract:
Carbon nanotube/expanded graphite composite material was prepared by expanding the mixture of multi-walled carbon nanotubes and expansible graphite under the condition of high temperature. The microstructure and composition was studied by using SEM and XRD. The study shows that the tubular structure of carbon nanotubes in the composite material is changed by high temperature expanding process, and the microstructure is different with different expanding temperature. When the expanding temperature was 900°C, carbon nanotubes transformed, then attached to the surface of expanded graphite flake, so carbon nanotubes and expanding graphite combined strongly; globular carbon nanotubes attached to the surface of expanded graphite flake at the temperature of 700°C, both were combined much more strongly; carbon nanotubes retained the tube structure at the temperature of 500°C, combination was looser due to the simple physical adsorption. The result shows that the choice of expanding temperature has an important effect on microstructure of carbon nanotube/expanded graphite composite material.
APA, Harvard, Vancouver, ISO, and other styles
10

Duan, Wen Yan. "Effect of Expansion Temperature of Expandable Graphite on Anti-Friction Effect of Graphite Nonasheets from Sonicating Expanded Graphite." Applied Mechanics and Materials 80-81 (July 2011): 225–28. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.225.

Full text
Abstract:
Three graphite nanosheets were prepared by sonicating three expanded graphites that were formed by rapidly heating expandable graphite at 600, 800 and 1000 °C, respectively. The graphite nanosheets were characterized by scanning electron microscope. The anti-friction effects of the graphite nanosheets used as lubricating additives were investigated. The results show that the size of the graphite nanosheets decreases with increasing the temperature of expandable graphite. The graphite nanosheets have an obvious anti-friction effect, and the effect is related to the heating temperature.
APA, Harvard, Vancouver, ISO, and other styles
11

Celzard, A., S. Schneider, and J. F. Marêché. "Densification of expanded graphite." Carbon 40, no. 12 (2002): 2185–91. http://dx.doi.org/10.1016/s0008-6223(02)00077-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Jia, W., R. Tchoudakov, M. Narkis, and A. Siegmann. "Performance of expanded graphite and expanded milled-graphite fillers in thermosetting resins." Polymer Composites 26, no. 4 (2005): 526–33. http://dx.doi.org/10.1002/pc.20123.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Yue, Xue Qing, Yan Lu, and Dong Hua Lu. "Structural Evolution of Natural Flake Graphite with Different Particle Sizes during the Intercalation and Exfoliation Processes." Applied Mechanics and Materials 80-81 (July 2011): 221–24. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.221.

Full text
Abstract:
In order to investigate the structural evolution of natural flake graphite with different particle sizes during the intercalation and exfoliation process, we used three natural graphites, 35, 50 and 80 mesh, as the raw material and investigated the characteristics of the three chemically prepared graphite intercalation compounds (GICs) of H2SO4 and the three corresponding residue GICs (RGICs). Expanded graphites (EGs) were prepared by rapidly heating the RGICs to 1000 °C in a muffle. The Results show that with decreasing the raw graphite particle size, the oxidizing reaction degree of GIC increases, but the intercalating reaction degree decreases. For RGICs, the relative ratio of RGIC phase in a sample decreases with decreasing the raw material particle size. In addition, decreasing the raw graphite particle size decreases the expanded volume of EG.
APA, Harvard, Vancouver, ISO, and other styles
14

Nyssanbayeva, G., S. Tursunbek, K. Kudaibergenov, Ye Ongarbayev, Z. Mansurov, and S. Lubchik. "Synthesis and study of physical-chemical properties of expanded graphite." International Journal of Biology and Chemistry 9, no. 2 (2016): 36–39. http://dx.doi.org/10.26577/2218-7979-2016-9-2-36-39.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Vacacela Gomez, Cristian, Talia Tene, Marco Guevara, Gabriela Tubon Usca, Dennys Colcha, Hannibal Brito, Raul Molina, Stefano Bellucci, and Adalgisa Tavolaro. "Preparation of Few-Layer Graphene Dispersions from Hydrothermally Expanded Graphite." Applied Sciences 9, no. 12 (June 21, 2019): 2539. http://dx.doi.org/10.3390/app9122539.

Full text
Abstract:
In this study, we propose a novel approach to prepare few-layer graphene (FLG) dispersions, which is realized by exfoliating natural graphite flakes in a surfactant aqueous solution under hydrothermal treatment and liquid-phase exfoliation. In order to obtain stable and well-dispersed FLG dispersions, pristine graphite is hydrothermally expanded in a hexadecyltrimethylammonium bromide (CTAB) aqueous solution at 180 °C for 15 h, followed by sonication up to 3 h. In comparison to long-time sonication methods, the present method is significantly efficient, and most importantly, does not involve the use of an oxidizing agent and hazardous media, which will make it more competent in the scalable production of graphene.
APA, Harvard, Vancouver, ISO, and other styles
16

Yue, Xue Qing, Hua Wang, and Wei Ma. "Producing a New Expanded Graphite by Re-Intercalation of Expandable Graphite." Applied Mechanics and Materials 552 (June 2014): 349–52. http://dx.doi.org/10.4028/www.scientific.net/amm.552.349.

Full text
Abstract:
A new expanded graphite was prepared by re-intercalation and expansion of expandable graphite. The products were characterized by scanning electron microscope. Compared with the common expanded graphite, the network pores of this expanded graphite are more developed.
APA, Harvard, Vancouver, ISO, and other styles
17

Ramanujam, BTS, S. Radhakrishnan, and SD Deshpande. "Polyphenylene sulfide- expanded graphite nanocomposites." Journal of Thermoplastic Composite Materials 30, no. 12 (May 9, 2016): 1603–14. http://dx.doi.org/10.1177/0892705716646420.

Full text
Abstract:
Polyphenylene sulfide (PPS)-expanded graphite (ExGr) conducting nanocomposites have been prepared by powder mixing and in situ polymerization routes after sonicating ExGr particles in acetone. Synthesized PPS has been used to make powder mixed composites. The powder mixed composites exhibit a percolation threshold of 3 wt% due to the formation of graphite nanosheets. When PPS-ExGr composites are prepared by in situ polymerization route, very low electrical percolation threshold less than 0.5 wt% ExGr is obtained. The low percolation threshold obtained is attributed to better dispersion of ExGr nanosheets in the polymer matrix when compared to powder mixed composites. The synthesized PPS has been characterized by X-ray diffraction, differential scanning calorimetry, and infrared spectroscopy. The formation of graphite nanosheets has been confirmed by transmission and scanning electron microcopy analysis.
APA, Harvard, Vancouver, ISO, and other styles
18

Oulmou, F., A. Benhamida, A. Dorigato, A. Sola, M. Messori, and A. Pegoretti. "Effect of expandable and expanded graphites on the thermo-mechanical properties of polyamide 11." Journal of Elastomers & Plastics 51, no. 2 (June 18, 2018): 175–90. http://dx.doi.org/10.1177/0095244318781956.

Full text
Abstract:
The preparation and thermo-mechanical characterization of composites based on polyamide 11 (PA11) filled with various amounts of both expandable and expanded graphites are presented. Investigation conducted using X-ray diffraction (XRD), scanning electron microscopy and surface area analyses indicated how graphite expanded under the selected processing conditions. The XRD analysis on PA11/graphite composites revealed no change in the crystal form of the PA11, while the presence of diffraction peaks associated to the graphite-stacked lamellae can be still detected. All the investigated composites showed an improvement of the thermal stability and mechanical properties (elastic and storage moduli).
APA, Harvard, Vancouver, ISO, and other styles
19

Tanaka, Shigeru, Daisuke Inao, Kouki Hasegawa, Kazuyuki Hokamoto, Pengwan Chen, and Xin Gao. "Graphene Formation through Pulsed Wire Discharge of Graphite Strips in Water: Exfoliation Mechanism." Nanomaterials 11, no. 5 (May 6, 2021): 1223. http://dx.doi.org/10.3390/nano11051223.

Full text
Abstract:
This study aims to clarify the mechanism of exfoliation of graphene through electrical pulsed wire discharge (PWD) of a graphite strip, made by the compression of inexpensive expanded graphite in water. The explosion of the graphite strip was visualized using a high-speed video camera. During the energized heating of the sample, explosions, accompanied by shock waves due to expansion of gas inside the sample, occurred at various locations of the sample, and the sample started to expand rapidly. The exfoliated graphene was observed as a region with low light transmittance. The PWD phenomenon of graphite strips, a type of porous material, is reasonably explained by the change in electrical resistivity of the sample during discharge and the light emission due to energy transition of the excited gas.
APA, Harvard, Vancouver, ISO, and other styles
20

Sun, Ling, and Bunshi Fugetsu. "Mass production of graphene oxide from expanded graphite." Materials Letters 109 (October 2013): 207–10. http://dx.doi.org/10.1016/j.matlet.2013.07.072.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Dideikin, A. T., V. V. Sokolov, D. A. Sakseev, M. V. Baidakova, and A. Ya Vul’. "Free graphene films obtained from thermally expanded graphite." Technical Physics 55, no. 9 (September 2010): 1378–81. http://dx.doi.org/10.1134/s1063784210090239.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Angappan, S., and S. Ruby Fatima. "Facile Microwave Synthesis of Graphene from Expanded Graphite." Graphene 2, no. 1 (June 1, 2014): 14–21. http://dx.doi.org/10.1166/graph.2014.1026.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Ding, Yun, Mingxia Tian, Aili Wang, and Hengbo Yin. "Preparation of Expanded Graphite and Graphite Nanosheets for Improving Electrical Conductivity of Polyester Coating Films." Journal of Nanoscience and Nanotechnology 21, no. 12 (December 1, 2021): 5846–58. http://dx.doi.org/10.1166/jnn.2021.19516.

Full text
Abstract:
Expanded graphite and graphite nanosheets were facilely prepared by the thermal expansion of expandable graphite at 800 °C and sand milling of expanded graphite in water, respectively. When the expandable graphite precursor was prepared by the oxidation and intercalation of natural graphite (5 g) using KMnO4 (6 g) as an oxidant in a concentrated sulfuric acid solution (120 mL) at room temperature (25 °C) for 8 h, the expanded graphite with a maximum volumetric rate of 317 mL g−1 was prepared after the thermal expansion of the expandable graphite precursor at 800 °C for 60 s. The oxidation extent of natural graphite with KMnO4 is crucial for the preparation of expanded graphite. The thicknesses of graphite nanosheets decreased from 8.9 to 3.2 nm when the sand milling time of the expanded graphite in deionized water was prolonged from 6 to 24 h. The prolonging of the sand milling time not only decreased the layer number of the graphite nanosheet but also increased the d002 spacing due to the shocking and shearing forces. The addition of the expanded graphite powder and graphite nanosheets in a polyester paint efficiently improved the electrical conductivity of the resultant polyester coating films.
APA, Harvard, Vancouver, ISO, and other styles
24

Hua, Hong Liang, Yun Wang, Yu Jia Wang, Shi Jun Ruan, Chao Zeng, Ting Zhang, Min Cong Zhu, Ying Chen Zhang, and Deng Xin Li. "Preparation of Expanded Graphite Using Recycling Graphite Rods by Microwave Irradiation." Advanced Materials Research 610-613 (December 2012): 2356–60. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.2356.

Full text
Abstract:
After washing, milling and calcining, the graphite rods recycled from waste dry batteries were used as raw material to prepare expandable graphite by chemical oxidation (using acetic anhydride as inserting and potassium dichromate as oxidant), the expanded graphite was prepared from the obtained expandable graphite by microwave radiation (MW) at 1000W for 60s.The characterization of infrared spectroscopy (IR) and scanning electron microscopy (SEM) of obtained expanded graphite have been discussed. The results show that it is feasible to prepare expanded graphite using graphite rods recycled from waste dry batteries.
APA, Harvard, Vancouver, ISO, and other styles
25

Ciallella, C., T. M. Gruenberger, E. Grivei, and N. Probst. "Expanded graphite offers new opportunities." Plastics, Additives and Compounding 10, no. 3 (May 2008): 40–41. http://dx.doi.org/10.1016/s1464-391x(08)70095-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
26

Matygullina, Elena, Alexander Nesterov, Dmitrii Karavaev, Lyudmila Sirotenko, Almaz Khanov, Denis Lobovikov, and Oleg Isaev. "Graining of thermo-expanded graphite." Materials Today: Proceedings 5, no. 12 (2018): 26119–23. http://dx.doi.org/10.1016/j.matpr.2018.08.040.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Chernysh, I. G., Yu A. Nikitin, and N. V. Levental'. "Formation of thermally expanded graphite." Soviet Powder Metallurgy and Metal Ceramics 30, no. 6 (June 1991): 459–61. http://dx.doi.org/10.1007/bf00795067.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Yu, Kejing, Xia Luo, Menglei Wang, and Kun Qian. "Preparation and characterization of phenolic foam reinforced with expandable graphite and expanded graphite." Journal of Cellular Plastics 54, no. 3 (May 2, 2017): 545–59. http://dx.doi.org/10.1177/0021955x17707755.

Full text
Abstract:
In this paper, two kinds of phenolic foams modified with expandable graphite and expanded graphite were prepared and the effect of particles on the mechanical properties and structure of the foams has been discussed. The mechanical properties, density and morphology of reinforced phenolic foams were studied. The images of scanning electron microscope showed that the size of the modified phenolic foams was smaller and more complete. The mean diameter of the expanded graphite-reinforced phenolic foams was smaller than that of the expandable graphite-reinforced phenolic foams due to the specific surface area of the expanded graphite. The compressive test results showed that the expandable graphite and expanded graphite could enhance the mechanical properties of the foams obviously. And the smaller cell size of the expanded graphite-reinforced foams provided them better mechanical properties. When the addition of the reinforcement reached to 0.8 wt%, the reinforced phenolic foams showed the best compression performance. The compressive strength and modulus with the 0.8 wt% expandable graphite were increased by 70% and 48% and that with the 0.8 wt% expanded graphite were increased by 80% and 69%.
APA, Harvard, Vancouver, ISO, and other styles
29

Thanh, Tung Tran, Housseinou Ba, Lai Truong-Phuoc, Jean-Mario Nhut, Ovidiu Ersen, Dominique Begin, Izabela Janowska, Dinh Lam Nguyen, Pascal Granger, and Cuong Pham-Huu. "A few-layer graphene–graphene oxide composite containing nanodiamonds as metal-free catalysts." J. Mater. Chem. A 2, no. 29 (2014): 11349–57. http://dx.doi.org/10.1039/c4ta01307g.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

Li, Min Jie, Qi Lai, and Yu Feng Li. "The Study on the Preparation of Expanded Graphite by Fine Squama Graphite." Advanced Materials Research 113-116 (June 2010): 1610–13. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1610.

Full text
Abstract:
The experiment improved the synthetic methods of preparing expanded graphite, using the mixture of H2SO4 and HNO3 as the acid, KMnO4 as oxidizing agent and adopting chemical oxidization method to prepare the expanded graphite under the conditions of different temperature. We can get the optimum conditions of preparing expanded graphite by orthogonal experiment.
APA, Harvard, Vancouver, ISO, and other styles
31

Wang, Zhen Ting, and Yang Wang. "Preparation of the Sulfur-Free Expanded Graphite Using Induction Heating Method." Key Engineering Materials 544 (March 2013): 115–19. http://dx.doi.org/10.4028/www.scientific.net/kem.544.115.

Full text
Abstract:
The sulfur-free expansible graphite and expanded graphite were prepared by induction heating method at different temperature using natural flake graphite, nitric acid and phosphoric acid as the raw materials. Expansion effect and heating mechanism has been analyzed. The microstructure of expansible graphite and expanded graphite has been analyzed by means of a scanning electron microscope and an energy spectrum analyzer. The result shows that the expanded volume of the expansible graphite can reach 200mL/g. Expanded graphite is characterized by vermicular structure and more developed pore structure where the pore of internal level basically maintains the original layer appearance of natural flake graphite.
APA, Harvard, Vancouver, ISO, and other styles
32

Hou, Gui Xiang, Hai Ning Na, and Xiao Ming Sang. "Preparation and Characteristic of PSMA/EG Composite Materials." Advanced Materials Research 163-167 (December 2010): 1951–54. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1951.

Full text
Abstract:
Graphite nanosheets prepared through high-temperature oxidation via powdering the expanded graphite. After soaking the expanded graphite with styrene(S) and maleic anhydride(MA) monomers, the polymer (Poly(S-co-MA))/expanded graphite(EG) (PSMA/EG) composite granules were obtained by in situ polymerization. Light microscope，scanning electron microscope and X-ray diffraction characterization were performed. SEM analysis indicate that the expanded graphite was mostly tore to sheets with thickness of 50–80 nm and with diameter of 1μm. Optical micrographs showed that the distribution of graphite platelets is found to be nearly uniform.
APA, Harvard, Vancouver, ISO, and other styles
33

Filimonov, Dmitriy A., Tatyana F. Yudina, Ilya V. Bratkov, and Tatyana V. Ershova. "METHOD OF CYCLIC VOLTAMMETRY FOR ELECTROCHEMICAL STUDIES OF GRAPHITE MATERIALS IN ALKALINE MEDIUM." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 59, no. 2 (July 11, 2018): 60. http://dx.doi.org/10.6060/tcct.20165902.5261.

Full text
Abstract:
The data on the electrochemical and electro catalytic properties of natural (NG), oxidized (OG), thermo expanded (TWG) graphite and graphite oxide (GO) are presented. The evaluation of the electrocatalytic activity of graphites for the reduction of dioxygen in an alkaline solution was carried out. The effective number of electrons for the given process was determined.
APA, Harvard, Vancouver, ISO, and other styles
34

Li, Yun Tao, Hua Yan, and Si Xie Zhao. "Study on the Thermal Stability of Expanded Graphite/Stearic Acid Composite Phase Change Materials." Key Engineering Materials 727 (January 2017): 450–54. http://dx.doi.org/10.4028/www.scientific.net/kem.727.450.

Full text
Abstract:
The expanded graphite/stearic acid composite phase change materials were prepared with stearic acid as phase change materials and expanded graphite as the carrier by the adsorption and encapsulation of expanded graphite. The thermal stability of composite phase change materials were analyzed by TG, XRD and SEM. Results showed that expanded graphite has reticular structure to encapsulate the stearic acid, improving its stability of thermal decomposition, thermal cycle and thermal chemical. When the content of expanded graphite is 10wt. %, the composite phase change materials exhibit good thermal stability, and can meet the requirements of temperature control under different conditions.
APA, Harvard, Vancouver, ISO, and other styles
35

Pang, Min Hui, Xuan Yu Wang, Wen Jie Dong, and Hai Ta Bai. "Study on Attenuation Performance of Expanded Graphite at 8 mm Wave under Different Experiment Conditions." Applied Mechanics and Materials 364 (August 2013): 775–79. http://dx.doi.org/10.4028/www.scientific.net/amm.364.775.

Full text
Abstract:
On the base of analyzing the attenuation mechanism of expanded graphite, the influence of expanding volume of expanded graphite prepared by inserting nitric acid and attenuation performance of expanded graphite at 8mm wave in different expanding temperature is studied. Attenuation performance of expanded graphite prepared in the lab and by smoke equipment is compared in the same surface density. The results show that the temperature is over 500°C when the worm-like graphite can weaken 8mm wave effectively. At 1100°C, it will be up to the maximum, 4.9dBm. It is proved that attenuation performance at 8mm wave of the expanded graphite prepared in the lab is the same as that by smoke equipment.
APA, Harvard, Vancouver, ISO, and other styles
36

Wang, Hua, Xue Qing Yue, and He Wei Fu. "Nanoporous Graphite Materials Produced by Ball-Milling Expanded Graphite." Applied Mechanics and Materials 552 (June 2014): 324–27. http://dx.doi.org/10.4028/www.scientific.net/amm.552.324.

Full text
Abstract:
Expanded graphite was ball-milled for 80 h in a high-energy mill (planetary-type) under an air atmosphere. The products were characterized by scanning electron microscopy. The results show that ball-milling EG produces nanoporous graphite powders.
APA, Harvard, Vancouver, ISO, and other styles
37

Yang, Yan Feng, Xue Jun Zhang, and Xiao Xu. "Preparation and Characteristics of Expanded Graphite." Advanced Materials Research 189-193 (February 2011): 2695–98. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2695.

Full text
Abstract:
Expanded graphite (EG) was prepared using fine flake graphite that could go through 50 mesh as raw material, perchloric acid as inserting agent and concentrated nitric acid as oxidant. The effects of amount of raw materials, reaction time and reaction temperature on expanded volume and sorption capacity of EG were studied, and microstructure of EG were characterized by X-ray diffraction patterns and scanning electron microscope. The results show the best process conditions are as follows: m(flake graphite):m(perchloric acid):m(concentrated nitric acid)=1:6:0.18, the reaction time is 50 min and the reaction temperature is 35°C. The reaction condition is moderate and is controlled easily. The sorption capacity of EG will increase almost linearly with increase of expanded volume. The largest expanded volume and sorption capacity of EG are 241 ml/g and 89g/g, respectively, when the expanding temperature is 800°C.
APA, Harvard, Vancouver, ISO, and other styles
38

Solov’ev, M. E., A. B. Raukhvarber, N. G. Savinskii, and V. I. Irzhak. "Simulation and synthesis of graphene oxide from expanded graphite." Russian Journal of General Chemistry 87, no. 4 (April 2017): 805–11. http://dx.doi.org/10.1134/s1070363217040223.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

Melezhik, A. V., V. F. Pershin, N. R. Memetov, and A. G. Tkachev. "Mechanochemical synthesis of graphene nanoplatelets from expanded graphite compound." Nanotechnologies in Russia 11, no. 7-8 (July 2016): 421–29. http://dx.doi.org/10.1134/s1995078016040121.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Ho, Quang Binh, and Marianna Kontopoulou. "Compatibilized polypropylene nanocomposites containing expanded graphite and graphene nanoplatelets." Polymer Engineering & Science 61, no. 4 (January 31, 2021): 1116–28. http://dx.doi.org/10.1002/pen.25647.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Zhanakhova, Anastasiya N., Bariya Sh Dyskina, Nikolay V. Negutorov, and Nadezhda V. Pykhova. "FEATURES OF ULTRASONIC SPLITTING OF THERMALLY EXPANDED GRAPHITE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 2 (February 8, 2020): 45–51. http://dx.doi.org/10.6060/ivkkt.20206302.6073.

Full text
Abstract:
Thermally expanded graphite is obtained from crucible graphite by treatment with oleum in the presence of an oxidizing agent. The obtained samples of thermally expanded graphite were subjected to ultrasonic dispersion (splitting up) in four liquid media (water, toluene, benzene, acetone). It was shown that in the process of ultrasonic dispersion (splitting), the initial thermally expanded graphite is split into plates with a thickness of several tens to hundreds of nanometers. However, the plates are not single, but are in chaotic clusters with each other. The free bonds of carbon atoms, which are located at the edges of the plates, can play an important role in chemical processes and in the adsorption of substances on the surface of particles of split graphite. It was found that a high degree of perfection of the crystal structure, which is typical of the original graphite, is retained during ultrasonic treatment as compared with mechanical splitting. The change in the specific surface of graphite samples is presented. The main increase in the specific surface of the particles during ultrasonic splitting is created by increasing the area of the surfaces formed during interplanar splitting of graphite plates. Based on the comparison of this parameter, the effect of the used liquids on the splitting process is considered. The high values of the specific surface of the samples split in benzene and toluene are explained by the low values of the surface tension. The good wettability of the graphite surface with benzene, toluene and acetone compared with water allows these liquids to penetrate deep into the pores of graphite. Due to this, maximum splitting is achieved with ultrasonic processing of the mixture. Conclusions on the choice of the optimal liquid medium for dispersing graphite are made.
APA, Harvard, Vancouver, ISO, and other styles
42

Wang, Hong Mei. "Effect of Agitation on Sorption Behavior of Expanded Graphite for Methyl Orange in Water and Crude Oil Floated on Water." Advanced Materials Research 496 (March 2012): 391–94. http://dx.doi.org/10.4028/www.scientific.net/amr.496.391.

Full text
Abstract:
Expanded graphite was used for absorbing methyl orange in water and crude oil floated on water. The effect of agitating sorption system including crude oil or methyl orange, water and expanded graphite on the sorption behavior of expanded graphite for the two materials was investigated, and the sorption mechanism of expanded graphite for the two materials was discussed. The results show that agitating sorption system is advantageous for the methyl orange sorption, but disadvantageous for the crude oil sorption.
APA, Harvard, Vancouver, ISO, and other styles
43

She, Yinhui, Guohua Chen, and Dajun Wu. "Fabrication of polyethylene/graphite nanocomposite from modified expanded graphite." Polymer International 56, no. 5 (2007): 679–85. http://dx.doi.org/10.1002/pi.2191.

Full text
APA, Harvard, Vancouver, ISO, and other styles
44

Kim, Ji Hoon, Gyu Hyeon Shim, Thi To Nguyen Vo, Boyeon Kweon, Koung Moon Kim, and Ho Seon Ahn. "Building with graphene oxide: effect of graphite nature and oxidation methods on the graphene assembly." RSC Advances 11, no. 6 (2021): 3645–54. http://dx.doi.org/10.1039/d0ra10207e.

Full text
Abstract:
In this study, the article investigated the effect of starting graphite sources, and oxidation methods on graphene oxide (GO) synthesis and the porous structure of building assembly into thermally expanded graphene oxide (TEGO).
APA, Harvard, Vancouver, ISO, and other styles
45

Arapov, Kirill, Robert Abbel, Gijsbertus de With, and Heiner Friedrich. "Inkjet printing of graphene." Faraday Discuss. 173 (2014): 323–36. http://dx.doi.org/10.1039/c4fd00067f.

Full text
Abstract:
The inkjet printing of graphene is a cost-effective, and versatile deposition technique for both transparent and non-transparent conductive films. Printing graphene on paper is aimed at low-end, high-volume applications,i.e., in electromagnetic shielding, photovoltaics or,e.g., as a replacement for the metal in antennas of radio-frequency identification devices, thereby improving their recyclability and biocompatibility. Here, we present a comparison of two graphene inks, one prepared by the solubilization of expanded graphite in the presence of a surface active polymer, and the other by covalent graphene functionalization followed by redispersion in a solvent but without a surfactant. The non-oxidative functionalization of graphite in the form of a donor-type graphite intercalation compound was carried out by a Birch-type alkylation, where graphene can be viewed as a macrocarbanion. To increase the amount of functionalization we employed a graphite precursor with a high edge to bulk carbon ratio, thus, allowing us to achieve up to six weight percent of functional groups. The functionalized graphene can be readily dispersed at concentrations of up to 3 mg ml−1in non-toxic organic solvents, and is colloidally stable for more than 2 months. The two inks are readily inkjet printable with good to satisfactory spreading. Analysis of the sheet resistance of the deposited films demonstrated that the inks based on expanded graphite outperform the functionalized graphene inks, possibly due to the significantly larger graphene sheet size in the former, which minimizes the number of sheet-to-sheet contacts along the conductive path. We found that the sheet resistance of printed large-area films decreased with an increase of the number of printed layers. Conductivity levels reached approximately 1–2 kΩ □−1for 15 printing passes, which roughly equals a film thickness of 800 nm for expanded graphite based inks, and 2 MΩ □−1for 15 printing passes of functionalized graphene, having a film thickness of 900 nm. Our results show that ink preparation and inkjet printing of graphene-based inks is simple and efficient, and therefore has a high potential to compete with other conductive ink formulations for large-area printing of conductive films.
APA, Harvard, Vancouver, ISO, and other styles
46

Frąc, Maksymilian, Waldemar Pichór, and Paulina Szołdra. "Cement composites with expanded graphite as resistance heating elements." Journal of Composite Materials 54, no. 25 (April 26, 2020): 3821–31. http://dx.doi.org/10.1177/0021998320921510.

Full text
Abstract:
The following paper presents the results of research on cement composites with expanded graphite as resistance heating elements. Samples of cement mortar were prepared with expanded graphite obtained from intercalated graphite by means of rapid heating at 1000℃. Monotonic and cyclic self-heating tests of cement composites with differing contents of expanded graphite were conducted. In the monotonic self-heating test, the electrical current and the surface temperature of the cement composites with expanded graphite were measured at temperatures 23℃ and –10℃ in order to evaluate their capacity to generate heat. The maximum temperature of composites, the time required to raise the temperature by 10℃, and the power density were determined. Five cycles were applied in the cyclic self-heating test to investigate heat-dependent mechanical properties. The results of the research revealed that cement composites with expanded graphite exhibited promising properties for application as resistance heating elements.
APA, Harvard, Vancouver, ISO, and other styles
47

Li, Li Xin, Zhi Wei Song, Xian Kui Shi, Wen Ze Kang, Hai Jun Zhang, and Hong Li Zhao. "Research Progress and Development of Expanded Graphite in Water Pollution Control." Advanced Materials Research 777 (September 2013): 43–46. http://dx.doi.org/10.4028/www.scientific.net/amr.777.43.

Full text
Abstract:
Expanded graphite is a new porous carbon-based adsorption material with well-developed pore structure and large adsorption capacity for nonpolar molecules pollutants. In this paper, research of the expanded graphite as novel functional carbon material in the fields of environmental remediation of oil pollution and wastewater treatment are reviewed. Based on this, the problems that exist in the current research on expanded graphite in treatment of environmental pollution are analyzed, and the main development trend of research on expanded graphite in the field of water environmental protection is put forward.
APA, Harvard, Vancouver, ISO, and other styles
48

Zhang, Hong. "Microstructure and Anti-Friction Effect of Ball-Milled Expanded Graphite." Advanced Materials Research 704 (June 2013): 110–13. http://dx.doi.org/10.4028/www.scientific.net/amr.704.110.

Full text
Abstract:
Expanded graphite (EG) was ball-milled in a high-energy mill (planetary-type) under an air atmosphere. The products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The anti-friction effect of milled EG used as lubricating additive was investigated. After ball-milling, the relatively ordered graphene planes of original EG become deformed, and the d002 spacing becomes broadened. The milled EG used as lubricating additive have an anti-friction effect, and the effect is more marked than that of original EG.
APA, Harvard, Vancouver, ISO, and other styles
49

Ba, Shu Hong, Chun Hong Jiang, Kang Bo Sun, and Zhen Xing Sun. "Prepared and Infrared Extinction Characteristics of Micron Expanded Graphite." Advanced Materials Research 308-310 (August 2011): 710–14. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.710.

Full text
Abstract:
The micron expanded graphite is prepared by the method of chemical oxidation. Sulfuric acid and ice acetic acid are used as inserting reagent, potassium dichromate is used as an oxidizing agent. The optimum mass ratio is as follows: mC: mH2SO4:mCH3COOH:mK2CrO7=1:5:3:0.5. The reaction time is 60 min and the temperature is at room temperature. The measured result of FTIR, SEM and Laser Particle Size Analyzer show that target product is successfully prepared. Its expanded volume is up to 8.0mlg-1. At the same time, the static and dynamic infrared extinction properties of micron expanded graphite are measured. Results show that the micron expanded graphite has stronger Infrared extinction ability than the raw graphite. The cause is that the surface of micron expanded graphite has some open or semi-open small holes which can obviously absorb infrared radiation.
APA, Harvard, Vancouver, ISO, and other styles
50

Liu, Zhi Guo. "Anti-Friction Effect of Graphite Nonasheets Formed by Sonicating Expanded Graphite." Applied Mechanics and Materials 189 (July 2012): 210–13. http://dx.doi.org/10.4028/www.scientific.net/amm.189.210.

Full text
Abstract:
Graphite nanosheets were prepared by sonicating expanded graphite (EG) in a liquid medium. The products were characterized by scanning electron microscope (SEM), and its anti-friction effect used as additive of base oil was investigated. The influencing factors of its anti-friction effect, the weight ratio of graphite nanosheets to base oil, the sonicating medium and sonicating time, were studied and optimized. The results show that under the optimum conditions the graphite nanosheets exhibit an excellent anti-friction effect.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Expanded graphite' for other source types:
Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography