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Journal articles on the topic 'Polymer graphite composites'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Faddeev, Nikita, Victor Klushin, Denis Tokarev, and Nina Smirnova. "Bio-Based Conductive Polymer Composite Materials for Fuel Cells Bipolar Plates." Key Engineering Materials 869 (October 2020): 591–96. http://dx.doi.org/10.4028/www.scientific.net/kem.869.591.

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Conductive polymer composite materials for polymer electrolyte membrane fuel cells bipolar plates have been successfully prepared from renewable plant biomass sources. The composites are based on various conductive fillers (natural, oxidized and colloidal graphites) and the 5-hydroxymethylfurfural synthesis by-product resin that consists of complex furanic oligomers and polymers. The influences of the resin content and type of conductive filler were investigated. The conductivity of the composite are decreased with increasing resin content, but its mechanical properties are improve. A sample w

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2

da Luz, Fernanda Santos, Fabio da Costa Garcia Filho, Maria Teresa Gómez del-Río, Lucio Fabio Cassiano Nascimento, Wagner Anacleto Pinheiro, and Sergio Neves Monteiro. "Graphene-Incorporated Natural Fiber Polymer Composites: A First Overview." Polymers 12, no. 7 (2020): 1601. http://dx.doi.org/10.3390/polym12071601.

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A novel class of graphene-based materials incorporated into natural lignocellulosic fiber (NLF) polymer composites is surging since 2011. The present overview is the first attempt to compile achievements regarding this novel class of composites both in terms of technical and scientific researches as well as development of innovative products. A brief description of the graphene nature and its recent isolation from graphite is initially presented together with the processing of its main derivatives. In particular, graphene-based materials, such as nanographene (NG), exfoliated graphene/graphite

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Bastiurea, Marian, Magdalena Silvia Rodeanu, Dumitru Dima, Monica Murarescu, and Gabriel Andrei. "Evaluation of Mechanical Properties of Polyester Composite with Graphene and Graphite through Three-Point Bending Test." Applied Mechanics and Materials 659 (October 2014): 22–27. http://dx.doi.org/10.4028/www.scientific.net/amm.659.22.

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Graphenes have aroused great interest among the scientists lately, due to their special physical properties which are supposed to be transferred to composite materials [1,2,3,6]. Some polymers show low mechanical properties which can be improved by adding various types of materials [9,13]. Using nanoparticles, an enhancement of mechanical, thermal and electrical properties can be obtained, even for small contents of additives [10,11,12,14,15,16]. The evaluation of mechanical properties of polymer composites with graphene can be achieved relying on the three-point bending tests [4]. This work p

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4

Wang, Ziming, Yiyang Cao, Decai Pan, and Sen Hu. "Vertically Aligned and Interconnected Graphite and Graphene Oxide Networks Leading to Enhanced Thermal Conductivity of Polymer Composites." Polymers 12, no. 5 (2020): 1121. http://dx.doi.org/10.3390/polym12051121.

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Natural graphite flakes possess high theoretical thermal conductivity and can notably enhance the thermal conductive property of polymeric composites. Currently, because of weak interaction between graphite flakes, it is hard to construct a three-dimensional graphite network to achieve efficient heat transfer channels. In this study, vertically aligned and interconnected graphite skeletons were prepared with graphene oxide serving as bridge and support via freeze-casting method. Three freezing temperatures were utilized, and the resulting graphite and graphene oxide network was filled in a pol

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Kaczor, Daniel, Kacper Fiedurek, Krzysztof Bajer, et al. "Impact of the Graphite Fillers on the Thermal Processing of Graphite/Poly(lactic acid) Composites." Materials 14, no. 18 (2021): 5346. http://dx.doi.org/10.3390/ma14185346.

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To assess the impact of graphite fillers on the thermal processing of graphite/poly(lactic acid) (PLA) composites, a series of the composite samples with different graphite of industrial grade as fillers was prepared by melt mixing. The average size of the graphite grains ranged between 100 µm and 6 µm. For comparative purposes, one of the carbon fillers was expandable graphite. Composites were examined by SEM, FTIR, and Raman spectroscopy. As revealed by thermogravimetric (TG) analyses, graphite filler slightly lowered the temperature of thermal decomposition of the PLA matrix. Differential s

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Valderrama-García, Bianca X., Israel González-Méndez, Alix Sournia-Saquet, Marine Tasse, Kathleen I. Moineau-Chane Ching, and Ernesto Rivera. "Electrosynthesis of thin films of polythiophenes containing pyrene groups and flexible spacers, useful in the preparation of graphene polymer composites." MRS Advances 4, no. 59-60 (2019): 3233–42. http://dx.doi.org/10.1557/adv.2019.410.

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ABSTRACTThin polythiophene films were prepared by electrodeposition, using two novel thiophene monomers containing a pyrene unit linked via a flexible spacer. The obtained polymers have a suitable architecture for the further preparation of polymer composites with graphene via π-π interactions. Physicochemical characterization of the precursor polymers demonstrated that the resulting films are made of homogeneous electroactive polythiophene with pendant pyrene units regularly located on the polymer surface. These compounds are highly emissive and easily form excimers as other high pyrene conte

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Zhang, Xiao, Jian Zheng, Yong Qiang Du, and Chun Ming Zhang. "Three-Dimensional Graphite Filled Poly(Vinylidene Fluoride) Composites with Enhanced Strength and Thermal Conductivity." Key Engineering Materials 842 (May 2020): 63–68. http://dx.doi.org/10.4028/www.scientific.net/kem.842.63.

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Three-dimensional (3D) network structure has been recognized as an efficient approach to enhance the mechanical and thermal conductive properties of polymeric composites. However, it has not been applied in energetic materials. In this work, a fluoropolymer based composite with vertically oriented and interconnected 3D graphite network was fabricated for polymer bonded explosives (PBXs). Here, the graphite and graphene oxide platelets were mixed, and self-assembled via rapid freezing and using crystallized ice as the template. The 3D structure was finally obtained by freezing-dry, and infiltra

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Bas, Ayse B., Oktay Yilmaz, Anil Ibis, Mustafa Dogu, Kadir Kirkkopru, and Fatma S. Guner. "Melt flow properties of graphite nanoplatelets-filled polypropylene." Journal of Composite Materials 51, no. 19 (2016): 2793–804. http://dx.doi.org/10.1177/0021998316675502.

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Rheological behavior of polypropylene/graphite nanoplatelet composites of varying content, temperature, and filler shape was investigated by capillary and rotational rheometers. Scanning electron microscope images were taken in order to examine the filler shape and interaction between fillers and polymer matrix. Viscosity measurements of polypropylene/graphite composites showed shear thinning behavior like neat polypropylene. Filler inclusion resulted in increase in shear viscosity and shear thinning behavior of composites. The effect of filler concentration on viscosity is more appreciable in

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Tucker, W. C. "Degradation of Graphite/Polymer Composites in Seawater." Journal of Energy Resources Technology 113, no. 4 (1991): 264–67. http://dx.doi.org/10.1115/1.2905910.

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Glass-reinforced plastics have a substantial history of use in seawater. With the advent of high-performance graphite fibers offering greater stiffness than glass, some marine engineering applications may be implemented where glass was unsuitable. However, the nobility of graphite in the galvanic series makes it an extremley efficient cathode when copuled with metals in seawater. Degradation of the cathodic composite material is an unexpected result of the corrosion chemistry in natural seawater. Deep submergence of composite materials introduces another potential degradative mechaism in seawa

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10

Hendrix, Justin, Ryan Szeto, Thomas Nosker, Jennifer Lynch-Branzoi, and Thomas Emge. "Evaluation of Exfoliated Graphite to Graphene in Polyamide 66 Using Novel High Shear Elongational Flow." Polymers 10, no. 12 (2018): 1399. http://dx.doi.org/10.3390/polym10121399.

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Graphene has been publicized as the game changing material of this millennium. To this day, scalable production leading to exceptional material properties has been difficult to attain. Most methods require harsh chemicals, which result in destroying the graphene surface. A method was developed, exploiting high speed elongational flow in a novel designed batch mixer; creating a distribution of pristine few to many layer graphene flakes. The method focuses on exfoliating in a molten polyamide 66 (PA66) matrix, creating a graphene reinforced polymer matrix composite (G-PMC). The process revealed

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Faddeev, Nikita, Denis Tokarev, Tatyana A. Molodtsova, Maxim Belichenko, and Victor Klushin. "Fluoroplastic- and Bio-Based Composites Materials for PEM Fuel Cells Bipolar Plates." Key Engineering Materials 899 (September 8, 2021): 192–201. http://dx.doi.org/10.4028/www.scientific.net/kem.899.192.

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Conductive polymer composite materials for polymer electrolyte membrane fuel cells bipolar plates have been successfully prepared from renewable plant biomass sources and copolymers of tetrafluoroethylene with vinylidenefluoride. The composites are based on various conductive fillers (natural, oxidized and colloidal graphite’s) and polymer binder (the 5-HMF synthesis by-product or fluoroplastic). The influences of type and content of binder and type of conductive filler on the mechanical properties and conductivity were investigated. Conductivity of the composites decreases with increasing of

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Tahir, Furqan, Abdelnasser Mabrouk, Sami G. Al-Ghamdi, et al. "Sustainability Assessment and Techno-Economic Analysis of Thermally Enhanced Polymer Tube for Multi-Effect Distillation (MED) Technology." Polymers 13, no. 5 (2021): 681. http://dx.doi.org/10.3390/polym13050681.

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Metal-alloys tubes are used in the falling-film evaporator of the multi-effect distillation (MED) that is the dominant and efficient thermal seawater desalination process. However, the harsh seawater environment (high salinity and high temperature) causes scale precipitation and corrosion of MED evaporators’ metal tubes, presenting a serious technical challenge to the process. Therefore, the metal/metal alloys used as the material of the MED evaporators’ tubes are expensive and require high energy and costly tube fabrication process. On the other hand, polymers are low-cost, easy to fabricate

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Shohih, Esa N., Mujtahid Kaavessina, Henry A. S. Lomi, Betha P. Pratiwi, Sperisa Distantina, and Achmad Chafidz. "Preparation and Characterization of Micro-Graphite Filled Poly(Lactic Acid) Composites: Part 1 - Rheological and Thermal Properties." Materials Science Forum 981 (March 2020): 138–43. http://dx.doi.org/10.4028/www.scientific.net/msf.981.138.

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Conductive polymer composites (CPCs) have attracted great attention of researchers due to their enhanced properties such as an adjustable electrical conductivity, good processability, good mechanical and thermal properties, etc. CPCs had many potencies for wider application in electronic devices. Poly (lactic acid) or PLA is one of the interesting polymers used in the developing of these new important materials. PLA properties are comparable to the synthetic petroleum-based polymers such as polyethylene terephthalate (PET), polypropylene (PP), etc. This research focuses on studying the rheolog

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14

Cunha, Eunice, and Maria Paiva. "Composite Films of Waterborne Polyurethane and Few-Layer Graphene—Enhancing Barrier, Mechanical, and Electrical Properties." Journal of Composites Science 3, no. 2 (2019): 35. http://dx.doi.org/10.3390/jcs3020035.

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Graphene has excellent mechanical, thermal, and electrical properties. Graphene can serve as potential reinforcement in polymer-based nanocomposites. In order to achieve this goal, graphene has to be distributed homogeneously and dispersed throughout the polymer matrix, establishing a strong interface with the polymer. Solution mixing is an interesting method for the preparation of homogeneous nanocomposites, in particular when using environmentally friendly solvents such as water. The major difficulty met in the production of graphene/polymer composites concerns the preparation and stabilizat

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15

Gubarevich, Anna V., Kazuki Komoriya, and Osamu Odawara. "Electromagnetic Interference Shielding Efficiency in the Range 8.2-12.4 GHz of Polymer Composites with Dispersed Carbon Nanoparticles." Eurasian Chemico-Technological Journal 14, no. 1 (2011): 55. http://dx.doi.org/10.18321/ectj100.

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In the present work, electromagnetic interference shielding properties of polymer composites with dispersed cup-stacked carbon nanotubes, graphite nanoparticles and carbon black were investigated. The polymer composites with carbon nanoparticles content from 1 to 5 w% were successfully prepared by the coagulation method, and composite sheets with thickness from 0.25 to 0.77 mm were formed by the hot press technique. The electromagnetic interference shielding efficiency measured in the frequency range of 8.2~12.4 GHz (X-band) of cup-stacked carbon nanotubes/polymer composite was considerably hi

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Munirah Abdullah, Nur, A. Z. M. Rus, and M. F. L. Abdullah. "Enhancement of Graphite Functionality in Renewable Polymer Composite Properties." International Journal of Engineering & Technology 7, no. 3.14 (2018): 215. http://dx.doi.org/10.14419/ijet.v7i3.14.16896.

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The preparation and characterization of composite thin films of renewable polymer graphite (PG) is disclosed. Thin films ~ 0.1 mm thick are prepared using a simple solution mixing with mass proportion of 2/1 (renewable monomer/ Methylene Diphenyl Diisocyanate, MDI), upon differ graphite content (PG0, PG5, PG10, PG15, PG20, PG25 andPG30) and drop casting at room temperature. The morphology-structure relations of renewable PG composites with respect to electrical conductivity were diagnosed using Optical microscope (OM), Fourier transform infra-red spectroscopy (FTIR) and Thermogravimetric analy

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17

Kim, D., and M. Ramulu. "Study on the Drilling of Titanium/Graphite Hybrid Composites." Journal of Engineering Materials and Technology 129, no. 3 (2007): 390–96. http://dx.doi.org/10.1115/1.2744397.

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Titanium/graphite hybrid composites (TiGr) are a potentially enabling technology which satisfies the low structural weight fraction and long operational lifetime required for the high-speed civil transport. TiGr composites are made of thermoplastic polymer matrix composite plies with titanium foils as the outer plies. The two materials are assembled by bonding the polymer matrix composite plies and titanium foils to form a hybrid composite laminate. Both experimental and analytical work has been performed to characterize major hole quality parameters and cutting mechanisms encountered in drill

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18

Babu, Karthik, Gabriella Rendén, Rhoda Afriyie Mensah, et al. "A Review on the Flammability Properties of Carbon-Based Polymeric Composites: State-of-the-Art and Future Trends." Polymers 12, no. 7 (2020): 1518. http://dx.doi.org/10.3390/polym12071518.

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Carbon based fillers have attracted a great deal of interest in polymer composites because of their ability to beneficially alter properties at low filler concentration, good interfacial bonding with polymer, availability in different forms, etc. The property alteration of polymer composites makes them versatile for applications in various fields, such as constructions, microelectronics, biomedical, and so on. Devastations due to building fire stress the importance of flame-retardant polymer composites, since they are directly related to human life conservation and safety. Thus, in this review

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19

Bajpai, Ankur, Prateek Saxena, and Klaus Kunze. "Tribo-Mechanical Characterization of Carbon Fiber-Reinforced Cyanate Ester Resins Modified With Fillers." Polymers 12, no. 8 (2020): 1725. http://dx.doi.org/10.3390/polym12081725.

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High-performance polymer composites are being increasingly favored for structural applications. For this purpose, efforts are being focused on exploring the potential of high-performance thermoplastics and thermosets. Cyanate ester (CE) resin is a special thermoset that can be used at up to 400 °C without any considerable degradation; however, its tribological properties are not at the adequate level. Hence, it is needed to use this polymer in composite form with the fibrous/particulate reinforcement to impart better tribological properties and mechanical strength via a strong fiber–matrix int

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20

Tavman, Ismail H. "Preparation and Characterization of Conductive Polymer Nanocomposites Based on Ethylene–Vinylacetate Copolymer (EVA) Reinforced with Expanded and Unexpanded Graphite." Advanced Materials Research 1114 (July 2015): 92–99. http://dx.doi.org/10.4028/www.scientific.net/amr.1114.92.

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Recently polymer nanocomposites are used more and more frequently in industry due to the fact that the properties of the polymers can be altered to the specific requirements by the addition of particles and fibers of different properties, shapes. Polymers are poor thermal and electrical conductors, conductive fillers such as metallic powders, carbon black, graphite, are usually incorporated into polymer matrix to produce conducting composites. In this study composites were prepared using ethylenevinyl acetate (EVA) copolymer as matrix filled with two kinds of reinforcement graphite materials:

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21

Tucker, Wayne C. "Crystal Formation on Graphite/Polymer Composites." Journal of Composite Materials 22, no. 8 (1988): 742–48. http://dx.doi.org/10.1177/002199838802200803.

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22

Keshavamurthy, R., Vijay Tambrallimath, Ali A. Rajhi, et al. "Influence of Solid Lubricant Addition on Friction and Wear Response of 3D Printed Polymer Composites." Polymers 13, no. 17 (2021): 2905. http://dx.doi.org/10.3390/polym13172905.

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In this study, acrylonitrile butadiene styrene (ABS) and graphite powder—a solid lubricant—were filled and characterized for friction and wear responses. The fused deposition modeling (FDM) technique was utilized to synthesize ABS–graphite composites. A twin-screw extrusion approach was employed to create the composite filament of graphite–ABS that is suitable for the FDM process. Three graphite particle ratios ranging from 0% to 5% were explored in the ABS matrix. The wear and friction properties of ABS composites were examined using a pin on disc tribometer at varied sliding velocities and w

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Liu, Yue E., Cheng En He, Ren Gui Peng, Wei Tang, and Ying Kui Yang. "Ionic Liquid Assisted Dispersion of Reduced Graphene Oxide in Epoxy Composites with Improved Mechanical Properties." Advanced Materials Research 738 (August 2013): 56–60. http://dx.doi.org/10.4028/www.scientific.net/amr.738.56.

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Graphene nanosheets were prepared by chemical reduction of the exfoliated graphite oxide using sodium borohydride (NaBH4). The graphene/epoxy composites were separately fabricated in the absence or presence of imidazolium-based ionic liquids, and their dynamic thermomechanical and tensile properties were studied. TEM examinations show that graphene sheets are well dispersed in the epoxy resin and have strong interface adhesion with the matrix due to the π-π and/or cation-π interactions between graphene and imidazolium ions. The composite fabricated by assistance of ionic liquids shows larger i

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Kim, Seojin, Weontae Oh, Jong-Seong Bae, et al. "Heating Characteristics of Films Prepared with Polymer-Graphite Composites." International Journal of Polymer Science 2019 (August 19, 2019): 1–8. http://dx.doi.org/10.1155/2019/3478325.

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Heating films were prepared by using poly(methyl methacrylate) and polybutadiene composites containing graphite. The heating film was prepared by casting the as-made polymer composite on the PET film. Copper electrodes were attached to both ends of the as-prepared film, and the heating characteristics of the film were analyzed while applying the DC voltage. The electrical conductivity and the heating temperature of the heating films depended on the size, the structure, the content, and the dispersion characteristics of the graphite in the composite. The electrical resistance of the heating fil

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Beeva, D. A., A. M. Abaev, A. A. Beev, and A. K. Mikitaev. "Composite Materials Based on Graphite and Polyhydroxy Ether of Bisphenol A." International Polymer Science and Technology 44, no. 9 (2017): 23–28. http://dx.doi.org/10.1177/0307174x1704400905.

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Composites based on polyhydroxy ether and graphite of industrial grades MPG and GL were produced and investigated. Methods were developed for introducing graphite into the polymer matrix. It was shown that preliminary oxidative surface treatment of the graphite leads to the selective adsorption of monomers on its surface, which lowers the rate of the reaction in situ during the production of the composites. It was shown that the method for introducing the graphite and the amount of the latter have a considerable influence on the properties of the composite obtained.

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Cao, Peng, Shu Hua Qi, and Sha Sha Li. "Preparation and Thermal Properties of Novolac Resin/Graphite Nanosheet Composites." Advanced Materials Research 391-392 (December 2011): 209–13. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.209.

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In this study, a high thermal conductivity novolac resin /graphite nanosheet composite have been prepared via in situ polymerization at the presence of sonicated expanded graphite. Graphite nanosheets prepared via powering the expanded graphite had a thickness ranging 10~100 nm and a diameter range 5~10μm and were excellent nanofiller for the fabrication of polymer/graphite nanocomposite. Scanning election microscopy was used to characterize the structure and dispersion of the graphite nanosheets and the composites. The results showed that the structure of the nanosheets played an important ro

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Sirenko, H. O., L. M. Soltys, V. P. Svidersky, and I. V. Sulyma. "The Effect of Nature and Parameters of Particle Size Distribution of Graphite on Physical and Mechanical Properties of Polimer Composites based on Aromatic Poliamide." Фізика і хімія твердого тіла 17, no. 4 (2016): 611–20. http://dx.doi.org/10.15330/pcss.17.4.611-620.

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The resultsof studies of the effect of nature and parameters of particle size distribution of graphite on physical and mechanical properties of polymer composites based on aromatic polyamide fenіlon C-2. The particle size of the filler and polymer for the theoretical gamma-distribution parameters (perimeter, thickness and diameter) have different values. Found the influence of fillers (natural graphite different bands), which differed ash content (5-15% and 0,05-2,5%), moisture and grinding fineness (dispersion) on the wear resistance of the samples of the polymer composite. There is non-linea

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Gauvin, Florent, Patrice Cousin, and Mathieu Robert. "Effect of modified graphene oxide on the mechanical, thermal, and barrier properties of vinylester." Journal of Composite Materials 52, no. 28 (2018): 3853–64. http://dx.doi.org/10.1177/0021998318770730.

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Graphene, which is a one atom thick layer of graphite, has been considerably studied in the past decade due to its extraordinary physical properties. The development of new routes of synthesis facilitates the use of graphene in polymer nanocomposite. The addition of very small amounts (<1%) of graphene in a polymer matrix does not only increase its thermal and mechanical properties, but it would also enhance permeability, by limiting the diffusion of water through the material. Graphene-polymer nanocomposite would be an interesting alternative to conventional polymer nanocomposite such as n

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Chung, Yong-Chan, Ho-Sung Kim, and Byoung Chul Chun. "Functionalization and Chemical Linking of Reduced Graphene Oxide or Graphite onto Polyurethane and the Impact on the Tensile Strength and Sheet Resistance of Polymer Composites." Polymers and Polymer Composites 26, no. 2 (2018): 141–53. http://dx.doi.org/10.1177/096739111802600202.

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Reduced graphene oxide (RGO) or graphite is functionalized with hydroxyl groups for linking to the sides of polyurethane (PU) chains. Blended PU with RGO or graphite is prepared as a control for comparison. The PU composites are compared with respect to their spectroscopic, thermal, mechanical, shape memory, and sheet resistance properties. Scanning electron microscopy images demonstrate the good distribution of functionalized graphene oxide (FGO) or functionalized graphite (FG) particles on the inner surface of the PU. The linking of FGO or FG onto PU does not significantly affect the thermal

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SKONECZNY, Władysław, Sławomir KAPTACZ, Adrian BARYLSKI, and Tomasz KMITA. "ANALYSIS OF TRIBOLOGICAL PROPERTIES OF SELECTED PTFE-BASED POLYMER COMPOSITES IN A SLIDING INTERACTION WITH ALUMINIUM OXIDE (Al2O3)." Tribologia 280, no. 4 (2018): 107–12. http://dx.doi.org/10.5604/01.3001.0012.7550.

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The paper presents the microstructure and mechanical and tribological properties of polymer composites based on polytetrafluoroethylene (PTFE) intended for use in friction couples where reciprocating motion is performed, e.g., in compressors or actuators. Micromechanical tests carried out using the Oliver-Pharr method showed that the PTFE composite with a 40% bronze content (T8B) had the most advantageous mechanical properties (hardness H, Young’s modulus E). In turn, tribological tests that were conducted using a ballon- disc tester in the linear (reciprocating) motion showed that the polytet

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Arunachalam, Balajik Rishna Bharathi, Ramesh Bapu Br, and jayabalakrishnan Duraivelu. "Experimental Study on Graphene Coating Thermosetting Epoxy Polymer for the Manufacture of Electronic Circuit Boards." Materiale Plastice 58, no. 1 (2021): 167–75. http://dx.doi.org/10.37358/mp.21.1.5456.

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Graphene is a microstructure of graphite that has enormous properties and is also one of the carbon allotropes. There are several metals with low strength. The properties of these metals can be increased by coating the graphene. The primary goal of the work is to create composite graphene that exhibits the optimised properties and characteristics that meet the requirements of the industries. The properties of graphene when coated with other metals are studied and their applications in different industrial fields are analysed through several tests and experiments. Research-based on graphene coa

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Abdullah, Nur Munirah, A. Z. M. Rus, M. F. L. Abdullah, and Hanani Abd Wahab. "Electrical profile of ultra violet (UV) curable renewable polymer graphite (PG) composites." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 1 (2020): 459. http://dx.doi.org/10.11591/ijpeds.v11.i1.pp459-465.

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<span>The electrical profiles of the renewable polymer graphite (PG) composites upon ultra violet (UV) curing were investigated. Renewable PG films were prepared by mixing with varying weight percent of graphite (with an increment of 5 wt. % of prepared graphite) up to 30 wt.% and crosslinker. Then, the composites solution was slip casted and cured upon stimulated UV irradiation (UV accelerated weathering tester) at different time exposure (up to 1000 hours) was applied. Small changes on the functional groups of the composites were observed due to UV exposure time by Fourier Transform In

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Che Berhanuddin, Nurul Idani, Syaiful Azmirul Mohd Rozlan, Izzuddin Zaman, Mohammad Sukri Mustapa, Mohd Ezree Abdullah, and Ida Aryanie Bahrudin. "Effect of Thermal Expansion and Sonication on Mechanical Properties and Adhesive Toughness Measurement of Polymer/Graphene Composite." Materials Science Forum 889 (March 2017): 14–18. http://dx.doi.org/10.4028/www.scientific.net/msf.889.14.

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Graphite has attracted both academia and researchers due to its outstanding properties such as having strength 200 times stronger than steel, great efficiency of heat and electricity conduction, low cost and also facile fabrication. In this study, two facile approaches of producing nanosize graphite were performed; thermal expansion and sonication. Graphite that was produced are used as reinforcement in epoxy composite for adhesive applications. In order to determine the mechanical properties of the composite, tensile test was performed using Dumbbell shape of sample. The outcome of the test s

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Marat-Mendes, R., I. Rodrigues, and CG Figueiredo-Pina. "Evaluation of tribological performance of carbon fibre reinforced epoxy composites loaded with graphite platelets under reciprocating linear motion." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 10 (2019): 1415–23. http://dx.doi.org/10.1177/1350650119826443.

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The objective of this work was to evaluate the effect of graphite platelets used as matrix epoxy polymer reinforcement in the sliding reciprocating wear performance of carbon fibre composites. First, epoxy reinforced composites with different amounts of graphite in weight were produced (0, 7.5, 11.5 and 30 wt %) to ascertain the optimal composition regarding wear resistance. Additionally, carbon fibre reinforced polymer composites were produced, with and without the addition of 7.5 wt% graphite platelets to the polymer matrix, and its wear resistance was also evaluated. The laminated carbon fi

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Abdullah, Nur Munirah, M. Saddam Kamarudin, Anika Zafiah M. Rus, and M. F. L. Abdullah. "Preparation of Conductive Polymer Graphite (PG) Composites." IOP Conference Series: Materials Science and Engineering 226 (August 2017): 012181. http://dx.doi.org/10.1088/1757-899x/226/1/012181.

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Zhang, Hong Yan, Xi Shi Tai, and Hai Quan Wang. "Preparation and Characterization of Unsaturated Polyester/Graphite Nanosheets Composites under Electric Field." Applied Mechanics and Materials 182-183 (June 2012): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amm.182-183.33.

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As a conductive fillers, graphite nanosheets can be induced by the AC electric field in unsaturated polyester resin and then prepared oriented unsaturated polyester resin/graphite nanosheets composite. We investigate the preparation, configuration and capability of the unsaturated resin/ graphite nanosheets conductive composites and the oriented theory of the graphite nanosheets induced in the electric field. The measures and observation of scanning electron microscopy(SEM), X-ray diffraction(XRD), electric current have shown that the graphite nanosheets are oriented by electric field which we

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Czajka, Michael, Robert A. Shanks, and Ing Kong. "Preparation of graphene and inclusion in composites with poly(styrene-b-butadiene-b-styrene)." Science and Engineering of Composite Materials 22, no. 1 (2015): 7–16. http://dx.doi.org/10.1515/secm-2013-0119.

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AbstractThe aim of this work was to prepare and characterize nanocomposites containing graphene from intercalated graphite. The graphene was produced by rapid thermal expansion using expandable graphite oxide or obtained commercially. The polymer used was poly(styrene-b-butadiene-b-styrene) (SBS). The SBS was dissolved in p-xylene and the graphene was ultrasonically suspended in the xylene solution. The morphology, dynamic mechanical, electrical, and thermal properties of composites were characterized. Graphene at 1% (w/w) (hydrogen atmosphere) was found to increase the storage modulus (68%) a

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Chiang, Chin-Lung, Chien-Wei Hsu, Hsiu-Ming Wu, and Ming-Yuan Shen. "Dispersion technology on mechanical properties of carbon nanomaterials reinforced epoxy nanocomposites." Modern Physics Letters B 34, no. 07n09 (2020): 2040019. http://dx.doi.org/10.1142/s0217984920400199.

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Graphene nanoplatelets (GNPs) are platelet-liked graphite nanocrystals with multigraphene layers. In general, a high contact area between polymer and nanofiller maximizes stress transfer from the polymer matrix to nanofillers. Therefore, GNPs can be expected to exhibit better reinforcement than CNTs in polymer composites, because of their ultrahigh aspect ratio (600–10,000) and higher surface constant area. The GNPs planar structure provides a 2D path for phonon transport, and the ultrahigh surface area allows a large surface contact area with polymer resulting in the enhancement of the compos

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Galikhanov, M. F., R. Ya Deberdeev, and E. N. Mochalova. "Investigating the Electret Properties of Polystyrene and Graphite Composites." International Polymer Science and Technology 44, no. 1 (2017): 49–52. http://dx.doi.org/10.1177/0307174x1704400110.

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Coronoelectrets based on composites of polystyrene with a conductive filler – graphite – were studied. It was shown that the introduction of up to 8 vol% filler into the polymer raises the level and the time and thermal stability of its electret properties. By controlling the ratio of the components in the composite, it is possible to create electrets with prescribed properties.

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Sathees Kumar, Sekaran, and Ganesan Kanagaraj. "Effect of graphite and silicon carbide fillers on mechanical properties of PA6 polymer composites." Journal of Polymer Engineering 37, no. 6 (2017): 547–57. http://dx.doi.org/10.1515/polyeng-2015-0441.

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Abstract In this paper, the combined effect of different weight percentages of silicon carbide (SiC) and graphite (Gr) reinforcement on the mechanical properties of polyamide (PA6) composite is studied. Test specimens of pure PA6, 85 wt% PA6+10 wt% SiC+5 wt% Gr and 85 wt% PA6+5 wt% SiC+10 wt% Gr are prepared using an injection molding machine. The tensile, impact, hardness, morphology and thermal properties of the injection molded composites were investigated. The obtained results showed that mechanical properties, such as tensile and impact strength and modulus of the PA6 composites, were sig

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Cao, Q., Q. G. Cao, X. X. Qiu, and J. Song. "Effects of Expanded Graphite, Aluminum Hydroxide, and Kaolin on Flame Retardancy and Smoke Suppression of Polyurethane Composites." International Polymer Processing 36, no. 1 (2021): 3–12. http://dx.doi.org/10.1515/ipp-2020-3950.

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Abstract Polyurethane is a widely used polymer that has good abrasion resistance and low-temperature resistance. However, polyurethane composite materials are highly inflammable and thus require the use of flame retardants. This study selected green and environment-friendly flame retardants such as expanded graphite, aluminum hydroxide, and kaolin to be used as individual or paired retardants to produce polyurethane composites. By analyzing the potential and mechanical properties of the polyurethane composites, it was found that the composite material with the flame retardant composed of graph

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Ślosarczyk, Agnieszka, and Piotr Krawczyk. "Influence of expanded graphite coming from the electrochemical oxidation of phenol on cement-polymer matrix." Polish Journal of Chemical Technology 18, no. 4 (2016): 5–8. http://dx.doi.org/10.1515/pjct-2016-0063.

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Abstract In presented article the polymer-modified cement mortars with expanded graphite covered by the oligomer film, being a by-product of phenol electro-oxidation, were investigated. The changes in the morphology of EG and EG/oligomer as well as in the microstructure of cement-polymer composites modified with EG/oligomer were verified using the scanning electron microscopy (SEM). The evaluation of adhesion between EG/oligomer and cement-polymer mortar based on the mechanical tests, especially their flexural behavior. It was shown that the oligomer film formed on EG surface made graphite fla

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de Abreu Martins, Silvana, João Marciano Reis, and Heraldo da Costa Mattos. "Influence of Graphite Powder and Carbon Black Weight Percentages on the Electrical Properties of Epoxy Composite Plates." Materials Science Forum 869 (August 2016): 366–70. http://dx.doi.org/10.4028/www.scientific.net/msf.869.366.

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There is a growing demand for polymeric composite materials, mainly, in industrial applications. For instance, bipolar plates for polymer electrolyte fuel cell in automobile applications. This kind of composite can replace with lower cost and greater efficiency metallic components. The basic requirement is that the composite must possess adequate electrical and mechanical properties for the particular application. The goal of the present paper is to analyze the effect of graphite powder and carbon Black weight percentages on the electrical properties of epoxy composite plates. Electrical condu

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Evstigneev, Alexandr, Vladimir Smirnov, and Vitaliy Gladkikh. "Structure of intumescent epoxy composites with expandable graphite." E3S Web of Conferences 91 (2019): 07015. http://dx.doi.org/10.1051/e3sconf/20199107015.

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Currently, thermoset-based polymer matrix composites are widely used for production of fire protective coatings. Intumescent properties of such coatings are highly dependent on composition. Expandable graphite is a prospective intumescent admixture; unfortunately, admixture of expandable graphite alone can lower the integrity of char residue down to unacceptable levels. The objective of the present work is to present the method that can be used for elimination of the mentioned drawback. The limiting values of expandable graphite in composite with two different admixtures - ammonium polyphospha

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Oh, Kyung Seok, S. I. Heo, J. C. Yun, and Kyung Seop Han. "Characterization of Expanded Graphite/Flake-Type Graphite Filled Conductive Polymer Composites." Advanced Materials Research 33-37 (March 2008): 515–20. http://dx.doi.org/10.4028/www.scientific.net/amr.33-37.515.

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Conductive polymer composites (CPCs) consisting of expanded graphite (EG), flake-type graphite (FG) and thermalsetting resin were fabricated by means of a preform molding technique. Conductive fillers, EG and FG, were mechanically mixed with the phenol resin to provide an electrical property to composites. The filler loadings were fixed at 75wt.% to obtain a high electrical conductivity. The mechanical and electrical properties of CPCs were optimized according to the weight ratio and the particle size of FG. As the weight ratio increased, the flexural strength increased, however, the electrica

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Monticelli, Orietta, Sergio Bocchini, Alberto Frache, Erika Simona Cozza, Ornella Cavalleri, and Luigi Prati. "Simple Method for the Preparation of Composites Based on PA6 and Partially Exfoliated Graphite." Journal of Nanomaterials 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/938962.

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In the present work, the preparation of composite systems based on polyamide 6 (PA6) and exfoliated graphite was attempted by applying a simple procedure, which consists of a preliminary dispersion/exfoliation of graphite in the monomer, namely, ɛ-caprolactam (CL), and a subsequent polymerization of the above system. Atomic force microscopy (AFM) demonstrated specific interactions between CL and graphite surface. The dispersion of graphite in the monomer and polymer was assessed by scanning (SEM) and transmission (TEM) electron microscopy, while mechanical tests allowed to evaluate the influen

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Guo, Rui Bin, Zun Li Mo, Xiao Bo Zhu, and Sheng Rong Yang. "Molecular Simulation Study Conformation and Energy of Polyaniline/Graphite Composites." Advanced Materials Research 842 (November 2013): 134–37. http://dx.doi.org/10.4028/www.scientific.net/amr.842.134.

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Under the COMPASS (condensed-phase optimized molecular potentials for atomistic simulation studies) force field, the MD (molecular dynamics) simulation was applied to Polyaniline/ Graphite Composites. In this paper, we briefly introduced the constructive process of the composite system by means of MD simulation. The stability and mechanism of five intercalation composites were studied with microcosmic figure and variational energy under the invariable NVT ensemble. The results indicate that the area of graphite sheets is particularly important in the intercalation bonding process. It is the ke

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Salahuddin, Bidita, Shaikh N. Faisal, Tajwar A. Baigh, et al. "Carbonaceous Materials Coated Carbon Fibre Reinforced Polymer Matrix Composites." Polymers 13, no. 16 (2021): 2771. http://dx.doi.org/10.3390/polym13162771.

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Carbon fibre reinforced polymer composites have high mechanical properties that make them exemplary engineered materials to carry loads and stresses. Coupling fibre and matrix together require good understanding of not only fibre morphology but also matrix rheology. One way of having a strongly coupled fibre and matrix interface is to size the reinforcing fibres by means of micro- or nanocarbon materials coating on the fibre surface. Common coating materials used are carbon nanotubes and nanofibres and graphene, and more recently carbon black (colloidal particles of virtually pure elemental ca

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Deng, Sha, Jinwen Wang, Guiying Zong, Feng Chen, Songgang Chai, and Qiang Fu. "Effect of chain structure on the thermal conductivity of expanded graphite/polymer composites." RSC Advances 6, no. 12 (2016): 10185–91. http://dx.doi.org/10.1039/c5ra26272k.

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Corso, Marla, Ana Carolina de Dias Albuquerque, Lídia Pereira Amaro, et al. "Graphene oxide synthesis for composite material preparation." Revista Ibero-Americana de Ciências Ambientais 10, no. 1 (2019): 157–66. http://dx.doi.org/10.6008/cbpc2179-6858.2019.001.0013.

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Graphene, a material formed by carbon atoms with sp2 hybridization in a hexagonal arrangement, has differentiated characteristics in comparison to commercial materials such as high flexibility, high electrical and thermal conductivity, and strong resistance due to the organized structure of the material and can be applied in several branches of research. The best-known method for the production of graphene is the exfoliation of graphite using the methodology proposed by Hummers, in which the commercial graphite is oxidized obtaining as final product the graphene oxide that can be converted int

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