Preparation and structure analysis of carbon/carbon composite made from phenolic resin impregnation into exfoliated graphite

Chen, X.; Zheng, Yong; Kang, Feiyu; Shen, Wei

doi:10.1016/j.jpcs.2006.01.087

Cited by 22 publications

(5 citation statements)

References 9 publications

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“…Recently, nanomaterials have been opening a wide window of applications due to their structural features and special properties on a nanometer scale . To date, carbon-based nanofillers, such as carbon black (CB), − carbon nanotubes (CNTs), − graphene, − functionalized graphene, − and carbon nanofibers (CNF), − have been extensively used to prepare polymer nanocomposites. Among them, CNTs seem to be very effective fillers for reinforcement of polymers. , However, the major drawbacks of CNTs as nanofillers are the difficulty in dispersion in polymer matrices and high production cost .…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl alcohol) Nanocomposites Filled with Poly(vinyl alcohol)-Grafted Graphene Oxide

Cheng

Sahoo

Tan

et al. 2012

ACS Appl. Mater. Interfaces

246

160

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We present a novel approach to the fabrication of advanced polymeric nanocomposites from poly(vinyl alcohol) (PVA) by incorporation of PVA-grafted graphene oxide. In this work, we have synthesized PVA-grafted graphene oxide (PVA-g-GO) for the strong interfacial adhesion of graphene oxide (GO) to the PVA matrix. It was found that the mechanical properties of PVA were greatly improved by incorporating PVA-g-GO. For example, the tensile strength and Young's modulus of the PVA nanocomposite films containing 1 wt % net GO in the PVA-g-GO significantly increased by 88 and 150%, respectively, as compared to unfilled PVA. The elongation at break was also increased by 22%, whereas the GO/PVA nanocomposite containing 1 wt % pristine GO was decreased by 15%. Therefore, the presence of the PVA-g-GO in the PVA matrix could make the PVA not only stronger but also tougher. The strong interfacial adhesion between PVA-g-GO and the PVA matrix was attributed to the good compatibility between PVA-g-GO and the matrix PVA as well as the hydrogen-bonding between them.

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Section: Introductionmentioning

confidence: 99%

Poly(vinyl alcohol) Nanocomposites Filled with Poly(vinyl alcohol)-Grafted Graphene Oxide

Cheng

Sahoo

Tan

et al. 2012

ACS Appl. Mater. Interfaces

246

160

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“…Clay minerals are not characterized by good conductivity and thermal properties 7 thus the use of carbon-containing nanofi llers, e.g. carbon black, expanded graphite and carbon nanotubes (CNTs) may enable novel applications [8][9][10] . CNTs are among carbon nanofi llers that have the most effective conductivity 11 .…”

Section: Introductionmentioning

confidence: 99%

Morphology and the physical and thermal properties of thermoplastic polyurethane reinforced with thermally reduced graphene oxide

Strankowski

Piszczyk

Kosmela

et al. 2015

Polish Journal of Chemical Technology

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In this study, thermally reduced graphene oxide (TRG)-containing polyurethane nanocomposites were obtained by the extrusion method. The content of TRG incorporated into polyurethane elastomer systems equaled 0.5, 1.0, 2.0 and 3.0 wt%. The morphology, static and dynamic mechanical properties, and thermal stability of the modifi ed materials were investigated. The application of TRG resulted in a visible increase in material stiffness as confi rmed by the measurements of complex compression modulus (E') and glass transition temperature (T g ). The T g increased with increasing content of nanofi ller in the thermoplastic system. The addition of thermally reduced graphene oxide had a slight effect on thermal stability of the obtained materials. The incorporation of 0.5, 1.0, 2.0 and 3.0 wt% of TRG into a system resulted in increased char residues compared to unmodifi ed PU elastomer. Also, this study demonstrated that after exceeding a specifi c amount of TRG, the physicomechanical properties of modifi ed materials start to deteriorate.

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“…Electrically conducting nanocomposites using exfoliated graphite have been a major attraction in recent years. There are studies on exfoliated graphite composites based on a variety of polymers including PMMA,10 polypropylene,11–14 HDPE,15, 16 polyaniline,17, 18 polystyrene,3, 19 Nylon,19–21 copolymers,22, 23 and thermoset resins 24–28. Graphene–polymer composites have also been reported 29, 30…”

Section: Introductionmentioning

confidence: 99%

Functionalized graphene sheet—Poly(vinylidene fluoride) conductive nanocomposites

Ansari

Giannelis

2009

J Polym Sci B Polym Phys

443

251

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PVDF nanocomposites based on functionalized graphene sheets, FGS prepared from graphite oxide, and exfoliated graphite, EG, were prepared by solution processing and compression molding. FGS remains well dispersed in the PVDF composites as evidenced by the lack of the characteristic graphite reflection in the composites. Although the a-phase of PVDF is seen in the EG-based composites, a mixture of a-and b-phases is present in the FGS analogs. SEM and TEM imaging show smooth fractured surfaces with oriented platelets of graphite stacks and obvious debonding from the matrix in the EG-PVDF composites. In contrast, the FGS-PVDF composites show a wrinkled topography of relatively thin graphene sheets bonded well to the matrix. Storage modulus of the composites was increased with FGS and EG concentration. A lower percolation threshold (2 wt %) was obtained for FGS-PVDF composites compared to EG-PVDF composites (above 5 wt %). Lastly, the FGS-PVDF composites show an unusual resistance/temperature behavior. The resistance decreases with temperature, indicating an NTC behavior, whereas EG-PVDF composites show a PTC behavior (e.g., the resistance increases with temperature). We attribute the NTC behavior of the FGS based composites to the higher aspect ratio of FGS which leads to contact resistance predominating over tunneling resistance. Recently Schnieep et al. reported functionalized graphene sheets (FGS) prepared by controlled thermal expansion of graphite oxide (GO). 31,32 Ramanathan et al. reported nanocomposites using FGS as filler and found that the T g of PMMA, PAN and PAA was improved greatly by the addition of FGS. 33 FGS silicone foam nanocomposites were studied by Verdejo et al. They

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Preparation and structure analysis of carbon/carbon composite made from phenolic resin impregnation into exfoliated graphite

Cited by 22 publications

References 9 publications

Poly(vinyl alcohol) Nanocomposites Filled with Poly(vinyl alcohol)-Grafted Graphene Oxide

Poly(vinyl alcohol) Nanocomposites Filled with Poly(vinyl alcohol)-Grafted Graphene Oxide

Morphology and the physical and thermal properties of thermoplastic polyurethane reinforced with thermally reduced graphene oxide

Functionalized graphene sheet—Poly(vinylidene fluoride) conductive nanocomposites

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