Results 11 to 20 of about 69,476 (295)

FEW-LAYER GRAPHENE PARTICLES BASED ON THERMALLY EXPANDED COINTERCALATE OF GRAPHITE NITRATE WITH ACETIC AND FORMIC ACIDS

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2020
Dispersions of graphene nanoparticles were obtained by liquid phase exfoliation of thermally expanded graphite in ethanol as well as tert-butanol via sonication.
A.A. Davydova   +10 more
doaj   +1 more source

Sustainable mining of natural vein graphite via acid-extraction from waste attached to rock pieces of vein banks

open access: yesScientific Reports, 2023
A procedure based on acid extraction using a mixture of conc. sulfuric and nitric acids (8:1) to recover graphite attached to rock pieces of the vein contact zones of graphite mines, is developed as a sustainable mining practice.
Asiri D. T. Medagedara   +9 more
doaj   +1 more source

Expandable Graphite for Flame Retardant PA6 Applications [PDF]

open access: yesPolymers, 2021
A new expandable graphite (EG) type was studied as a flame retardant additive in Polyamide 6 (PA6). The fire behavior was characterized by a cone calorimeter using external heat fluxes of 35, 50 and 65 kW/m2, limiting the oxygen index (LOI) and UL-94 burning tests.
Florian Tomiak   +3 more
openaire   +3 more sources

Preparation and performance of industrial carbons derived cathodes for lithium/ fluorinated carbon primary batteries

open access: yesCailiao gongcheng, 2022
Four kinds of fluorinated carbon cathodes were fabricated with the industrial carbon materials (activated carbon, spherical graphite, expanded graphite and industrial graphene) to realize the universal applications of lithium/fluorinated carbon primary ...
HOU Xiaopeng   +6 more
doaj   +1 more source

Massive production of graphene oxide from expanded graphite [PDF]

open access: yes, 2013
In a deviation from the conventional Hummers method, a spontaneous expansion approach was introduced with expanded graphite as the precursors. The intercalating agent (H2SO4) was able to penetrate into the expanded graphite; this had further expanded the
Fugetsu, Bunshi, Sun, Ling
core   +2 more sources

Melt-Blended Multifunctional PEEK/Expanded Graphite Composites

open access: yesFrontiers in Materials, 2021
In this work, antistatic, high-performance composites of poly (ether ether ketone) (PEEK) and concentrations of 0.5–7 vol% expanded graphite (EG) were fabricated via twin-screw extrusion and injection moulding at mould temperatures of 200°C.
Mozaffar Mokhtari   +4 more
doaj   +1 more source

Utilization of multiple graphene layers in fuel cells. 1. An improved technique for the exfoliation of graphene-based nanosheets from graphite [PDF]

open access: yes, 2010
An improved, safer and mild method was proposed for the exfoliation of graphene like sheets from graphite to be used in fuel cells. The major aim in the proposed method is to reduce the number of layers in the graphite material and to produce large ...
Okyay, Firuze   +3 more
core   +1 more source

Expanded graphite/disodium hydrogen phosphate/sodium acetate trihydrate stabilized composite phase change material for heat storage

open access: yesJournal of Thermal Science and Technology, 2016
A stabilized composite phase change material for heat storage was synthesized by adding expanded graphite and disodium hydrogen phosphate to sodium acetate trihydrate with the method of vacuum adsorption.
Xu JI   +5 more
doaj   +1 more source

Novel strategy for low-temperature vacuum preparation of high-quality graphene

open access: yesJournal of Aeronautical Materials, 2020
Previously, the preparation of graphene often required one or more of strong acid oxidants, reduction temperatures above 1000 ℃,expensive metal catalysts, and accompanied by the problems of low efficiency, high and heavy pollution.
QI Xin   +5 more
doaj   +1 more source

Surface modifications of graphene-based polymer nanocomposites by different synthesis techniques [PDF]

open access: yes, 2012
With the appropriate surface treatments, graphene sheets can be separated from graphite material and the layer-to-layer distance can be extended. In the present work, graphene nanosheets (GNS) were separated from graphite by an improved, safer and mild ...
Alkan Gursel, Selmiye   +4 more
core   +1 more source

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