نتایج جستجو برای: carbon fibres
تعداد نتایج: 296673 فیلتر نتایج به سال:
Carbon fibres can be used as structural electrodes because they have a high tensile properties-to-weight ratio and a graphitic structure which enables lithium-ion intercalation. Carbon fibre specimens were used as electrodes in laboratory cells. It was found that the fibre undergoes an ultimate tensile strength drop and an axial expansion which depend on the measured capacity. The results sugge...
Carbon fibre electrodes can enable a solid-state battery to carry mechanical load as normal construction materials. The multifunctionality is promising for most lightweight applications. Like all electrode materials, both volume and elastic moduli of the carbon change during cycling. Such changes jeopardize integrity battery. Due challenging corrosion problem lithiated component in air, effect ...
This paper reports on the development of novel Ti-doped 3D carbon fibre composites (CFCs) and their performance when exposed to transient thermal loads (disruptions) in the electron beam facility JUDITH at different conditions. Depending on the applied load, the CFCs showed three steps of erosion: 1) breaking of PAN fibres with pull out from the surface; 2) cracking and ablation of pitch fibres...
Microelectrode sensors for phenol and catechol are described, based on the sequential immobilization of polystyrene sulphonate, polyallylamine, tyrosinase and polyallylamine again, onto micrometer scale latex spheres, followed by the adsorption of the spheres onto electrochemically pretreated carbon fibres. The steady state responses of the fibres are analyzed in terms of a cylindrical diffusio...
Polymer used in satellite manufacturing are exposed to surface charging phenomenon due electronic irradiations. This can induce electrostatic discharges (ESD) which lead failures. In order limit this phenomenon, we propose develop PEEK composite reinforced with Short Carbon Fibres (SCF). We studied the behaviour of these composites pristine state and after irradiations compared PEEK. state, fib...
Bubble nucleation is a phenomenon observed in many different physical situations from decompression sickness (DCS) to champagne research. It is of vital importance to the formation of a creamy head that is distinctive to stout beers. As stouts contain a lower quantity of dissolved carbon dioxide than other beers, nitrogen is also dissolved in the beer. This is necessary to produce the smaller b...
An organogelator with two distinct π-functional units is able to incorporate carbon nanotubes into its mesh of fibres in the gel state. The morphology of the material derived from this nanocomposite after evaporation of the solvent is a complex mesh of fibres which is clearly different from the pure gelator. This feature indicates a role of the nanotubes in assisting the formation of a fibre st...
Carbon nanofibres of the fishbone and parallel type were surface-oxidised by several methods. The untreated and oxidised fibres were studied with infrared spectroscopy, thermogravimetric analysis and XPS. Oxidation in a mixture of concentrated nitric and sulfuric acid turned out to be the most effective method for creating oxygen-containing surface groups. This treatment results not only in the...
Composites with the gradient of Young's modulus constitute a new group of biomimetic materials which affect the proper distribution of stresses between the implant and the bone. The aim of this article was to examine the mechanical properties of gradient materials based on carbon fibre-polysulfone composite, and to compare them to the properties of a natural intervertebral disc. Gradient proper...
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