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Tiled arrangement of carbon felt and carbon fiber unidirectional arrangement of absorbing microwave absorbing properties of the composites, polyacrylonitrile based carbon fiber unidirectional arrangement is closely related to the suction arrangement spacing and wave properties of fiber and fiber content. Suction arrangement of carbon felt greatly influence the flat wave properties with carbon fiber content. At present, the negative effect of electromagnetic radiation has affected all aspects of human life. It is an effective way to reduce or eliminate electromagnetic wave pollution by absorbing materials. Graphite felt is one of the most commonly used structural absorbing materials, and has been widely used. By changing the cross section of the carbon fiber in the graphite felt, the surface modification of the…
The bipolar plate used therein are required to achieve higher electrical conductivity due to the requirements for redox flow batteries have become more and more stringent in recent years.and thus A bipolar plate composed of an electrically conductive composite achieves a higher electrical conductivity by increasing the conductive filler content in the material. Graphite was used as one of the main bipolar plate material in redox flow batteries due to its high electrical conductivity ,low weight and good chemical stability in the past.Graphite blocks were produced by sintering process and plates were machined to desired sizes.The main limitation of this method was the porosity of produced graphite plates. At present, our company provides a bipolar plate for a redox flow…
The graphite crucibles were prepared with flake graphite, silicon carbide, silica and kaolin. The influence factors on the properties of samples were investigated. The results show that, with the increase of the silicon carbide content, the volume density of samples increases, the porosity decreases, the weight loss rate of the sample reduces and the antioxidant activity improves. Elevating the oxidation temperature and prolonging the oxidation time increase the weight loss rate of the sample, decrease the antioxidant activity. The microstructure analysis show that the compactness of the samples rises when the silicon carbide content and the sintering temperature increase. The numerical simulation results show that the electromagnetic force and the flow distribution induced by the melt surface are significantly different…
