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Graphite rod surface by potential cycling. No interference effect of the most common ions such as sodium, potassium, chloride, nitrate, iodide, calcium, zinc, aluminum, sulfate and sorbitol was observed during electrochemical determination of fluoride. The graphite felt was oxidized at a positive electrode potential in sulfuric acid solution. The electrochemical performance of the treated graphite felt served as electrode for vanadium redox battery was investigated with FT-IR, On the other hand, the PAPBA/GR electrode showed not only good sensitivity and selectivity, but also relatively rapid response to changes of analyte concentrations in the range of 20s. The PAPBA-modified graphite rod (PAPBA/GR) electrode prepared in this way was used for potentiometric fluoride determination. The linear calibration range was from 5x10(-4) to…
Flexible graphite sheet is wildly used in all kinds of industry field. Flexible graphite roll uses: composite panels, cylinder head gaskets, packing, and so made manufacturing gaskets, sealing elements such as static gauge, mold, flange gasket. Attached to a variety of metal surfaces, improving sealing performance. Flexible graphite sheet / plate, after high purity natural flake graphite by chemical and heat treatment, made of molded rolling, without any binder. In the harsh working conditions still has excellent sealing performance, long life, low maintenance costs. Character and Appearance: black with metallic luster, high dispersion, never bonded graphite powder. Touch greasy feel can heat and good thermal stability, rich conductivity, thermal conductivity, chemical stability, acid and alkali plasticity and organic solvents, corrosion,…
1.carbon/carbon composites, refers to in carbon fiber (or graphite) and its fabric as the reinforced material, carbon (or graphite) as matrix, through processing and handling all the carbon composite material made of carbide. Carbon/carbon composite material is carbon fiber reinforced carbon composites, light quality, good erosion resistance, good thermal shock, high damage tolerance, high temperature and high strength, can be designed as a prominent feature, is used in aviation, spaceflight, circuit level and the production of solar energy silicon, high temperature furnace and other applications. 2. carbon - carbon composite material performance characteristics (1) physical properties: C/C composites at high temperature after heat treatment, the chemical composition of carbon element is higher than 99%, low density, with strong affinity, high…
