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The ablation property of the carbon carbon composite material is the key factor of SRM. The nozzle of the rocket or missile is under the situation of high speed air flow,and this kind of the material has the oxidization property,it will make the throat continuously in the ablation environment. The index of judging the material's erosion performance is mainly including: specific heat capacity,thermal conductivity,ablation rate,density etc. The good specific heat capacity can make the material absob much heat during the ablation process,and the low thermal conductivity can only make the high temperature gathered on the surface of the material,and can not transfer into the inside structure. The low density material can make the total weight lighter. The ablation property of…
Carbon carbon composite material is carbon fiber reinforced carbon composites, belong to the research and development in the field of high and new materials nomatter in China or abroad. In 1958,in the American Chance Vought Airlines Laboratory,the carbon carbon composite material was found by chance, during the testing of carbon fiber content in organic matrix composites,due to the mistake of the experimentation,the organic matrix Pyrolysised,and got the matrix carbon,and the new composite material has many good comprehensive performance,and after that,the C/C composite material was widely used for many high-tech fields. Carbon carbon composite material has the good high thermal resistance performance of carbon material, At the same time,it also has the good strength of the composite material,and it’s also easy…
Both of graphite foil and graphite sheets are flexible graphite products. graphite foil is usually in rolls and graphite sheets has the strengthed style. Graphite foil and graphite sheets are made from compressed exfoliated mineral graphite, pure graphite carbon and without fillers and binders. Most of graphite foil and graphite sheets in the market have a carbon content ranging from 95% -98%. Some brand of flexible graphite foil has a high purity of ≥99% carbon content. The higher carbon content,the better chemical resistance, better thermal conductivity and better sealability. Characteristics of graphite foil and graphite sheets: electrical conductive,thermal conductive; heat and fire resistant; compressible, conformable, low creep relaxation;Chemical resistant, compatible with most chemicals;reinforced structure to handle high pressure applications. Graphite…
