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Carbon Fiber Composite is a new kind of structual material which developed obviously in recent ten years. Carbon fiber can be composited with resin, plastic, glass, ceramic, metal and other material, after which the material become high in strength, light in weight and good in rigidity. All in all development prospect of carbon fiber composite material is really wide. Carbon fiber composite material can reduce the weight of aircraft, missiles, spacecraft in a large extent, which is a very nice way to improve payload of those craft. For example, some foreign aircraft and missiles reduce 20% to 30% weight by replace its material by carbon fiber composite. When intercontinental missiles and satellites are flying at a high speed, high temperature…
Activated carbon fiber felt is a kind of high efficient adsorption material which is made of man-made fiber by low temperature carbonization, high temperature carbonization and activation. The product has abundant micropores and high specific surface area, low acid, alkali and ash content, good conductivity and chemical stability; the product has not only excellent adsorption performance, but also has good ability of reduction, adsorption and desorption speed, it can be used repeatedly. This product is mainly used for organic solvent recovery, air purification, sewage treatment, medical care, protective clothing, electronic and energy field, corrosion resistance and high temperature resistance environment. The material can be used for making air filter, activated carbon fiber felt can adsorb the O3 ,SO2 and NO2…
Graphite felt comprehensive performance is the best of the electrode used in battery.but it still need to do some activation treatment to improve the activity. The commonly used method:heat treatment,acid treatment, electrochemistry treatment etc. The heat treatment of graphite felt is to put it into the heating equipment, like muffle furnace,to make it oxidation around the surface. Some scholars have found that if put the un-modified graphite felt into the H2SO4 solution,the surface of the graphite felt is hydrophobic,and it need about 48h to be complete wetting.under 200℃ heating environment,and after that,the wetting time can be reduce to about 30h,and with the heating temperature increasing,the graphite felt is easier to be wetting. Under the heating temperature at 400℃ in the…
