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- W2017671926 abstract "This study is concerned with the use of air-blowing to improve pitch properties as matrix precursor of carbon-carbon composites. Two commercial coal-tar pitches, an impregnating pitch and a binder pitch, and their air-blown products obtained at temperatures between 250 and 300 °C, were pyrolyzed in a horizontal tube furnace at 1000 °C. Cokes were characterized by light microscopy to monitor the influence of air-blowing on their optical texture. Density and porosity of cokes were determined by helium densimetry and mercury porosimetry, and their strength and reactivity by a microstrength test and thermogravimetric analysis, respectively. Results show that air-blowing of the impregnating pitch produces a decrease of the optical texture of coke, while in the case of the binder pitch there is an improvement of the microcrystalline structure. Moreover, air-blowing brings about a substantial increase in the density and strength of cokes, and a decrease in their porosity and reactivity." @default.
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- W2017671926 date "1995-01-01" @default.
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- W2017671926 title "Modification of coal-tar pitch by air-blowing II. Influence on coke structure and properties" @default.
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- W2017671926 doi "https://doi.org/10.1016/0008-6223(95)00062-i" @default.
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