Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and...
Patent
1992-04-22
1994-12-13
Lieberman, Paul
Mineral oils: processes and products
Asphalts, tars, pitches and resins; making, treating and...
208 40, 208 44, 106274, C10C 300, C08L 9500
Patent
active
053727029
ABSTRACT:
The improved composition for use in the production of composite carbon materials comprises a mesophase pitch containing at least 80% of an optical anisotropic phase and having a softening point of no higher than 250.degree. C., and sulfur present in an amount of 6-35 parts by weight per 100 parts by weight of said mesophase pitch. Said composition may be heated together with an aggregate and subsequently shaped to yield a composite carbon material. The improved process for producing a composite carbon material comprises impregnating an aggregate with said composition as it is melted, shaping the mixture in a temperature range of 150.degree.-350.degree. C, and then carbonizing the shaped part.
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Chemical Abstracts, vol. 86, 13 Jun. 1977, Columbus, Ohio, US; abstract no. 173502u, Rhee, B. `A simplified process for carbon-carbon composites production`. p. 173505.
Thermochimica Acta, vol. 62, No. 2-3, 1983, pp. 237-248 Charit, J. and AL. `Thermogravimetric characterization of the suitability of various pitches as matrices for carbon-carbon composites` pp. 246-247, "The effect of the addition of sulfur and conclusions", month not available.
Kojima Takashi
Sakamoto Hitoshi
Hailey P. C.
Lieberman Paul
Mitsubishi Gas Chemical Company Inc.
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