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AssigneeOsaka Gas Co., Ltd.
InventorsYoshiteru Nakagawa, Takayuki Azuma, Hideki Tamamura, Tadashi Murakami, Norio Murakami, Yasuo Minamitani, Noboru Mimura
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A sintered product based on mesocarbon microbeads is prepared by pressure-molding mesocarbon microbeads (MCMB) having an MSP (maximum solubility percent) value of 30 to 38% by volume whereby a body is formed, and sintering the body, wherein MSP represents the percentage volume reduction (volume %) determined by heating a given amount of an MCMB to 350.degree. C. under a pressure load of 10 kgf/cm.sup.2. The quality of a molded MCMB sintered product can be controlled by determining the percentage volume reduction (MSP) of an MCMB by heating it under a given pressure load in a predetermined space using the MSP value so found as an indicator.
A method of producing a high-strength shaped and sintered MCMB product comprising selecting substantially only mesocarbon microbeads having a maximum solubility percent (MSP) value of 30 to 38% by volume, and (2) pressure-molding and sintering said mesocarbon microbeads, wherein MSP represents the percentage volume reduction (volume %) determined by heating a given amount of MCMB to 350.degree. C. under a pressure load of 10 kgf/cm.sup.2.
A method for controlling the quality of shaped and sintered mesocarbon microbeads (MCMB) products which comprises (1) heating mesocarbon microbeads at 350.degree. C. under a pressure of 10 kgf/cm.sup.2 and (2) selecting for shaping and sintering substantially only those mesocarbon microbeads having a maximum solubility percent (MSP) value of 30-38% by volume, wherein MSP represents the percentage volume reduction (volume percent) determined by heating a given amount of (MCMB) to 350.degree. C. under a pressure of 10 kgf / cm.sup.2.
Dependencies are inferred from the claim text.