PRODUCTION OF HIGH-DENSITY ISOTROPIC CARBON MATERIAL
PURPOSE:To improve the yield of the subject material by mixing a petroleum- based heavy oil to a pitch raw material having specific softening point and fixed carbon content, heating the mixture at a prescribed temperature, forming the heat-treated mixture and subjecting the formed product successive...
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| creator | TAKEGAWA TOMEI MOROTOMI HIDETOSHI SHIODE TETSUO |
| description | PURPOSE:To improve the yield of the subject material by mixing a petroleum- based heavy oil to a pitch raw material having specific softening point and fixed carbon content, heating the mixture at a prescribed temperature, forming the heat-treated mixture and subjecting the formed product successively to carbonization treatment and graphitization treatment. CONSTITUTION:100 pts.wt. of a raw material pitch having a fixed carbon content of 50-60 (measured in conformity with JIS K2425) and a softening point of 80-150 deg.C is mixed with 50-200 pts.wt. of a petroleum-based heavy oil. The mixture is heated in N2 atmosphere at a prescribed temperature to get a hydroreformed pitch raw material. The reformed pitch raw material is crushed to fine powder, formed under 0.5-3T/cm , e.g. by cold hydrostatic forming, carbonized by heating to about 1000-1200 deg.C at a heating rate of 1-6 deg.C/min and finally graphitized by heating to about 2000-2800 deg.C at a heating rate of 30-60 deg.C/min to obtain the objective high-density isotropic carbon material. |
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CONSTITUTION:100 pts.wt. of a raw material pitch having a fixed carbon content of 50-60 (measured in conformity with JIS K2425) and a softening point of 80-150 deg.C is mixed with 50-200 pts.wt. of a petroleum-based heavy oil. The mixture is heated in N2 atmosphere at a prescribed temperature to get a hydroreformed pitch raw material. The reformed pitch raw material is crushed to fine powder, formed under 0.5-3T/cm , e.g. by cold hydrostatic forming, carbonized by heating to about 1000-1200 deg.C at a heating rate of 1-6 deg.C/min and finally graphitized by heating to about 2000-2800 deg.C at a heating rate of 30-60 deg.C/min to obtain the objective high-density isotropic carbon material.</description><language>eng</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMISTRY ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; COMPOUNDS THEREOF ; CONCRETE ; INORGANIC CHEMISTRY ; LIME, MAGNESIA ; METALLURGY ; NON-METALLIC ELEMENTS ; REFRACTORIES ; SLAG ; TREATMENT OF NATURAL STONE</subject><creationdate>1991</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19910723&DB=EPODOC&CC=JP&NR=H03170311A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76418</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19910723&DB=EPODOC&CC=JP&NR=H03170311A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAKEGAWA TOMEI</creatorcontrib><creatorcontrib>MOROTOMI HIDETOSHI</creatorcontrib><creatorcontrib>SHIODE TETSUO</creatorcontrib><title>PRODUCTION OF HIGH-DENSITY ISOTROPIC CARBON MATERIAL</title><description>PURPOSE:To improve the yield of the subject material by mixing a petroleum- based heavy oil to a pitch raw material having specific softening point and fixed carbon content, heating the mixture at a prescribed temperature, forming the heat-treated mixture and subjecting the formed product successively to carbonization treatment and graphitization treatment. CONSTITUTION:100 pts.wt. of a raw material pitch having a fixed carbon content of 50-60 (measured in conformity with JIS K2425) and a softening point of 80-150 deg.C is mixed with 50-200 pts.wt. of a petroleum-based heavy oil. The mixture is heated in N2 atmosphere at a prescribed temperature to get a hydroreformed pitch raw material. The reformed pitch raw material is crushed to fine powder, formed under 0.5-3T/cm , e.g. by cold hydrostatic forming, carbonized by heating to about 1000-1200 deg.C at a heating rate of 1-6 deg.C/min and finally graphitized by heating to about 2000-2800 deg.C at a heating rate of 30-60 deg.C/min to obtain the objective high-density isotropic carbon material.</description><subject>ARTIFICIAL STONE</subject><subject>CEMENTS</subject><subject>CERAMICS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</subject><subject>COMPOUNDS THEREOF</subject><subject>CONCRETE</subject><subject>INORGANIC CHEMISTRY</subject><subject>LIME, MAGNESIA</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><subject>REFRACTORIES</subject><subject>SLAG</subject><subject>TREATMENT OF NATURAL STONE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1991</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDAJCPJ3CXUO8fT3U_B3U_DwdPfQdXH1C_YMiVTwDPYPCfIP8HRWcHYMcgIq8HUMcQ3ydPThYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxXgEeBsaG5kBs6GhMjBoA3fonpg</recordid><startdate>19910723</startdate><enddate>19910723</enddate><creator>TAKEGAWA TOMEI</creator><creator>MOROTOMI HIDETOSHI</creator><creator>SHIODE TETSUO</creator><scope>EVB</scope></search><sort><creationdate>19910723</creationdate><title>PRODUCTION OF HIGH-DENSITY ISOTROPIC CARBON MATERIAL</title><author>TAKEGAWA TOMEI ; MOROTOMI HIDETOSHI ; SHIODE TETSUO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH03170311A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1991</creationdate><topic>ARTIFICIAL STONE</topic><topic>CEMENTS</topic><topic>CERAMICS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</topic><topic>COMPOUNDS THEREOF</topic><topic>CONCRETE</topic><topic>INORGANIC CHEMISTRY</topic><topic>LIME, MAGNESIA</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><topic>REFRACTORIES</topic><topic>SLAG</topic><topic>TREATMENT OF NATURAL STONE</topic><toplevel>online_resources</toplevel><creatorcontrib>TAKEGAWA TOMEI</creatorcontrib><creatorcontrib>MOROTOMI HIDETOSHI</creatorcontrib><creatorcontrib>SHIODE TETSUO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TAKEGAWA TOMEI</au><au>MOROTOMI HIDETOSHI</au><au>SHIODE TETSUO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PRODUCTION OF HIGH-DENSITY ISOTROPIC CARBON MATERIAL</title><date>1991-07-23</date><risdate>1991</risdate><abstract>PURPOSE:To improve the yield of the subject material by mixing a petroleum- based heavy oil to a pitch raw material having specific softening point and fixed carbon content, heating the mixture at a prescribed temperature, forming the heat-treated mixture and subjecting the formed product successively to carbonization treatment and graphitization treatment. CONSTITUTION:100 pts.wt. of a raw material pitch having a fixed carbon content of 50-60 (measured in conformity with JIS K2425) and a softening point of 80-150 deg.C is mixed with 50-200 pts.wt. of a petroleum-based heavy oil. The mixture is heated in N2 atmosphere at a prescribed temperature to get a hydroreformed pitch raw material. The reformed pitch raw material is crushed to fine powder, formed under 0.5-3T/cm , e.g. by cold hydrostatic forming, carbonized by heating to about 1000-1200 deg.C at a heating rate of 1-6 deg.C/min and finally graphitized by heating to about 2000-2800 deg.C at a heating rate of 30-60 deg.C/min to obtain the objective high-density isotropic carbon material.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS REFRACTORIES SLAG TREATMENT OF NATURAL STONE |
| title | PRODUCTION OF HIGH-DENSITY ISOTROPIC CARBON MATERIAL |
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