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1. 发明专利

JPH0963584A CARBON MATERIAL FOR LITHIUM SECONDARY BATTERY AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0963584A
公开(公告)日：1997-03-07
申请号：JP23207195
申请日：1995-08-18
申请人： PETOCA KK
发明人： TAMAKI TOSHIO , NISHIMURA KASUKE
IPC分类号： C01B31/04 , D01F9/145 , H01M4/587 , H01M10/05 , H01M4/58 , H01M4/02 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To increase the charging/discharging capacity and cycle characteristics of a lithium secondary battery by using a carbon material representing the specified crystal structure in X-ray diffraction measurement, obtained by graphitizing treatment in the existence of a boron compound in a negative electrode. SOLUTION: The spacing between graphite layers measured by X-ray diffraction of a carbon material whose graphitizing treatment is performed in the existence of a boron compound is 0.338nm or less, and the size of a crystallite in the direction of the (c) axis is 35nm or more and that in the direction of the (a) axis is 50nm or more, and the ratio of diffraction peak of (101) plane to the diffraction peak of (100) plane P101 /P100 is 1.0 or more. Preferably, carbon fibers prepared by using meso-phase pitch as a raw material are milled, then graphitized. Preferably, the pitch raw material is spun and is made nonfusible, and if necessary slightly carbonized at 1500 deg.C or lower, then milled, and graphitized at 2200 deg.C or higher after a boron compound is added. Thereby, the highly carbonized carbon material can be obtained.

2. 发明专利

JPH0790725A MILLED MESO-PHASE PITCH CARBON FIBER AND PRODUCTION THEREOF 失效
公开(公告)号：JPH0790725A
公开(公告)日：1995-04-04
申请号：JP25359593
申请日：1993-09-17
申请人： PETOCA KK
发明人： NISHIMURA KASUKE , EJIRI HIROSHI
IPC分类号： D01F9/14 , D01F9/145 , D01F9/32
摘要： PURPOSE:To provide a milled carbon fiber having suppressed aging deterioration caused by reaction, etc., in spite of the increase of contact area and the develop ment of graphite layer face and enabling the adjustment of the graphitization degree by the selection of the temperature of high-temperature heat-treatment and, accordingly, suitable as a material in the field to utilize the intercalation into the graphite layer and the crystallinity of graphite. CONSTITUTION:This milled meso-phase pitch carbon fiber has a BET specific surface area of >=0.1m /g and /g and the average of the smaller crossing angle between the fiber cross-section and the fiber axis of >=75 deg.. The milled carbon fiber can be produced by melt-spinning meso-phase pitch, infusibilizing the spun fiber, subjecting to the primary heat-treatment at 250-1500 deg.C in an inert gas in the form of infusibilized fiber, milling the product and subjecting to high-temperature heat-treatment in an inert gas at >=1500 deg.C.

3. 发明专利

JPH06272118A PITCH-BASED ACTIVE CARBON FIBER AND ITS PRODUCTION 失效
公开(公告)号：JPH06272118A
公开(公告)日：1994-09-27
申请号：JP8030693
申请日：1993-03-16
申请人： PETOCA KK
发明人： TAMAKI TOSHIO , NAKAJIMA HIDEYUKI , NISHIMURA KASUKE , EJIRI HIROSHI
IPC分类号： C01B31/08 , C10C3/02 , C10C3/04 , C10C3/10 , D01F9/14 , D01F9/145
摘要： PURPOSE:To obtain active carbon fiber having a large specific surface area so as to be comparable to that of carbon fiber obtained from optically isotropic pitch and high fiber strength. CONSTITUTION:This optically isotropic pitch-based active carbon fiber is produced by melt mixing (A) 100 pts.wt. optically isotropic pitch, prepared by heat-treating pitch while blowing an oxygen-containing gas thereinto and having 230-300 deg.C softening point with (B) 10-50 pts.wt. optically isotropic pitch, obtained by polymerizing naphthalene in the presence of a Lewis acid catalyst and having 200-270 deg.C softening point, then spinning the resultant mixture, infusibilizing the spun fiber and subjecting the infusibilized fiber to activating treatment The resultant active carbon fiber contains the optically anisotropic part and has a double structure in which the surface layer part of the obtained active carbon fiber manifests the optical isotropy and the interior thereof manifests the optical anisotropy.

4. 发明专利

JPH06248520A PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPH06248520A
公开(公告)日：1994-09-06
申请号：JP5797793
申请日：1993-02-24
申请人： PETOCA KK
发明人： YAMADA TETSUO , HOSOTSUBO TOMIMORI
IPC分类号： D01F9/14 , D01F9/145
摘要： PURPOSE:To obtain uniform carbon fibers high in both mechanical strength and modulus by infusibilizing mesophase pitch fibers under specific conditions followed by carbonization. CONSTITUTION:The carbon fibers can be obtained by infusibilizing mesophase pitch fibers at

5. 发明专利

JPH06166552A CARBON FIBER FOR REINFORCING CEMENT AND CEMENT COMPOSITE MATERIAL 失效
公开(公告)号：JPH06166552A
公开(公告)日：1994-06-14
申请号：JP31830292
申请日：1992-11-27
申请人： PETOCA KK , TAKENAKA KOMUTEN CO , TOKAI CONCRETE KOGYO KK
发明人： TAKANO KATSUMI , KATSUTA YASUSHI , ONO SADATOSHI , KAKIZAWA TADAHIRO , IDA JUNICHI , IWATA MASAKI
IPC分类号： C04B14/38 , D06M13/02 , D06M13/144 , D06M13/224 , D06M101/00 , D06M101/40
摘要： PURPOSE:To provide cement-reinforcing carbon fibers excellent in adhesivity to the cement, good in the process-passing property for direct spray guns, good in the carbon fiber-binding property and suitable for direct spray techniques, and to provide the cement composite material high in its flexural strength with the same. CONSTITUTION:The surfaces of carbon fibers are coated with an oleic acid aliphatic monohydric alcohol ester or an oleyl alcohol monobasic acid ester as a sizing agent to provide the carbon fibers for reinforcing the cement. The carbon fibers are cut into a fiber length of 10-50mm, and added to a cement matrix in a volumetric mixing rate of 1-5% to form the cement composite material having a flexural strength of >=300kgf/cm .

6. 发明专利

JPH06815A WOVEN FABRIC AND PRERREG FOR TAPE WRAPPING MOLDING 失效
公开(公告)号：JPH06815A
公开(公告)日：1994-01-11
申请号：JP15965392
申请日：1992-06-18
申请人： NISSAN MOTOR , PETOCA KK
发明人： OKAMOTO HISAO , TAKAMATSU AKIO
IPC分类号： B29B11/16 , B29B15/08 , B29C70/10 , B29K101/10 , B29K105/08 , C08J5/24 , D03D1/00 , D03D15/12 , B29C67/14
摘要： PURPOSE:To improve workability at the time of tape wrapping molding by possessing appropriate elasticity and without deteriorating erosion resistance of a product, by a method wherein spun yarn comprised of a reinforcing fiber material is used for the warp of a lengthwise direction of tapelike woven fabric and continuous yarn comprised of the reinforcing biber material is used for the weft of a widthwise direction. CONSTITUTION:Woven fabric for tape wrapping molding is tapelike woven fabric to be used for the tape wrapping molding of a fiber-reinforced composite material. Then the woven fabric is constituted so that spun yarn comprised of a reinforcing fiber material is used for the warp running along a lengthwise direction of the tapelike woven fabric and continuous yarn comprised similarly of the reinforcing fiber material is used for the weft of a widthwire direction. With this construction, since elasticity of a lengthwise direction of the tapelike woven fabric contributing greatly to an improvement in winding-up properties at the time of the tape wrapping molding is secored and the continuous yarn superior in erosion resistace is used as the weft affecting winding-up properties little though the same is wanting in the elasticity, the same turns a matter having the favorable winding-up moldability and erosion resistance at the same time.

7. 发明专利

JPH062723A MANUFACTURE OF BRAKE MATERIAL MADE OF C/C COMPOSITE 失效
公开(公告)号：JPH062723A
公开(公告)日：1994-01-11
申请号：JP15964192
申请日：1992-06-18
申请人： NISSAN MOTOR , PETOCA KK
发明人： YAMAUCHI HIROSHI , OKAMOTO HISAO , TAKAHATA MINORU , NAGATA YOSHIKAZU
IPC分类号： C04B35/83 , C04B35/52 , C04B35/80 , F16D69/02
摘要： PURPOSE:To provide the manufacturing method of brake material made of C/C composite which can increase friction coefficient and reduce the amount of wear greatly. CONSTITUTION:The brake material made of C/C composite consists of pitch carbon fiber which is produced at the burning temperature of 1400 deg.C or less. Pitch is impregnated in unwoven fabric having the fiber volume rate of 30 to 65% as a matrix carbon precursor. The final heat treatment is done in the range of temperature of 1800 to 2600 deg.C.

8. 发明专利

JPH05230720A PRODUCTION OF PITCH IN HIGH CARBONIZATION YIELD 失效
公开(公告)号：JPH05230720A
公开(公告)日：1993-09-07
申请号：JP20176692
申请日：1992-07-07
申请人： PETROLEUM ENERGY CENTER FOUND , PETOCA KK
发明人： MORIKAWA SHIGERU , HOSOTSUBO TOMIMORI
IPC分类号： C01B31/02 , C08L95/00 , C10C3/02 , C10C3/04 , D01F9/14 , D01F9/145
摘要： PURPOSE:To provide a method for producing a pitch useful as a matrix for various carbon materials in an improved carbonization yield by preliminarily shaping a mesophase pitch into a fiber-like product and partially oxidation- polymerizing the fiber-like product. CONSTITUTION:A method for producing a pitch in an improved yield is characterized by melt-spinning a mesophase pitch into a fibrous product by a conventional method and oxidation-polymerizing the fibrous product in the presence of an acidic catalyst and a cross-linking agent in a solvent in a temperature range in which the produced pitch can keep its thermal flowability. The mesophase pitch is preferably shaped into the fibrous pitch having a diameter of

9. 发明专利

JPH04305047A CARBON FIBER-BASED BINDERLESS FORMING HEAT INSULATING MATERIAL AND PRODUCTION THEREOF 失效
公开(公告)号：JPH04305047A
公开(公告)日：1992-10-28
申请号：JP2673091
申请日：1991-01-29
申请人： PETOCA KK
发明人： SEKIDO MASAO , MURAKAMI KIKUO
IPC分类号： C01B31/02 , C04B30/02 , C04B35/52 , D01D5/08 , D01F9/14 , D01F9/145
摘要： PURPOSE:To obtain carbon-fiber-based forming heat insulating material excellent in the heat insulation characteristics in a high temp. region. CONSTITUTION:Carbon fiber-based forming heat insulating material has such a feature that bulk density is 0.01-0.5g/cm and thermal conductivity in the direction of thickness of the forming heat insulating material is 1.0kcal/m.hr deg.C or below at 2200 deg.C and a forming shape is substantially held by self-bonding of carbon fiber. This carbon fiber-based forming heat insulating material is produced by collecting precursor fiber in a sheet shape in a stage directly joined to the spinning stage of the precursor fiber and making it infusible in the conditions wherein bonding is caused between fibers at a time of carbonization and thereafter laminating the necessary number of sheets and carbonizing them.

10. 发明专利

JPH10162829A NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH10162829A
公开(公告)日：1998-06-19
申请号：JP33141096
申请日：1996-11-28
申请人： PETOCA KK
发明人： TAMAKI TOSHIO , MAEDA TAKASHI
IPC分类号： C01B31/04 , D01F9/14 , H01M4/02 , H01M4/36 , H01M4/587 , H01M10/05 , H01M4/58 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery to stably supply high discharging capacity by forming a boron nitride uncontained graphite material by performing reheating treatment at a high temperature on a graphite material containing a boron nitride on which graphitization processing is performed, and using it as a negative electrode. SOLUTION: A boron compound is made to exist, and a graphitization processing is performed in a nitrogen atmosphere, and a graphite material on which an inter-graphite layer distance by X-ray diffraction is not more than 0.338nm and the size of a crystallite is not less than 35nm in the (c) axis direction and is not less than 50nm in the (a) axis direction and the ratio of a diffraction peak is not less than 1.0, is obtained. Heat treatment of a temperature not less than 2000 deg.C is also performed on this boron nitride containing graphite under prescribed reduced pressure or in a halogen gas containing atmosphere. Therefore, a baron nitride regarded as hindering the improvement of battery performance is removed, and when it is graphitized to a high degree and is used as a negative electrode, high discharge capacity is stably obtained, and performance of a lithium ion secondary battery can be improved.

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