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序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
181 NEGATIVE ELECTRODE MATERIAL FOR LITHIUMION SECONDARY BATTERY JP19519196 1996-07-08 JPH1027612A 1998-01-27 EJIRI HIROSHI; NAKAJIMA HIDEYUKI; YAMAZAKI NORIMUNE
PROBLEM TO BE SOLVED: To provide a material which; exhibits graphite property at lower temperatures than conventionally normal, exhibits the same battery performance as that using graphite material when used as a negative electrode material for a lithium secondary battery, is less likely to cause excess voltage during discharge, and exhibits excellent stability against structural changes due to interlayer expansion and contraction during charge and discharge. SOLUTION: A negative electrode material for a lithium ion secondary battery uses a graphite property carbon material (C) which is obtained by heat treatment at 800-1400 deg.C under coexistence of a carbon property material (A) and cobalt metal, or their alloy (B), and which has a graphite interlayer distance of 350nm or less. The carbon property material (A) is mesophase pitch. The graphite property carbon material (C) is heat treated, crushed to 200μm or less in grain size, its metallic contents are removed by inorganic acid, and again heat treated at 400 to 1200 deg.C.
182 JP50496289 1988-10-18 JP2678946B2 1997-11-19
183 JP6790488 1988-03-22 JP2582848B2 1997-02-19 TAGAWA TOORU; KATAYAMA HIROO
184 JP13403288 1988-05-30 JPH086210B2 1996-01-24
185 JP16666685 1985-07-30 JPH0651945B2 1994-07-06
186 JP945484 1984-01-24 JPH042689B2 1992-01-20
187 PRODUCTION OF CARBON FIBER AND GRAPHITE FIBER JP32050589 1989-12-12 JPH03185120A 1991-08-13 UNO HIROBUMI; YAMAMOTO NOBUYUKI
PURPOSE:To obtain the title fiber with both high mechanical strength and modulus, few in fluffs, excellent in mechanical properties and processability by putting carbonized or graphitized fiber to a treatment to improve its coefficient of friction followed by feeding the resultant fiber to a driving roll. CONSTITUTION:When a precursor fiber is made resistant to flame and is to carbonized continuously while applying tension with a driving rolls situated before and after an oven and further, if needed, graphitized, the fiber passed through a carbonizing oven and/or graphitizing oven is subjected to a treatment to enhance its coefficient of friction to >=0.10 and fed to the driving rolls to apply tension thereon, thus obtaining the objective fiber. For the treatment to enhance the coefficient of friction, it is suggested, for example, that the carbon fiber be treated under heating in an oxidative atmosphere.
188 JP6878786 1986-03-28 JPH0321671B2 1991-03-25 KIKUCHI AKITAKA; HOSOI KEIZO
189 HIGH-STRENGTH AND HIGH ELASTIC MODULUS CARBON FIBER JP13403288 1988-05-30 JPH01306619A 1989-12-11 MATSUHISA YOJI; TAKADA NORIAKI; HIRAMATSU TORU
PURPOSE:To obtain the subject high-performance fiber, having a small density and respectively specified values or above of strength and elastic modulus of the resin-impregnated strand and useful as a primary structural material, etc., for a aircraft because of excellent strength-to-weight ratio and specific modulus. CONSTITUTION:An objective fiber with <=1.75g/cm<3> density, >=650kg/mm<2> strength of the resin-impregnated strand and >=35t/mm<2> elastic modulus of the resin impregnations. The above mentioned fiber is obtained, preferably by carrying out dry wet spinning of an acrylic polymer containing an acrylonitrile unit in an amount of >=95mol%, heating the resultant fiber in an oxidative atmosphere till reaching >=1.35g/cm<3> density for flame proof treatment, carrying out carbonization treatment of the resultant inflammable fiber in an inert atmosphere at 1,700-2,000 deg.C, oxidizing the carbon fiber in a nitrate ion-containing aqueous electrolyte solution at 40 deg.C using the carbon fiber as an anode and then treating the oxidized fiber in an inert atmosphere of 650-850 deg.C.
190 METHOD FOR SURFACE-TREATING CARBON FIBER JP10911688 1988-05-06 JPH01282385A 1989-11-14 YAMAZAKI HIROSHI; ITO NORIAKI
PURPOSE:To form a carbonized carbon film having excellent adhesion with carbon fiber by applying electric current to an electrolyte solution containing specific organic compounds and having conductivity using carbon fiber as an electrode so as to form polymerization layer of the above-mentioned organic compounds and then heat-treating the polymerization layer. CONSTITUTION:Electric current is applied to an electrolyte solution containing one or plural mixture of organic compounds, e.g., alcohols such as furfuryl alcohol, aromatic hydrocarbon such as benzene or toluene, phenol derivative, etc., and having conductivity using a carbon fiber as an electrode and the above- mentioned organic compound is polymerized and bonded to the surface of carbon fiber to form a coating layer and the carbon fiber is taken out from the solution and heated at >=100 deg.C to complete polymerization. Then the resultant polymer is burned at >=1000 deg.C to graphitize the polymer. In a composite material obtained from the surface-modified carbon fiber, tensile strength and fracture toughness is remarkably improved to provide a high-quality product.
191 CARBON FIBER EXCELLENT IN HIGH-ORDER PROCESSABILITY JP10061988 1988-04-22 JPH01272867A 1989-10-31 SHIRATORI AKIRA; TAKADA NORIAKI; HIRAMATSU TORU
PURPOSE:To obtain a carbon fiber for excellent composite materials with prevented fretting fluff or yarn breakage from occurring in high-order processing, such as prepreg formation or drum winding, by applying a specific sizing agent to the carbon fiber. CONSTITUTION:At least one kind of compound selected from compounds expressed by formulas I, II and III (R1 is H, OR, formula IV or V: R2 is H or OH; m and n are 1-49 and m+n is 10-50) as a sizing agent in an amount of 0.1-5.0wt.%, preferably 0.3-3.0wt.% is applied to a carbon fiber to afford the aimed carbon fiber having a low friction coefficient with metal and excellent coherency. Effects on maintenance of compatibility and reduction in friction coefficient are more increased by copolymerizing polyethylene oxide or/and polypropylene oxide components for imparting smoothness to the fiber and reducing the friction coefficient with bisphenol A component for improving compatibility with a matrix resin and using the resultant copolymer than by mixing simple components and using the obtained mixture.
192 COMPOUND FIBER OF INTER-GRAPHITE LAYER AND MANUFACTURE THEREOF JP7477388 1988-03-30 JPH01248406A 1989-10-04 FUKUDA SEIJI; TSUKAMOTO JUN
PURPOSE:To make it possible to obtain compound fiber of an inter-graphite layer that has a higher transition temperature to super conductivity and no break and tear on the fiber surface by preparing compound fiber of inter- graphite layer having a specific layer and making its transition temperature to super conductivity at 1.3 to 1.5K in absolute temperature. CONSTITUTION:This is compound fiber of an inter-layer having a layer composed of mercuric potassium-graphite inter-layer compound applied to the external layer of a core strand, and having transition temperature to super conductivity at 1.3 to 1.5K in absolute temperature. The core strand plays a role as a substrate material for the external layer and any material may be used, but carbon fiber is especially desirable for the core strand. Carbon fiber may be composed of a monofilament or multifilaments. It should be noted that the inter-mercuric potassium-graphite compound is a compound generally expressed as C4nKHg (n is a natural number) in composition formula. With this procedure it is possible to obtain a fiber composed of an inter-graphite-layer compound with high electric conductivity, prominent super conductivity in having the transition point in a range from 1.3 to 1.5K, and stable shape.
193 JP16863488 1988-07-06 JPH0126611B2 1989-05-24 JEEMUZU TONAA HOORU JUNIAA; UINFURETSUDO ERUSON UERUDEI
194 OXIDATION TREATMENT OF CARBONACEOUS FIBER JP27736387 1987-11-04 JPH01124679A 1989-05-17 OBARA KAZUYUKI; SUGIMORI KIMIHIDE
PURPOSE: To effect the oxidative treatment of carbonaceous fiber that can increase its mechanical properties as a composite material of rubber, resin and the like and has excellent adhesion and wetting properties by treating carbon fiber with heat in a specific temperature range in a mixed gas atmosphere containing nitrogen, oxygen, hydrogen chloride in a specific proportion. CONSTITUTION: Carbon fibers that contain 0.01-2 wt.% of transition metal and has a filament diameter of 0.01-4 μm is subjected to an oxidative heat treatment in a mixed gas atmosphere comprising 0.3-10 vol.% of oxygen, 0.3-20 vol.% of hydrogen chloride and nitrogen at 350-1,100 deg.C to increase the adhesion and wettability of the carbon fiber whereby the mechanical properties of carbon fiber composites with rubber or resins are improved.
195 PRODUCTION OF CARBON YARN AND GRAPHITE YARN JP26685087 1987-10-21 JPH01111018A 1989-04-27 KOMINE KIKUJI; HINO TAKASHI; KURODA HIROYUKI
PURPOSE:To obtain the above yarn having extremely high strength and modulus of elasticity, improved properties and good appearance, by providing carbonaceous pitch yarn prepared by melt spinning with a specific fiber collecting agent, infusibilizing, carbonizing and graphitizing. CONSTITUTION:Carbonaceous pitch yarn obtained by melt spinning is approximately collected by an air sucker, introduced to an oiling roller, provided with a fiber collecting agent comprising (A) an alkylphenylpolysiloxane or dimethylpolysiloxane and (B) a solid lubricant, preferably an inorganic solid lubricant or the component A, the component B and (C) a surface active agent having <=600 deg.C boiling point as essential components and bundled. Then the bundled pitch yarn is infusibilized, further carbonized under an inert gas atmosphere and successively graphitized to give the aimed yarn.
196 PRODUCTION OF BROMINE TREATED GRAPHITE FIBER JP17515888 1988-07-15 JPH01104880A 1989-04-21 HASHIMOTO SETSUJIROU; YAGI KIYOSHI; KANDA MASAHIRO
PURPOSE: To produce fluorine-treated graphite fiber having excellent electroconductivity and excellent in stability in air and thermal stability by heat-treating specific vapor growth carbon fiber, followed by treating the resultant graphite fiber having a specific crystal structure with fluorine. CONSTITUTION: This fluorine-treated graphite fiber is produced by heat-treating vapor growth carbon fiber, which is formed through the pyrolysis of a mixture gas of a hydrocarbon compound such as benzene with hydrogen gas in the presence of ultrafine particles of a metallic catalyst, (e.g. metal iron particles) floating in a high-temperature air at the temperature near to 1,100 deg.C, at 2,800-3,000 deg.C to form graphite fiber having a crystal structure where carbon hexagonal reticulated plane is parallel to the fiber axis and is oriented in an annual ring-like state, followed by making the graphite fiber contact with fluorine at <=60 deg.C to form fluorine-treated graphite fiber comprising an intercalation compound of graphite fiber with fluorine, in which the repeated period length in the direction of the C-axis of a crystal ranges from 10 Å to 40 Å. The fluorine-treated graphite fiber has 5.5 times the value of the electroconductivity of untreated graphite fiber and is excellent in thermal stability.
197 JP50034787 1987-12-01 JPH01500133A 1989-01-19
198 JP17516284 1984-08-24 JPS6360132B2 1988-11-22
199 METHOD AND APPARATUS FOR PRODUCING METAL COATED STAPLE FIBER JP29918786 1986-12-15 JPS63152462A 1988-06-24 NAKA HIDEO
200 SURFACE MODIFIED CARBON FIBER AND ITS PRODUCTION JP22201986 1986-09-22 JPS6385167A 1988-04-15 HIRAMATSU TORU; TAKAI TOSHIAKI; HASUMI SHIGERU