GAS DIFFUSION ELECTRODE MEDIUM FOR FUEL CELL

    公开(公告)号:CA2868720C

    公开(公告)日:2020-07-07

    申请号:CA2868720

    申请日:2013-04-25

    Abstract: Provided is a gas diffusion electrode substrate that is for a fuel cell, has a low in-plane gas permeability and favorable water drainage characteristics in addition to high conductivity, and is able to exhibit high electricity generation performance across a wide temperature range from low temperatures to high temperatures. The gas diffusion electrode substrate for a fuel cell is characterized by a microporous section being disposed at least at one surface of an electrode substrate, and the microporous section containing flake graphite having an aspect ratio in the range of 50-5000.

    GAS DIFFUSION ELECTRODE BASE, LAMINATE AND FUEL CELL

    公开(公告)号:CA3015334A1

    公开(公告)日:2017-10-05

    申请号:CA3015334

    申请日:2017-03-27

    Abstract: [Problem] To provide a gas diffusion electrode base which achieves a good balance between short-circuit resistance and flooding resistance, while having high durability and good power generation performance. [Solution] A gas diffusion electrode base which comprises a microporous layer 1 on one surface of a conductive porous base, and which is configured such that: the microporous layer 1 has a dense part A and a dense part B; the dense part A is a region that contains a fluororesin and a carbonaceous powder having a primary particle diameter of from 20 nm to 39 nm (inclusive); the dense part A has a thickness of from 30% to 100% (inclusive) when the thickness of the microporous layer 1 is taken as 100%, and has a width of from 10 µm to 200 µm (inclusive); and the dense part B is a region that contains a fluororesin and a carbonaceous powder having a primary particle diameter of from 40 nm to 70 nm (inclusive).

    CARBON FIBER REINFORCED THERMOPLASTIC RESIN COMPOSITION MOLDING MATERIAL PREPREG AND METHODS FOR PRODUCING SAME

    公开(公告)号:IN3279CHN2014A

    公开(公告)日:2015-07-03

    申请号:IN3279CHN2014

    申请日:2014-04-30

    Abstract: Provided are a carbon fiber reinforced thermoplastic resin composition a molding material a prepreg and methods for producing same which offer excellent interfacial adhesion between carbon fiber and thermoplastic resin and offer excellent mechanical properties. The carbon fiber reinforced thermoplastic resin composition comprising the following components (A) and (B) carbon fiber and a thermoplastic resin. Component (A): (A1) a bifunctional or higher epoxy compound and/or (A2) an epoxy compound which has a monofunctional or higher epoxy group and has one or more functional group(s) selected from among a hydroxyl group an amide group an imide group a urethane group a urea group a sulfonyl group and a sulfo group. Component (B): 0.1 to 25 mass parts of at least one type of reaction accelerant selected from the group consisting of (B1) a specific tertiary amine compound (salt) [a] (B2) a specific quaternary ammonium salt [b] and (B3) a phosphine compound and/or quaternary ammonium salt [c] with respect to 100 mass parts of the component (A).

    GAS DIFFUSION ELECTRODE SUBSTRATE FOR FUEL CELL

    公开(公告)号:CA2868720A1

    公开(公告)日:2013-11-21

    申请号:CA2868720

    申请日:2013-04-25

    Abstract: Provided is a gas diffusion electrode substrate that is for a fuel cell, has a low in-plane gas permeability and favorable water drainage characteristics in addition to high conductivity, and is able to exhibit high electricity generation performance across a wide temperature range from low temperatures to high temperatures. The gas diffusion electrode substrate for a fuel cell is characterized by a microporous section being disposed at least at one surface of an electrode substrate, and the microporous section containing flake graphite having an aspect ratio in the range of 50-5000.

    CARBON FIBER MOLDING MATERIAL, MOLDING MATERIAL, AND CARBON FIBER-STRENGTHENING COMPOSITE MATERIAL

    公开(公告)号:CA2858014A1

    公开(公告)日:2013-06-13

    申请号:CA2858014

    申请日:2012-11-12

    Abstract: A carbon fiber molding material is provided that exhibits excellent interfacial adhesion between the carbon fibers and a thermosetting resin, and that yields a molded product exhibiting excellent mechanical properties. The carbon fiber molding material is either (Z) a prepreg containing sizing agent-coated carbon fibers and a thermosetting resin, or (Y) a material for forming woven fabric or braided cords that employs sizing agent-coated carbon fibers. The sizing agent is characterized by containing the following components (A) and (B): component (A) is an epoxy compound having two or more epoxy groups, or two or more functional groups; component (B) is a compound containing one or more of the group consisting of a tertiary amine compound, a tertiary amine salt, a quaternary ammonium salt, a quaternary phosphonium salt, and a phosphine compound. The sizing agent is obtained by blending 0.1-25 parts by mass of the compound (B) with 100 parts by mass of the compound (A).

    EPOXY RESIN COMPOSITION, FIBER-REINFORCED COMPOSITE MATERIAL, AND METHODFOR PRODUCING THE SAME

    公开(公告)号:CA2718171A1

    公开(公告)日:2009-10-01

    申请号:CA2718171

    申请日:2009-03-23

    Abstract: Disclosed is an epoxy resin composition having low viscosity, high Tg and high elastic modulus, while having excellent fracture toughness. Also disclosed is a fiber-reinforced composite material which has achieved excellent thermal characteristics, compressive strength, impact resistance, fatigue resistance and perforated plate tensile strength by using the epoxy resin composition for fiber-reinforced composite materials. The fiber-reinforced composite material is most suitable as a material for producing aircraft. The epoxy resin composition contains at least the following components: [A] a predetermined bifunctional epoxy resin, [B] a liquid aromatic diamine curing agent and [C] core-shell polymer particles. The epoxy resin composition is characterized in that the component [C] contains an epoxy group in the shell portion, while having a volume average particle diameter within the range of 50-300 nm.

    28.
    发明专利
    未知

    公开(公告)号:DE60217542D1

    公开(公告)日:2007-02-22

    申请号:DE60217542

    申请日:2002-11-06

    Abstract: The present invention relates to an epoxy resin composition for fiber reinforced composite material comprising the following components (1) - (3) as essential components, their mixing ratios meeting the following conditions (I) - (IV), and component (3) being dissolved homogeneously: component (1): epoxy resin that is liquid at room temperature, component (2): aromatic polyamine that is liquid at room temperature, component (3): diaminodiphenylsulfone, condition (I): The proportion of component (1) relative to the entire epoxy resin in the composition is 60-100 wt%, condition (II): The sum of the proportions of components (2) and (3) relative to the entire polyamine in the composition is 70-100 wt%, condition (III): The proportion of component (3) relative to the entire polyamine in the composition is 25-60 wt%, and condition (IV): The stoichiometric ratio of the entire polyamine to the entire epoxy resin in the composition is 0.7-1.3. Another embodiment of the invention relates to an epoxy resin composition for fiber reinforced composite material that contains at least the following components (4) - (6), forms a cured product with a theoretical molecular weight between crosslinking points in the range of 250-350 g/mol, and has an initial viscosity at 80 DEG C of 1-500 MPa.s: (4): aromatic epoxy resin with tri- or higher functionality, (5): aromatic epoxy resin with di- or higher and lower than tri-functionality, and (6): aromatic polyamine, the molecular weight between crosslinking points being defined as the weight of the entire cured epoxy resin divided by the number of crosslinking points contained in the entire cured epoxy resin. The invention also relates to an epoxy resin composition for fiber reinforced composite material that consists of the following components (7) and (8): (7) a polyglycidyl ether of phenol aralkyl resin as represented by the following formula: where R , R , R and R denote a hydrogen atom, an alkyl group having 1-8 carbon atoms, or a halogen atom, and m and n denote an integer of 1-4 and a real number of 0 or more and less than 1, respectively, and (8) polyamine. With the constitution described above, the present invention can provide a liquid epoxy resin composition for low cost production of high performance fiber reinforced composite material, that has a low viscosity at relatively low temperatures, and that after being cured, the cured product is high in glass transition temperature, elastic modulus and toughness while being small in the glass temperature decrease caused by water absorption and also small in the coefficient of linear expansion; and can provide a method to produce fiber reinforced composite material therefrom. Fiber reinforced composite material produced according to the present invention can serve as material for parts of aircraft, including main wing, tail, rotor blade, fairing, cowl, and door; parts of spacecraft, including motor case and main wing; and parts of space satellite body structure. They can also be used preferably as material for automobile chassis and railroad vehicle body structure.

    29.
    发明专利
    未知

    公开(公告)号:DE60013527T2

    公开(公告)日:2005-09-22

    申请号:DE60013527

    申请日:2000-03-10

    Abstract: An object of the invention is to provide an epoxy resin composition having a low viscosity around a room temperature and excellent reinforcing fiber impregnating properties, thereby to provide a composite material having excellent heat resistance and mechanical properties including compressive strength. According to the present invention there is provided an epoxy resin composition comprising an aromatic epoxy resin having at least di-functionality, an aromatic amine compound and/or an alicyclic amine compound, wherein 5 minutes after the main agent comprising the epoxy resin and the curing agent comprising the aromatic amine compound and/or the alicyclic amine compound are mixed, the composition shows a viscosity at 25 DEG C in the range of from 1 to 1500 mPas, and Tc, tc, and Tg satisyfy the following equation. Tg ≥ Tc + 20 - k x (Tc - 90) k = 0 when 60 ≤ Tc

    30.
    发明专利
    未知

    公开(公告)号:DE60104529D1

    公开(公告)日:2004-09-02

    申请号:DE60104529

    申请日:2001-05-28

    Abstract: This invention relates to an epoxy resin composition for a fibre-reinforced composite material, which contains the following constituent components (A), (B) and (C). (A) alicyclic epoxy resin (B) polyamine (C) latent acid catalyst which can dissolve in constituent component (A) or in constituent component (B) This epoxy resin composition is of low viscosity and is suitable for use in the moulding of fibre-reinforced composite materials by RTM or the like. More particularly, it is possible to offer an epoxy resin composition for a fibre-reinforced composite material where the cured material obtained by heating has high level heat resistance and strength properties, and which is suitable for use as aircraft components, spacecraft components, artificial satellite components and the like

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