There is provided a graphite composite film including a graphite film and a metal layer formed on a surface of the graphite film, in which peeling-off of the metal layer from the graphite film is suppressed. More specifically, the graphite composite film includes a graphite film and a metal layer formed on at least one side of the graphite film, wherein the graphite film has a plurality of through holes formed therein, a metal layer is formed also inside the through holes so as to be connected to the metal layer formed on a surface of the graphite film, the metal layer inside the through holes is formed continuously from the one side to an opposite side of the graphite film, and a distance between outer diameters of the through holes is 0.6 mm or less and a ratio of an area of metal inside the through holes to an area of the graphite composite film is 1.4% or more.

Graphite composite film

A dope (24) containing a solvent and a precursor of a solid electrolyte is cast onto a belt (94) to form a casting membrane (61). The casting membrane (61) is immersed in a contact liquid (100) in a liquid bath (83) and peeled as a wet precursor membrane (67) from the belt (94) when having a self-supporting property. The solvent contained in the wet precursor membrane (67) is substituted by the contact liquid (100), and the wet precursor membrane (67) is transported out of the liquid bath (83). After being dried in a tenter device (85), the wet precursor membrane (67) is contacted with a proton solution (110) in a proton substitution chamber (86) to perform proton substitution to the precursor contained in the wet precursor membrane (67), and then dried in a drying chamber (87) to be a solid electrolyte membrane (77).

Solid electrolyte membrane, method and apparatus for producing the same, membrane electrode assembly and fuel cell

A resin composition of the present invention contains a mixture (A) of at least two of cyanate ester compounds selected from the group consisting of cyanate ester compounds (A1) to (A3) having a specific structural unit, an epoxy resin (B), and an inorganic filler (C). A prepreg of the present invention is obtained by impregnating a base material with the resin composition or applying the resin composition to a base material. Furthermore, a metal foil-clad laminate of the present invention is the laminate comprising the prepreg. Furthermore, a printed wiring board of the present invention contains an insulating layer and a conductor layer formed on a surface of the insulating layer, in which the insulating layer contains the resin composition.

Resin composition, prepreg and laminate

A graphite film which is low in graphite dust generation can be produced by properly selecting acid dianhydride and diamine which constitute a polyimide film, which polyimide film is a raw material of the graphite film. Specifically, the graphite film which is low in graphite dust generation can be obtained if (1) the acid dianhydride is PMDA and the diamine has a molar ratio of ODA/PDA in a range of 100:0 to 80:20, or (2) the acid dianhydride has a molar ratio of PMDA/BPDA in a range of 80:20 to 50:50, and the diamine has a molar ratio of ODA/PDA in a range of 30:70 to 90:10.

Graphite film and process for producing graphite film

A cyanate ester compound represented by the formula (1), wherein Ar2 represents a phenylene group, a naphthylene group or a biphenylene group, Ar1 represents a naphthylene group or a biphenylene group when Ar2 is a phenylene group, or Ar1 represents a phenylene group, a naphthylene group or a biphenylene group when Ar2 is a naphthylene group or a biphenylene group, Rx represents all substituents of Ar1, each Rx is the same or different and represents hydrogen, an alkyl group or an aryl group, Ry represents all substituents of Ar2, each Ry is the same or different and represents hydrogen, an alkyl group or an aryl group, and n is an integer of 1 to 50.

Novel cyanate ester compound, flame-retardant resin composition, and cured product thereof

PROBLEM TO BE SOLVED: To solve the problems such as (1) the impartment of electric insulating properties, (2) the falling-off of a powder from graphite and (3) the adhesion/sticking of graphite with another base material, etc. when utilizing a graphite film as a heat conductive sheet. SOLUTION: The composite heat conductive sheet is composed of the graphite film and a pressure-sensitive adhesive resin composition and formed using a reaction curable polyester polymer as the pressure-sensitive adhesive resin composition. The composition contains a vinyl polymer having at least one group, which is selected from the group consisting of a crosslinkable silyl group, an alkenyl group, a hydroxy group, an amino group, a group having a polymerizable carbon-carbon double bond and an epoxy group, in its molecule as an essential component. COPYRIGHT: (C)2007,JPO&INPIT

Heat conductive sheet

PROBLEM TO BE SOLVED: To provide a direct methanol fuel cell membrane hardly permeating alcohol such as methanol in addition to characteristics of the fuel cell membrane represented by proton conductivity. SOLUTION: This direct alcohol fuel cell membrane is made from an aromatic polymer compound into which proton conductive substituent groups are introduced and/or an aromatic polymer compound to which proton conductive substances are mixed, and is preferable to have a hydrolysis resistance in boiling water of 0.5 hours or more. COPYRIGHT: (C)2004,JPO

Direct methanol fuel cell membrane and its manufacturing method

PROBLEM TO BE SOLVED: To provide a proton conductive membrane for direct type alcohol fuel cell having a high proton conductivity and excellent blocking property to alcohol. SOLUTION: This proton conductive membrane for direct type alcohol fuel cell mainly comprises a polyimide partly including a proton conductive substituent.

Proton conductive membrane for direct type alcohol fuel cell and direct type alcohol fuel cell utilizing the same

PROBLEM TO BE SOLVED: To provide a method for producing a sulfonated polymer film, realizing the development of characteristics such as proton conductivity, gas barrier property and mechanical characteristics uniformly, hardly forming defects in a joined part in the preparation of a film-electrode junction material and useful as a fuel cell film without having wrinkles, swells and unevenness. SOLUTION: This method for producing the sulfonated polymer film consisting of (B) a polymer compound obtained by substituting sulfonic acid group at a part of an aromatic ring of (A) a polymer compound having an aromatic ring is provided by comprising a process of drying the film by applying a tension to the film or a process of drying by fixing the film on a frame body, etc. COPYRIGHT: (C)2003,JPO

Method for producing sulfonated polymer film

PROBLEM TO BE SOLVED: To provide a polymer film containing a sulfonic group having proton conductivity, excellent mechanical characteristics, and a high methanol blocking property useful as a polymer electrolyte film for a solid polymer fuel cell and a direct-alcohol fuel cell SOLUTION: By obtaining a crystalline polymer film containing a sulfonic group by the sulfonation of a PPS film with a crystallinity of 25% or more, a polymer electrolyte film for the solid polymer fuel cell and the direct-methanol fuel cell with high proton conductivity, excellent mechanical characteristics and a high methanol blocking property can be obtained Further, by applying heat treatment at a temperature between a recrystallization temperature and a melting point, the PPS film with the crystallinity of 25% or more can be formed COPYRIGHT: (C)2004,JPO&NCIPI

Kiyoyuki Minamimura

Papers

Heat conductive sheet

Direct methanol fuel cell membrane and its manufacturing method

Proton conductive membrane for direct type alcohol fuel cell and direct type alcohol fuel cell utilizing the same

Method for producing sulfonated polymer film

Polyphenylene sulfide film and its forming method