EP2519480A2 - Corps moulé graphiteux et procédé de production - Google Patents

Corps moulé graphiteux et procédé de production

Info

Publication number
EP2519480A2
EP2519480A2 EP10803462A EP10803462A EP2519480A2 EP 2519480 A2 EP2519480 A2 EP 2519480A2 EP 10803462 A EP10803462 A EP 10803462A EP 10803462 A EP10803462 A EP 10803462A EP 2519480 A2 EP2519480 A2 EP 2519480A2
Authority
EP
European Patent Office
Prior art keywords
additive
graphite
shaped body
mixture
inorganic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10803462A
Other languages
German (de)
English (en)
Inventor
Oswin ÖTTINGER
Rainer Schmitt
Jürgen Bacher
Sylvia Mechen
Bastian Hudler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SGL Carbon SE
Original Assignee
SGL Carbon SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE200910055444 external-priority patent/DE102009055444A1/de
Priority claimed from DE102009055442A external-priority patent/DE102009055442A1/de
Priority claimed from DE102009055443A external-priority patent/DE102009055443A1/de
Priority claimed from DE102009055440A external-priority patent/DE102009055440A1/de
Priority claimed from DE102009055441A external-priority patent/DE102009055441A1/de
Priority claimed from DE201010002000 external-priority patent/DE102010002000A1/de
Priority claimed from DE102010002434.1A external-priority patent/DE102010002434B4/de
Priority claimed from DE102010002989A external-priority patent/DE102010002989A1/de
Priority claimed from DE102010041822A external-priority patent/DE102010041822A1/de
Priority claimed from US12/915,340 external-priority patent/US20120107662A1/en
Application filed by SGL Carbon SE filed Critical SGL Carbon SE
Publication of EP2519480A2 publication Critical patent/EP2519480A2/fr
Withdrawn legal-status Critical Current

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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/536—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite based on expanded graphite or complexed graphite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
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    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254—Polymeric or resinous material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/269—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3854—Woven fabric with a preformed polymeric film or sheet
    • Y10T442/3919—Including particulate material other than fiber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/50—FELT FABRIC
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet

Definitions

  • the present invention relates to a graphite-containing molded body, which is particularly suitable for use as a seal, as a building material, such as wall or ceiling paneling, as a bipolar plate, for example, for a redox flow cell, as a heat exchanger plate or as a heat exchanger tube, and a Process for its preparation.
  • Seals such as gaskets, which are used for example in chemical apparatus construction, must meet a variety of requirements. In particular, they must have a low permeability to liquids and gases, in particular, as in the case of gaskets, in the plane of the gasket. Apart from that, they must be characterized by high tensile strength, high transverse strength, good thermal conductivity, good adaptability and good dry sliding properties. For a variety of applications also a high temperature resistance and a good resistance to aggressive chemicals are essential.
  • a disadvantage of such materials produced by liquid impregnation is that the impregnating agent, in particular in the depth direction or z-direction of the material, is distributed unevenly.
  • the impregnating agent in particular in the depth direction or z-direction of the material, is distributed unevenly.
  • the inner region of the material impregnated between the surface regions has no or only a comparatively low or uneven degree of impregnation.
  • the profile of requirements for molded articles designed for other applications may include high tensile strength, high electrical conductivity or low electrical resistance and low contact resistance.
  • Examples of such shaped bodies are in particular bipolar plates, which are used in fuel cells, in redox flow cells or in lead-acid batteries. Identical or at least similar requirement profiles are also required for shaped bodies which are used, for example, as a heat exchanger plate or as a heat exchanger tube.
  • Molded body is formed to produce a seal.
  • properties of sealing materials produced in this way are better than those of liquid-impregnated sealing materials, the sum of the properties of these materials is still in need of improvement in some applications.
  • this object is achieved by providing a graphite-containing molded article which is obtainable by a process in which graphite particles with at least one solid additive to a mixture containing at least one inorganic additive, a mixture of at least one inorganic additive and at least one organic additive contains more than 10 wt .-% organic additive, are mixed and the mixture thus obtained is then compressed, wherein the at least one additive used has a determined according to ISO 13320 average particle diameter (d 5 o) between 1 and 500 ⁇ .
  • This solution is based on the surprising finding that a molded article based on graphite and graphite with a specific particle size which is obtainable in this way not only has a high degree of infiltration of pore-containing additive, but also that the pore-sealing additive over all three dimensions and in particular in the depth direction of the shaped body, ie in the z-direction of the shaped body, is homogeneously distributed.
  • the shaped body has the same properties in all three dimensions and in particular also in the plane of the shaped body, that is to say in the xy direction or the plane in which the shaped body has its longest extent, and in particular also in the xy Direction by a high tensile strength, high strength in the z-direction, high thermal conductivity, a good dry sliding property, high temperature resistance, good chemical resistance, high density and in particular surface sealing against liquids and gases and by a high stability, namely especially even with a low surface pressure of the molding.
  • the homogeneous distribution of the additive or additives over all three dimensions namely in particular ensures that the additive is present not only in the near-surface regions of the molding, but in particular also in the located between the near-surface areas inner or central region of the molding. Thereby, it is prevented that the molded article has high impermeability only in its surface areas but can diffuse gases or liquids in the interior of the molded article. Rather, a high impermeability in all dimensions and therefore in particular a high surface density is achieved by the homogeneous distribution of additives in the interior of the molded body.
  • the moldings of the invention are fast, easy and inexpensive to produce, especially by a continuous process in which, for example, a graphite particles containing gas stream continuously a solid and preferably dry additive, for example via a Conveyor screw is added and mixed with it and this mixture is then continuously passed through a roller in which the mixture is compacted.
  • the shaped body according to the invention is obtained by a process in which graphite particles are first mixed with at least one solid additive to form a mixture, before the resulting mixture is subsequently compacted.
  • the at least one additive used has a mean particle diameter (d 5 o) between 1 and 500 ⁇
  • all additives used have a corresponding mean particle diameter (d 5 o) determined by the measuring methods specified in ISO 13320.
  • particles based on all known graphites as graphite starting material, for example particles of natural graphite or of synthetic graphite.
  • Expanded graphite is understood to mean graphite that is expanded by a factor of 80 or more in the plane perpendicular to the hexagonal carbon layers compared to natural graphite, for example.
  • expanded graphite is distinguished by outstanding formability and good toothability, which is why it is particularly suitable for producing the shaped bodies according to the invention.
  • Due to its likewise high porosity, expanded graphite can also be mixed very well with additive particles having a correspondingly small particle diameter and, due to the degree of expansion, easily compacted or compacted.
  • graphite such as natural graphite is usually mixed with an intercalation compound such as nitric acid or sulfuric acid and heat-treated at an elevated temperature of, for example, 600 to 1,200 ° C.
  • expanded graphite is used which has been produced from natural graphite having a mean particle diameter (d 5 o) of at least 149 ⁇ m and preferably of at least 180 ⁇ , determined in accordance with the measuring method and sieve set specified in DIN 66165.
  • particles of expanded graphite which has an expansion of 10 to 1 .400, preferably from 20 to 700 and particularly preferably from 60 to 100.
  • These graphite particles can be mixed and compacted particularly well with particulate additives.
  • the average diameter (d 5 o) of the graphite particles is determined in accordance with the measuring method and sieve set specified in DIN 66165.
  • the mixture to be compressed contains 50 to 99 wt .-%, preferably 75 to 97 wt .-% and particularly preferably 80 to 95 wt .-% graphite particles and preferably corresponding particles of expanded graphite.
  • the molded body at a surface pressure of 20 MPa using helium as a gas (40 bar pressure) a according to DIN EN 13555 as measured at room temperature impermeability of less than 10 "1 mg / (s' m), preferably less than 10 "2 mg / (sm), and more preferably less than 10 " 3 mg / (sm).
  • the present invention comprises three basic embodiments, namely, first, a graphite-containing shaped body, which contains only inorganic additive in addition to graphite, second, a graphite-containing molding body, which contains only organic additive in addition to graphite, in an amount of more than 10 wt .-%, and third, a graphite-containing molded body, which contains both inorganic additive and organic additive in addition to graphite.
  • this or the mixture to be compressed contains preferably 1 to 50 wt .-%, particularly preferably 2 to 20 wt .-% and most preferably 3 to 10 wt .-% of one or more inorganic additives.
  • an inorganic additive which has a melting temperature of at most 1 .800 ° C., preferably between 50 and 1 000 ° C.
  • the at least one inorganic additive has a glass transition temperature of at most 1, 800 ° C., preferably between 50 and 1 000 ° C., and particularly preferably between 100 and 650 ° C.
  • the at least one inorganic additive has a sintering temperature between 50 and 950 ° C., and preferably between 100 and 600 ° C.
  • the shaped body can also contain fillers in addition to the graphite and the inorganic additive, but this does not required and not preferred. Therefore, the molded article according to the invention according to this embodiment preferably consists of the aforementioned amount of inorganic additive and balance graphite.
  • the inorganic additive may be any inorganic material. Good results are obtained, in particular, if the inorganic additive is at least one glass former and / or at least one precursor of a glass former. With such materials, a high permeability of the molding for liquid and gaseous substances is achieved, in particular at comparatively high temperatures of, for example, 250 ° C. to 600 ° C.
  • the at least one glass former and / or the at least one precursor of a glass former is a compound selected from the group consisting of phosphates, silicates, aluminosilicates, boron oxides, borates and any mixtures of two or more of the aforementioned compounds.
  • a phosphate is used as glass former, because this can be distributed well throughout the cross section of the molding.
  • particularly suitable phosphates are those selected from the group consisting of ammonium dihydrogen phosphate, polyphosphate, hydrogen phosphate, calcium phosphates and aluminum phosphates.
  • the inorganic additive is preferably selected in terms of its chemical nature and amount used so that the molding is impermeable in a temperature range between 250 and 600 ° C and in particular in a temperature range between 300 and 550 ° C, being impermeable in the context of the present invention is understood that the molding at a surface pressure of 32 MPa preferably after the TA-air after a removal for 48 hours at 300 ° C or preferably after a storage for 48 hours at 400 ° C, a leakage rate of less than 1 x 10 "4 mbarl / s ' m (1, 1 bar, helium) in development of the inventive concept it is proposed that the inorganic additive and the inorganic additives a particular according to the ISO 13320 average particle diameter in the mixture to be compacted (d 5 o) ⁇ of 0.5 to 300 and preferably from 1 to 50 ⁇ have. Further, it is in that the molded article containing only an inorganic additive according to this embodiment has a density of at least 0.7 g g
  • the molding according to the invention contains only organic additive, but no inorganic additive.
  • the mixture or the molding to be compacted is more than 10 to 50% by weight, preferably 10 to 25% Wt .-% and particularly preferably 10 to 20 wt .-% of one or more organic additives.
  • a molded article with a very high tensile strength and with a high impermeability is obtained, in particular in the z-direction of the molded article.
  • the addition of a comparatively large amount of organic additive facilitates shaping and results in better
  • the shaped body in this embodiment can also contain fillers in addition to the graphite and the organic additive, but this is not necessary and also not preferred. Therefore, according to this embodiment, the shaped article according to the invention preferably consists of the abovementioned amount of organic additive and remainder of graphite.
  • any organic material can be used as the organic additive.
  • the organic additive is a polymer selected from the group consisting of thermoplastics, thermosets, elastomers and any mixtures thereof. With such materials, especially at comparatively low temperatures of, for example, -100 ° C. to 300 ° C., a high impermeability of the molding for liquid and gaseous substances is achieved.
  • Examples of corresponding polymers are silicone resins, polyolefins, epoxy resins, phenolic resins, melamine resins, urea resins, polyester resins, polyetheretherketones, benzoxazines, polyurethanes, nitrile rubbers, such as acrylonitrile-butadiene-styrene rubber, polyamides, polyimides, polysulfones, polyvinyl chloride and fluoropolymers, such as polyvinylidene fluoride , Ethylene-tetrafluoroethylene copolymers, polytetrafluoroethylene and mixtures or copolymers of two or more of the aforementioned compounds.
  • the organic additive or the organic additives are exclusively fluorine-free polymers.
  • this has surprisingly resulted in the balance of all the required properties, such as high tensile strength, high transverse strength, high thermal conductivity, good dry slip properties. shank, high temperature resistance, good chemical resistance and high impermeability to liquids and gases, proved to be particularly advantageous.
  • fluorine-free polymers are polymers selected from the group consisting of silicone resins, polyolefins, epoxy resins, phenolic resins, melamine resins, urea resins, polyester resins, polyetheretherketones, benzoxazines, polyurethanes, nitrile rubbers, polyamides, polyimides, polysulfones and any mixtures or copolymers of two or more of the aforementioned compounds.
  • particularly suitable polyols are polyethylene and polypropylene, acrylonitrile-butadiene-styrene rubber is particularly suitable as the nitrile rubber.
  • silicone resins better sealing and in particular a significantly better surface density is achieved compared to the addition of fluoropolymers.
  • the organic additive is preferably selected such that the shaped body is impermeable in a temperature range between -100 and 300 ° C. and in particular in a temperature range between -20 and 250 ° C. and very particularly at room temperature
  • Impermeable in the context of the present invention is understood that the molding at a surface pressure of 20 MPa with helium gas (40 bar internal pressure) according to DIN EN 13555 measured in the aforementioned temperature ranges impermeability of less than 10 "1 mg / (s ' m), preferably of less than 10 "2 mg / (sm), and more preferably less than 10 " 3 mg / (sm).
  • the molding in a temperature range between -100 and 300 ° C and INS special in a temperature range between -20 and 250 ° C at a surface pressure of 20 MPa with helium as gas (1 bar helium test gas internal pressure) in a measuring apparatus based on the DIN 28090-1 at room temperature in accordance with DIN 28090-1 in measured the aforementioned temperature ranges impermeability in the z-direction of less than 10 "1 mg / (s' m 2), preferably of less than 10" 2 mg / (sm 2), and more preferably of less than 10 "3 mg / ( sm 2 ).
  • the graphite-containing molded body Due to the addition of organic additive, it is easily possible to provide the graphite-containing molded body in such a way that it has a tensile strength of from 10 to 35 MPa, and preferably from 15 to 25 MPa, measured according to DIN ISO 1924-2.
  • the or- ganic additive or organic additives a particular according to the ISO 13320 average particle diameter in the to be compacted mixture (d 5 o) ⁇ from 1 to 150, preferably ⁇ 2-30 and particularly preferably from 3 to 10 ⁇ have.
  • the molded article containing only organic additive according to this embodiment has a density of at least 1.0 g / cm 3 , preferably a density of 1.2 to 1.8 g / cm 3 and particularly preferably a density of 1, 4 to 1.7 g / cm 3 .
  • the molding according to the invention contains organic additive and inorganic additive.
  • a particular advantage of this embodiment is that, due to the combination of organic additive and inorganic additive, a high impermeability of the shaped body to liquids and gases over a very broad temperature range from comparatively very low to comparatively high temperatures is reached.
  • This can be achieved, for example, by selecting an inorganic additive and an organic additive, the inorganic additive decomposing at one in the range of the temperature and in particular just below the temperature at which the organic additive decomposes, for example by pyrolysis, combustion or a decomposition reaction is, begins, for example, initiated by a sintering or melting process to contribute to a densification of the molding and thus take over the role of the organic additive at a higher temperature.
  • the mixture to be compacted or molded 1 to 25 wt .-% inorganic additive and 1 to 25 wt .-% organic additive and preferably 3 to 20 wt .-% inorganic additive and 5 to 15 wt .-% organic additive.
  • the shaped body in this embodiment in addition to the graphite, the inorganic additive and the organic additive still fillers, but this is not necessary and not preferred. Therefore, according to this embodiment, the shaped article according to the invention preferably consists of the abovementioned amount of organic additive, inorganic additive and remainder graphite.
  • Particularly suitable inorganic additives and organic additives are those already mentioned above for the other two particularly preferred embodiments of the present invention. Particularly with the combination of glass-forming agent as inorganic additive and silicone resin as organic additive, particularly good results are achieved, above all with regard to an excellent surface density.
  • the inorganic and Organic additives on the above-mentioned for the other two particularly preferred embodiments average particle diameter.
  • the organic additive and the inorganic additive are preferably selected with regard to their chemical nature and amounts used such that the shaped body is impermeable in a temperature range between -100 and 600 ° C. and in particular in a temperature range between -20 and 550 ° C.
  • the shaped body at a surface pressure of 20 MPa with helium gas (40 bar internal pressure) in a temperature range between -100 ° C and 600 ° C and preferably between -20 ° C and 550 ° C determined according to DIN EN 13555 impermeability less than 10 "2 mg / (sm), and more preferably less than 10 " 3 mg / (sm).
  • helium gas 40 bar internal pressure
  • the molding containing both organic and inorganic additive according to this embodiment have a density of at least 0.7 g / cm 3 and preferably a density of 1, 0 to 1, 8 g / cm 3 .
  • the shaped body is formed at least substantially flat, for example as a plate, tape or foil.
  • shaped bodies of essentially flat design are also understood as meaning specially shaped articles, such as, for example, sealing rings.
  • specially shaped articles such as, for example, sealing rings.
  • the advantage of a high surface density can be used particularly well.
  • this can be provided with a two- or three-dimensionally structured reinforcement.
  • structured sheets such as spits.
  • a further subject of the present invention is a process for the production of a previously described shaped body which comprises the following steps:
  • the process according to the invention is preferably carried out continuously so as to produce the shaped bodies according to the invention rapidly, simply and inexpensively.
  • the continuous process management can be carried out, for example, in a pipeline system in which the mixing according to process step a) is carried out so that a graphite particle-containing gas stream, a solid additive is supplied for example via a screw conveyor and the thus obtained, mixed, graphite particles and additive containing gas stream for compacting according to the method step b) is guided by a roller.
  • a graphite particle-containing gas stream a solid additive is supplied for example via a screw conveyor and the thus obtained, mixed, graphite particles and additive containing gas stream for compacting according to the method step b) is guided by a roller.
  • no mixing is carried out in a static or dynamic stirring device for more than 5 minutes, in particular for more than 20 minutes and in particular for more than 1 hour, prior to compacting.
  • the mixture containing graphite particles and additive is melted and / or sintered during compaction or after compaction according to method step b).
  • this can further increase the impermeability of the molding to liquids and gases.
  • the fusion of the graphite particles with the additive particles is improved by such melting or sintering, and further pores are closed and contact points are created by the then thin-fluid additive.
  • a separate shaping step can take place, in which the shaped body is formed, for example, by forming, profiling, joining, Hot pressing, Thermoumfornnen, edge, deep drawing, embossing or punching is formed.
  • the shaping step can advantageously take place before a final compression step.
  • pre-compaction can be carried out before deformation, for example by compression.
  • the shaped body can be heated in a mold, whereby certain profiles, shapes, waves and / or embossments are generated.
  • the additive stabilizes these forms and prevents the reformation known from conventional graphite films.
  • the mechanical load capacity generated by the present invention allows for the first time to apply such methods.
  • the present invention relates to the use of a previously described graphite molded body as a sealing element, as bipolar plate of a fuel cell, a redox flow battery, as a heat conducting foil, as a molded part in the construction sector, in particular wall cladding, ceiling cladding or heat conduction, as a current conductor in lead-acid batteries or in corresponding hybrid systems, as foil or fin in PCM graphite stores, as lining material, as contacting element, as electrode material for battery systems, as heat distribution element, as surface heater, as material for winding graphite tubes with weldability of the individual layers, as stuffing box, as packages for chemical columns, as a heat exchanger plate or as a heat exchanger tube.
  • the shaped body is preferably in the form of a foil or plate with a thickness of 0.02 to 1.5 mm, particularly preferably with a thickness of 0.2 to 1 mm and completely particularly preferably formed with a thickness of 0.5 to 0.8 mm.
  • Thicker plates can be produced, for example, by pressing, gluing, hot-bonding of two individual shaped bodies. This is possible with or without printing and by using adhesives, adhesion promoters or by the additive present in the molding. The direct weldability of two shaped bodies is particularly preferred.
  • a felt which preferably contains graphite and / or carbon and particularly preferably graphite and / or carbon fibers.
  • the connection can be made for example by gluing.
  • a conductive adhesive may be used, such as an adhesive filled with silver particles, carbon particles or graphite particles.
  • Such a compound can also be made by melting or by sintering with a plastic, in particular a polymer described above for the organic additive. In the simplest case, therefore, a felt is thermally bonded to a molding according to the invention without further materials.
  • the density of the felt is preferably 0.01 to 0.2 g / cm 3 .
  • the specific electrical resistance, measured in the felt plane is preferably between 0.5 and 15 ohm mm and the specific electrical resistance measured perpendicular to the felt plane, preferably between 2 and 20 ohm mm. These values refer to a compression of the felt of 20 to 30%. With stronger or weaker compression, the specific electrical resistance is correspondingly lower or higher.
  • the specific surface of the felt is preferably between 0.2 and 300 m 2 / g.
  • the molded article according to the invention as a molded part in the construction sector, in particular as wall cladding, ceiling cladding or réelleleitplatte, it has proven to be advantageous to provide the molded body plastically deformable and, for example, in the form of a plate, so that the molding at the installation simply to predetermined Contours of walls or ceilings, such as edges, bends, corners, friezes and the like, can be molded. Subsequently, the plate can then be finally consolidated at the installation site, for example by heating the still plastically deformable plate in the installed state.
  • the shaped body according to the invention can be used before or after a complete curing or before or after a melting and / or sintering of the additive.
  • the shaped body after a partial curing, melting and / or sintering of the additive, wherein the final curing, melting and / or sintering of the additive takes place, for example, when used at the operating temperature.
  • a high density of the molded body occurs only in the course of use. This has the advantage that in the mold, the moldability to achieve a better adaptation of the molding is possible, for example, to tightly connected parts.
  • a further subject matter of the present invention is the use of a previously described graphite-containing shaped body in a method for connecting the shaped body to another shaped body, wherein the other shaped body is, for example, a graphite foil, a metal foil, a metal sheet, a metal foil. tallblock, a textile fabric, preferably a felt body, or may be a previously described molding.
  • the bonding of the shaped body takes place without additional adhesive.
  • Such an adhesive is dispensable in the use according to the invention because the organic additive contained in the shaped body acts as a binder and thus allows the two bodies to be welded together.
  • Figure 1 is a graphite-containing molded body according to the prior art
  • FIG. 2 shows a graphite-containing molded body according to an embodiment of the present invention.
  • FIG. 1 shows a schematic cross section of a graphite-shaped molded body 1 according to the prior art which is designed as a plate.
  • This shaped body 1 contains pressed, expanded graphite 2 and a liquid binder 3, wherein the binder 3 has subsequently been introduced into the shaped body 1 by liquid or melt impregnation from the side surfaces of the shaped body 1. Due to the incorporation of the binder 3 by liquid or melt impregnation this is only unevenly and especially superficially penetrated into the molded body 1, which is why especially between the surface areas lying inner region, such as lying in the oval, dashed border area 4, little binder Contains 3 or is almost binder-free.
  • the characteristics of the Shaped body 1, in particular the mechanical strength and the impermeability, of the molded body 1, especially in the depth direction or z-direction, the inner region of the shaped body 1 lying between the surface regions having a poorer impermeability and poorer mechanical properties than the surface areas of the shaped body 1 has.
  • the molded body 5 according to the present invention shown in FIG. 2 consists of particles 6 of expanded graphite, which are configured worm-shaped or concertina-shaped in a known manner, as well as of additive particles 7.
  • the additive particles 7 are uniformly distributed in the shaped body 5 according to the invention in all dimensions of the shaped body 5, and in particular also in the inner area of the shaped body 5 lying between the surface areas.
  • the graphite particles 6 were first homogeneously mixed with the solid additive particles 7 before the mixture thus produced was compacted and shaped into the desired shape.
  • Expanded graphite having a bulk density of 3.5 g / l was treated with a silicone resin powder, namely Silres MK from Wacker Chemie AG in Burghausen, Germany, to form an 80% by weight expanded graphite and 20% by weight silicone rubber. mixture containing resin powder and then mixed in a container for 1 minute.
  • a silicone resin powder namely Silres MK from Wacker Chemie AG in Burghausen, Germany
  • the mixture thus obtained was then transferred to a steel tube of 90 mm diameter, pressed with a pressure piston by its own body weight and taken as a pre-compact with a density of about 0.07 g / cm 3 . Subsequently, the pre-compact was compressed with a press to the desired film thickness of 1 mm and the resulting doped film was conditioned at 180 ° C for 60 minutes to melt the plastic.
  • Comparative Example 1 According to the method described for Example 1, two graphite foils were produced, except that only expanded graphite and no additive were used for their production.
  • the additive improves the impermeability.
  • the addition of additive achieves a certain level of tightness even at significantly lower surface pressures.
  • the mixture thus obtained was then transferred to a steel tube of 90 mm diameter, pressed with a pressure piston by its own body weight and taken as a pre-compact with a density of about 0.07 g / cm 3 . Subsequently, the pre-compacts were compressed with a press to the desired film thickness of 1 mm and the resulting doped film was conditioned at 180 ° C for 60 minutes.
  • a graphite foil was produced according to the procedures described for Examples 2 and 3, except that exclusively expanded graphite and no additive were used for their production.
  • the leakage rate was measured according to DIN 28090-1 with nitrogen as the test gas and 32 MPa surface pressure based on a basis weight of the molded body of 2,000 g / m 2 .
  • Expanded graphite with a bulk density of 3.5 g / l was admixed with ammonium dihydrogen phosphate (NHH 2 PO 4 ) for Examples 4 and 5 and ammonium hydrogenphosphate (NH) 2 HPO 4 for Examples 6 and 7 as inorganic filler 95 wt .-% expanded graphite and 5 wt .-% inorganic filler containing mixtures added, which were then mixed in a container for 1 minute.
  • ammonium dihydrogen phosphate (NHH 2 PO 4 ) for Examples 4 and 5
  • ammonium hydrogenphosphate (NH) 2 HPO 4 ammonium hydrogenphosphate
  • the mixtures thus obtained were then transferred to a steel tube of 90 mm diameter, pressed with a pressure piston by its own body weight and removed as a pre-compact with a density of about 0.07 g / cm 3 . Subsequently, the preform was compressed with a press to the desired film thickness of 1 mm and the resulting doped films were at different conditions, which are summarized in the following Table 3, conditioned.
  • the leakage rate was measured according to DIN 28090-1 with nitrogen as the test gas and 32 MPa surface pressure based on a basis weight of the molded article of 2,000 g / m 2 .
  • Comparative Example 3 A graphite foil was produced according to the methods described for Examples 4 to 7, except that exclusively expanded graphite and no additive were used for their production.
  • the leakage rate was measured according to DIN 28090-1 with nitrogen as the test gas and 32 MPa surface pressure based on a basis weight of the molded body of 2,000 g / m 2 .
  • Example 8 Expanded graphite having a bulk density of 3.5 g / l was mixed with a polypropylene powder, namely with Licocene PP 2602 Clariant, Germany, to a 80 wt .-% expanded graphite and 20 wt .-% polypropylene polymer powder mixture and then in a container for 1 minute mixed.
  • a polypropylene powder namely with Licocene PP 2602 Clariant, Germany
  • the mixture thus obtained was then transferred to a steel tube of 90 mm diameter, pressed with a pressure piston by its own body weight and taken as a pre-compact with a density of about 0.07 g / cm 3 . Subsequently, the pre-compact was compressed with a press to the desired film thickness of 0.6 mm and the resulting doped film was removed at 180 ° C for 60 minutes to melt the plastic.
  • the impermeability of the molding in the z-direction at a surface pressure of 20 MPa with helium as gas (1 bar helium test gas internal pressure) in a measuring apparatus based on DIN 28090-1 at room temperature was determined.
  • the tensile strength of the graphite-containing molded body was determined according to DIN ISO 1924-2. The values obtained are summarized in Table 4 below.
  • Comparative Example 4 According to the method described for Example 8, a molded article was produced in the form of graphite foils, except that exclusively expanded graphite and no additive were used in the production.
  • the impermeability of the shaped body in the z-direction at a surface pressure of 20 MPa with helium as gas (1 bar helium test gas internal pressure) was determined a measuring apparatus based on DIN 28090-1 determined at room temperature.
  • the tensile strength of the graphite-containing molded body was determined according to DIN ISO 1924-2. The values obtained are summarized in Table 4 below.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Fuel Cell (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Laminated Bodies (AREA)
  • Sealing Material Composition (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Inert Electrodes (AREA)

Abstract

L'invention concerne un corps moulé graphiteux obtenu par un procédé, selon lequel on mélange des particules de graphite à au moins un additif solide pour obtenir un mélange, ledit mélange contenant au moins un additif inorganique, un mélange composé d'un additif inorganique et d'un additif organique ou de plus de 10 % en poids d'un additif organique; et le mélange ainsi obtenu est ensuite comprimé, ledit au moins un additif utilisé présente des particules d'un diamètre moyen (d50) déterminé selon la norme ISO 13320 compris entre 1 et 500 µm.
EP10803462A 2009-12-31 2010-12-31 Corps moulé graphiteux et procédé de production Withdrawn EP2519480A2 (fr)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
DE102009055442A DE102009055442A1 (de) 2009-12-31 2009-12-31 Graphithaltige Platte und Verfahren zur Herstellung einer graphithaltigen Platte
DE102009055443A DE102009055443A1 (de) 2009-12-31 2009-12-31 Decken- oder Wandelement
DE102009055440A DE102009055440A1 (de) 2009-12-31 2009-12-31 Decken- oder Wandelement mit einem Heiz- oder Kühlregister
DE102009055441A DE102009055441A1 (de) 2009-12-31 2009-12-31 Einrichtung zur Temperierung eines Raumes
DE200910055444 DE102009055444A1 (de) 2009-12-31 2009-12-31 Graphithaltiger Formkörper und Verfahren zu seiner Herstellung
DE201010002000 DE102010002000A1 (de) 2010-02-16 2010-02-16 Wärmeableiter und elektrischer Energiespeicher
DE102010002434.1A DE102010002434B4 (de) 2010-02-26 2010-02-26 Temperiersystem
DE102010002989A DE102010002989A1 (de) 2010-03-17 2010-03-17 Materialzusammensetzung, deren Herstellung und Verwendung
DE102010041085 2010-09-20
DE102010041822A DE102010041822A1 (de) 2010-09-30 2010-09-30 Thermosolares Verkleidungselement
US12/915,340 US20120107662A1 (en) 2010-10-29 2010-10-29 Thermal management matrix
PCT/EP2010/070976 WO2011080336A2 (fr) 2009-12-31 2010-12-31 Corps moulé graphiteux et procédé de production

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EP2519480A2 true EP2519480A2 (fr) 2012-11-07

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EP10803462A Withdrawn EP2519480A2 (fr) 2009-12-31 2010-12-31 Corps moulé graphiteux et procédé de production
EP10798152.4A Active EP2519479B1 (fr) 2009-12-31 2010-12-31 Matériau composite stratifié pour utilisation dans une batterie à circulation d'oxydo-réduction (redox-flow)
EP10803103A Withdrawn EP2519576A1 (fr) 2009-12-31 2010-12-31 Plaque contenant du graphite et procédé de fabrication d'une plaque contenant du graphite

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EP10798152.4A Active EP2519479B1 (fr) 2009-12-31 2010-12-31 Matériau composite stratifié pour utilisation dans une batterie à circulation d'oxydo-réduction (redox-flow)
EP10803103A Withdrawn EP2519576A1 (fr) 2009-12-31 2010-12-31 Plaque contenant du graphite et procédé de fabrication d'une plaque contenant du graphite

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EP (3) EP2519480A2 (fr)
JP (2) JP2013527964A (fr)
KR (2) KR20120112676A (fr)
CA (3) CA2786143A1 (fr)
ES (1) ES2641013T3 (fr)
SG (1) SG182294A1 (fr)
WO (3) WO2011080334A2 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8785023B2 (en) 2008-07-07 2014-07-22 Enervault Corparation Cascade redox flow battery systems
US8916281B2 (en) 2011-03-29 2014-12-23 Enervault Corporation Rebalancing electrolytes in redox flow battery systems
US8980484B2 (en) 2011-03-29 2015-03-17 Enervault Corporation Monitoring electrolyte concentrations in redox flow battery systems
EP2631584B1 (fr) * 2012-02-22 2014-04-09 Zehnder Verkaufs- und Verwaltungs AG Radiateur
DE102012204124A1 (de) 2012-03-15 2013-09-19 Sgl Carbon Se Wärmeleitendes Verbundelement auf Basis von expandiertem Graphit
DE102012024753A1 (de) 2012-12-19 2014-06-26 Eisenhuth Gmbh & Co. Kg Rahmen mit integrierter Bipolarplatte für elektrochemischen Reaktor
JP2015138692A (ja) * 2014-01-23 2015-07-30 東洋紡株式会社 一体化炭素電極
KR101580405B1 (ko) * 2014-08-14 2015-12-28 일도에프엔씨(주) 레독스 플로우 배터리용 플로우프레임 일체형 분리판 바이폴라 플레이트
CN107108228B (zh) * 2014-11-25 2020-05-12 东洋炭素株式会社 膨胀石墨片材和使用该膨胀石墨片材的电池
KR102000658B1 (ko) * 2015-08-21 2019-07-16 롯데케미칼 주식회사 레독스 흐름 전지용 전극의 제조 방법 및 레독스 흐름 전지
KR101693438B1 (ko) * 2015-09-15 2017-01-05 한국해양대학교 산학협력단 생물전기화학전지용 전극 결합제 및 그 제조 방법
TW201817597A (zh) * 2016-05-26 2018-05-16 東洋炭素股份有限公司 複合體及複合體之製造方法
CN105968706A (zh) * 2016-07-11 2016-09-28 南通星球石墨设备有限公司 一种石墨管
CN106848346B (zh) * 2017-03-06 2019-07-26 昆山知氢信息科技有限公司 液流电池用双极板及其制备方法
CN109096693A (zh) * 2018-07-10 2018-12-28 天长市优信电器设备有限公司 一种耐撕裂电动汽车充电器外壳
DE102021203265B3 (de) 2021-03-31 2022-09-22 Sgl Carbon Se Separatorplatte
EP4163090B8 (fr) 2021-10-08 2026-04-29 Branson Ultraschall Niederlassung der Emerson Technologies GmbH & Co. oHG Dispositif de connexion par transmission, procédé de connexion utilisant le dispositif ainsi que structure de connexion résultante
KR102653132B1 (ko) 2021-11-11 2024-04-02 금성테크 주식회사 재활용된 흑연 압출 성형체 및 이의 제조방법
KR102685517B1 (ko) 2023-09-27 2024-07-15 김태정 흑연전극봉용 흑연압출재 및 이를 통해 형성된 흑연전극봉
KR102944471B1 (ko) 2023-10-23 2026-03-30 주식회사 카보랩 흑연전극봉용 흑연압출재 제조방법 및 흑연전극봉 제조방법

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6794078B1 (en) * 1999-12-06 2004-09-21 Hitachi Chemical Company, Ltd. Fuel cell, fuel cell separator, and method of manufacture thereof

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB991581A (en) 1962-03-21 1965-05-12 High Temperature Materials Inc Expanded pyrolytic graphite and process for producing the same
US3492197A (en) * 1965-03-22 1970-01-27 Dow Chemical Co Novel compressed cohered graphite structures and method of preparing same
JPS5756512B2 (fr) * 1974-07-19 1982-11-30
US4214969A (en) * 1979-01-02 1980-07-29 General Electric Company Low cost bipolar current collector-separator for electrochemical cells
JPS62162671A (ja) * 1986-01-14 1987-07-18 新日本製鐵株式会社 炉底耐火物目地材用膨張黒鉛シ−ト
JPH0273881A (ja) * 1988-09-09 1990-03-13 Agency Of Ind Science & Technol グランドパッキンの製造法
JPH06290796A (ja) * 1993-03-30 1994-10-18 Shin Etsu Polymer Co Ltd ２次電池用反応電極層付双極板
US5882570A (en) * 1994-06-20 1999-03-16 Sgl Technic, Inc. Injection molding graphite material and thermoplastic material
JP3259751B2 (ja) * 1994-12-28 2002-02-25 日本電信電話株式会社 温度差電池
JP3976822B2 (ja) * 1996-09-30 2007-09-19 積水化学工業株式会社 可撓性グラファイト複合難燃組成物及び難燃シート
JP3455466B2 (ja) * 1998-04-07 2003-10-14 日立化成工業株式会社 燃料電池及び燃料電池用セパレータ
DE59811481D1 (de) * 1998-09-16 2004-07-01 Schunk Kohlenstofftechnik Gmbh Kunststoffplatte sowie verfahren zur herstellung einer solchen
CH710862B1 (de) * 1999-11-26 2016-09-15 Imerys Graphite & Carbon Switzerland Sa Verfahren zur Herstellung von Graphitpulvern mit erhöhter Schüttdichte.
JP2001196085A (ja) * 2000-01-14 2001-07-19 Toray Ind Inc 多孔質導電シート
DE10060839A1 (de) * 2000-12-07 2002-06-13 Sgl Carbon Ag Imprägnierter Körper aus expandiertem Graphit
JP2004043549A (ja) * 2002-07-09 2004-02-12 Chuo Techno Service:Kk 非凝集性雲母粒子、その製法及び雲母粒子含有塗工層を有する防湿性紙
JP2004123805A (ja) * 2002-09-30 2004-04-22 Daikyo Kagaku Kk 難燃性ポリビニルアルコール合成繊維とその製造方法
JP2004303453A (ja) * 2003-03-28 2004-10-28 Nichias Corp 燃料電池用セパレータの製造方法
EP1611056B1 (fr) * 2003-03-31 2018-04-04 Young Woo Shin Procede de fabrication de produits en graphite expanse
DE10341255B4 (de) * 2003-09-04 2005-06-16 Sgl Carbon Ag Wärmeleitplatten aus expandiertem Graphit sowie Verfahren zu ihrer Herstellung
DE10356376B3 (de) * 2003-12-03 2005-06-09 Sgl Carbon Ag Kohlenstoffsteine mit geeigneter Porosität und Verfahren zu deren Herstellung
EP1588994B1 (fr) * 2004-04-16 2007-10-24 Sgl Carbon Ag Procédé pour la fabrication des corps en graphit expansé
CN100583523C (zh) * 2004-12-20 2010-01-20 大日本油墨化学工业株式会社 燃料电池隔板用片状成形材料、其制造方法及燃料电池用隔板
JP5212984B2 (ja) * 2006-04-05 2013-06-19 独立行政法人産業技術総合研究所 黒鉛粘土複合材の製造方法
US20080277628A1 (en) * 2007-05-08 2008-11-13 Aruna Zhamu Exfoliated graphite composite compositions for fuel cell flow field plates
DE102007037435B4 (de) * 2007-08-08 2012-03-22 Sgl Carbon Se Schichtstoff
JP5169517B2 (ja) * 2008-06-16 2013-03-27 藤倉化成株式会社 導電性接着剤および電子部品
CN101538381B (zh) * 2009-04-22 2011-06-15 南京固柏橡塑制品有限公司 纤维增强石墨橡胶板

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6794078B1 (en) * 1999-12-06 2004-09-21 Hitachi Chemical Company, Ltd. Fuel cell, fuel cell separator, and method of manufacture thereof

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WO2011080334A3 (fr) 2011-10-20
EP2519479B1 (fr) 2017-08-23
WO2011080339A1 (fr) 2011-07-07
US20130040194A1 (en) 2013-02-14
EP2519479A2 (fr) 2012-11-07
JP2013516374A (ja) 2013-05-13
CA2786180A1 (fr) 2011-07-07
CA2786143A1 (fr) 2011-07-07
WO2011080334A2 (fr) 2011-07-07
WO2011080336A3 (fr) 2011-10-20
KR20120110151A (ko) 2012-10-09
WO2011080336A2 (fr) 2011-07-07
SG182294A1 (en) 2012-08-30
JP2013527964A (ja) 2013-07-04
EP2519576A1 (fr) 2012-11-07
CA2786134A1 (fr) 2011-07-07
ES2641013T3 (es) 2017-11-07
KR20120112676A (ko) 2012-10-11

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