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Layered material

A layered material, graphite material technology, applied in fuel cells, layered products, components of fuel cells, etc., can solve problems such as reduced thermal conductivity

Inactive Publication Date: 2013-10-02
SGL CARBON SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also in the manufacture of layered materials that are used to conduct, transfer or distribute heat, it is often necessary to use expensive thermally conductive adhesives, because the low thermal conductivity of conventional adhesives makes the adhesive layer The thermal conductivity of the shaped material is significantly reduced in the direction perpendicular to the bonding plane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0054] A compound consisting of 80% by weight of ground expanded graphite (average particle size about 200 μm) and 20% by weight of polypropylene (melting point: 163° C.) was produced by means of a twin-screw extruder. Dimensions 80 x 50 x 3mm are made from this composite by die casting 3 board. For the same size, the density is 1.0g / cm 3 Graphite foils were cleaned and coated on one side thinly with an aqueous emulsion of perfluorocarbons (30% by weight solids). After drying the coating at 80° C. for 2 minutes, the graphite foil was placed with the coated side on the die-cast composite plate. The two structural parts were pressed in a press at 120° C. and 3 MPa for 3 hours. The composite is released only by destroying the graphite foil.

example 2

[0056] A compound was produced by means of a twin-screw extruder from 60% by weight of ground expanded graphite (average particle size about 10 μm) and 40% by weight of polyamide 6.6 (melting point: 263° C.) and Pressed into a size of 200×200×5mm 3 board. The pair size is 200×200×5mm 3 The density is 1.8g / cm 3 A graphite foil was cleaned and thinly coated on one side with an aqueous emulsion of perfluorocarbons (30% by weight solids). After drying the coating at 80° C. for 2 minutes, the graphite foil was placed with the coated side on the extruded composite sheet. The two structural parts were pressed in a press at 160° C. for 1 hour at 3 MPa. Thus, the density of the graphite foil is increased to 1.2g / cm 3 . The composite is released only by destroying the graphite foil.

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PUM

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Abstract

The invention relates to a layered material which consists of at least one ply of a graphite-filled polymer material or a ply of a ceramic material and in which a non-detachable connection is present between the materials, and the materials are connected by means of an interface-active, adhesion-promoting substance from the group consisting of organosilicon compounds, metal soaps or perfluorinated compounds.

Description

technical field [0001] The invention relates to a layered material consisting of at least one layer of compressible graphite material and at least one other layer of graphite-filled polymer There is a non-releasable connection between the layer of material and the graphite; and the invention relates to a method for producing such a layered material. Background technique [0002] Layered materials made of metal plates or sheets and of plates or foils made by compacting vermicular graphite or expanded graphite are known (US 3,404,061; DE-OS 2518351; US4,442,894; Firmenprospekt TM SIGRAFLEX der SGL Technologies GmbH). The layered material is used primarily as a flat seal for furnace assemblies, radiation shields, deposition plates in electrostatic precipitators, and for corrosion-resistant housings. [0003] In such layered materials, the arrangement and sequence of the individual layers can be chosen largely freely and adapted to the intended application. In most cases, gra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00H01M8/00C04B37/00
CPCB32B9/00H01M8/02Y02E60/528H01M8/188B32B9/007B32B2307/202B32B2307/302Y02E60/50
Inventor 梅尔廷·克里斯特奥斯温·奥廷格维尔纳·朗格尔西尔维亚·梅西恩于尔根·巴赫尔巴斯蒂安·胡德雷尔
Owner SGL CARBON SE
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