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Fluid permeable flexible graphite article with enhanced electrical and thermal conductivity

A technology of graphite parts and fluids, applied in electrical components, circuits, structural parts, etc., can solve problems such as disadvantages

Inactive Publication Date: 2006-04-12
格拉弗技术公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This very large difference in properties, i.e. direction-dependent anisotropy, is disadvantageous in some applications

Method used

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  • Fluid permeable flexible graphite article with enhanced electrical and thermal conductivity
  • Fluid permeable flexible graphite article with enhanced electrical and thermal conductivity
  • Fluid permeable flexible graphite article with enhanced electrical and thermal conductivity

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Embodiment Construction

[0021] Graphite is a crystalline form of carbon comprising atoms covalently bonded in flat layered planes with weak bonding forces between the planes. Graphite particles, such as natural graphite flakes, are treated with intercalation such as sulfuric and nitric acid solutions to react the graphite crystalline structure to form graphite and intercalated compounds. The treated graphite particles are hereinafter referred to as "intercalated graphite particles". After exposing intercalated graphite particles to high temperature, their size expands 80 times or more than their original volume in a zigzag shape along the "c" direction, that is, along the direction perpendicular to the graphite crystallization plane. The exfoliated graphite particles are worm-like in appearance, so they are generally called worms. Worms can be compressed together into flexible sheets which, unlike raw graphite chips, can be formed and cut into various shapes and provided with small lateral openings ...

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Abstract

Fluid permeable graphite article in the form of a perforated flexible graphite sheet having increased electrical and thermal conductivity transverse to the surfaces of the sheet.

Description

field of invention [0001] The present invention relates to a graphite member formed from an isotropic flexible graphite sheet which is fluid permeable in the transverse direction and has enhanced electrical and thermal conductivity. Background technique [0002] Graphite is composed of hexagonal arrays or networks of layered planes of carbon atoms. These hexagonally arranged layered planes of carbon atoms are substantially planar and are oriented or ordered to be generally parallel and equidistant from each other. Generally flat, parallel equidistant sheets or layers of carbon atoms, often called basal planes, joined or bonded together, groups of which are arranged in grains. Highly ordered graphite consists of very large sized grains: the grains are highly aligned or oriented to each other and have well-ordered carbon layers. In other words, highly ordered graphite has a high degree of preferred grain orientation. It should be noted that graphite has an anisotropic struc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/90H01M4/96H01M8/10C04B35/52C01B31/04C04B35/536H01M4/88
CPCH01M8/1002C04B35/536H01M4/8605H01M4/96Y02E60/521H01M8/1007Y02E60/50
Inventor R·A·梅库里T·W·韦伯M·L·瓦德里普
Owner 格拉弗技术公司