US 8,092,908 B2 · Graphite film and graphite composite film

Abstract

An object of the present invention is to provide a graphite film, and a graphite composite film both having an excellent thermal diffusivity which can sufficiently manage heat dissipation of electronic instruments, precision instruments and the like, along with an excellent flex resistance which can withstand application to bent portions. Means for Resolution of the present invention is a graphite film exhibiting the number of reciprocal foldings being 10,000 times or more as measured using a rectangular strip test piece having a width of 15 mm until the test piece breaks in a MIT folding endurance test under conditions of: a curvature radius R of the bending clamp being 2 mm; a left-and-right bending angle being 135°; a bending rate being 90 times/min; and a load being 0.98 N.

Claims7

Dependent claims

A graphite film exhibiting the number of reciprocal foldings being 10,000 times or more as measured according to a folding endurance test with a rectangular strip test piece having a width of 15 mm until the test piece breaks under conditions of:

a curvature radius R of a bending clamp being 2 mm;
a left-and-right bending angle being 135 degrees;
a bending rate being 90 times/min;
and a load being 0.98 N.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

12/600,389Filed 15 May 2008

Priority

JP 2007-13212017 May 2007

Published

US 2010/0196716 A15 Aug 2010

Granted

10 Jan 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification25 codes

C09K 5/14
Materials not undergoing a change of physical state when used: solid materials, e.g. powdery or granular
B32B 5/18
Layered products characterised by the non- homogeneity or physical structure , i.e. comprising a fibrous, filamentary, particulate or foam…
B32B 7/12
Interconnection of layers: using interposed adhesives or interposed materials with bonding properties
B32B 9/007
Comprising one layer of ceramic material, e.g. porcelain, ceramic tile: comprising carbon, e.g. graphite, composite carbon

Graphite film and graphite composite film

Life of this patent

Graphite film and graphite composite film

Life of this patent

Abstract

Claims7