Gas diffuser and manufacturing method therefor

TLDR: In this paper, a gas diffuser is provided where a porous carbon base material is dipped in the dispersion liquid having granular fluorocarbon resin by 1-60 wt.% relative to the entire base material, and a process (3) where the base material provided through the process (2) is hot-pressed within the surface pressure range 1 Pa-10 MPa by batch press, otherwise a process where it is hotpressed, by roll press, with a line pressure of 1-5000 N/cm, by a clearance of 30-90% of the

Abstract: PROBLEM TO BE SOLVED: To provide a gas diffuser which is flexible and comprises excellent mechanical characteristics such as high tensile strength and anti-compression characteristics. SOLUTION: A gas diffuser 4 is provided where a porous carbon base material 1 which is a collection of a plurality of carbon fibers 1a contains granular fluorocarbon resin 2 by 1-40 wt.% while the granular fluorocarbon resin binds carbon fibers together as a binder. The gas diffuser 4 is acquired by a method for manufacturing a gas diffuser which includes at least following processes (1), (2) and (3): a process (1) where the porous carbon base material is dipped in the dispersion liquid having granular fluorocarbon resin by 1-60 wt.%, a process (2) where a superfluous dispersion liquid is removed from the base material acquired through the process (1), and is dried to adjust a dried granular fluorocarbon resin into a range of 1-40 wt.% relative to the entire base material, and a process (3) where the base material provided through the process (2) is hot-pressed within the surface pressure range 1 Pa-10 MPa by batch press, otherwise a process where it is hot-pressed, by roll press, with a line pressure of 1-5000 N/cm, by a clearance of 30-90% of the thickness of base material before pressing. COPYRIGHT: (C)2003,JPO