METHODS FOR PRODUCING GLASSLIKE CARBON

Abstract

A glasslike carbon is produced by pouring a thermosetting resin having a viscosity of 200 P or less and a mold shrinkage ratio of 2.0% to 8.0% into a concave portion of a mold, forming the thermosetting resin in the mold by heating, demolding the formed resin, and carbonizing the demolded resin.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A, 1B, 1C, and 1D are cross-sectional views illustrating a method as an embodiment of the present invention;

FIG. 2 is a scanning electron micrograph of a glasslike carbon according to Example 3; and

FIGS. 3A, 3B, and 3C are cross-sectional views illustrating a conventional method for forming and curing a resin to yield a glasslike carbon having a convex portion.

Claims

1. A method for producing a glasslike carbon having at least one convex portion on its surface, comprising the steps of: pouring a thermosetting resin having a viscosity of 200 P or less and a mold shrinkage ratio of 2.0% to 8.0% into at least one concave portion of a mold;forming the thermosetting resin in the mold by heating;demolding the formed resin; andcarbonizing the demolded resin.

2. The method according to claim 1, wherein the thermosetting resin has a mold shrinkage ratio of 3.0% to 7.0%, and wherein the glasslike carbon has a minimum width dimension of the at least one surficial convex portion of 100 nm or more and less than 1 μm.

3. The method according to claim 1, wherein the thermosetting resin has a mold shrinkage ratio of 3.0% to 5.5%, and wherein the glasslike carbon has a minimum width dimension of the at least one surficial convex portion of 50 nm or more and less than 1 μm.

4. The method according to claim 1, wherein the mold is made from silicon.

5. The method according to claim 2, wherein the mold is made from silicon.

6. The method according to claim 3, wherein the mold is made from silicon.