Production method for glassy carbon mold

Patent metadata

Field	Value
Publication number	US-10144155-B2
Application number	US-201314375155-A
Country	US
Kind code	B2
Filing date	Jan 30, 2013
Priority date	Jan 30, 2012
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

The present invention relates to a production method for a glassy carbon mold, and, more specifically, relates to a production method for a glassy carbon mold including the steps of: placing a mixture having a thermosetting resin, a curing agent, and a viscosity adjusting solvent between a thermosetting resin substrate and a master pattern formed by a micro-nano process; pressing either the master pattern or the thermosetting resin substrate and applying heat to form a cured thermosetting resin pattern part on the substrate; and removing the master pattern, and subjecting the substrate and the cured thermosetting resin pattern.

First claim

The invention claimed is:

1. A method for producing a glassy carbon mold, the method comprising: preparing a substrate formed of thermosetting resin, the preparing of the substrate comprises: curing a mixture comprising a thermosetting resin, a curing agent and a viscosity-controlling solvent, and polishing the cured mixture to prepare the substrate; preparing a master pattern having a micro/nano structure; disposing a mixture comprising a thermosetting resin, a curing agent and a viscosity-controlling solvent on the master pattern and then disposing the substrate on the mixture; pressing the substrate toward the master pattern and curing the mixture to form a pattern portion formed of thermosetting resin on the substrate; detaching the master pattern; and carbonizing the substrate and the pattern portion to produce the glassy carbon mold, wherein the thermosetting resin of the substrate and the thermosetting resin of the pattern portion are formed of the same material of the thermosetting resin, the thermosetting resin is either furan resin or furfuryl alcohol, and the mixture for preparing the substrate is the same as the mixture for preparing the pattern portion.

2. The method according to claim 1 , wherein the thermosetting resin of the substrate undergoes the same contraction during the carbonization as the thermosetting resin of the pattern portion.

3. The method according to claim 1 , wherein the thermosetting resin of the pattern portion is selected from the group consisting of a furan resin, a phenol resin, and a polycarbodiimide resin.

4. The method according to claim 1 , wherein the curing of the mixture is carried out by heating at 60 to 150° C. for 30 minutes to 3 hours.

5. The method according to claim 4 , wherein the curing of the mixture further comprises another curing performed by heating at 70 to 200° C.

6. A method for forming a fine glass pattern comprising:
disposing the glassy carbon mold produced by the method according to claim 1 on a glass substrate;
thermally treating the glassy carbon mold and the glass substrate at a glass transition temperature or higher of the glass substrate;
pressing the thermally treated glassy carbon mold and the thermally treated glass substrate to transfer a pattern of the glassy carbon mold to the glass substrate;
cooling the glass substrate having the pattern transferred from the glassy carbon mold; and
detaching the glass substrate from the glassy carbon mold.

7. A method for forming a fine metal pattern comprising:
disposing the glassy carbon mold produced by the method according to claim 1 on a metal substrate;
thermally treating the glassy carbon mold and the metal substrate at a decrystallization temperature or higher of the metal;
pressing the thermally treated glassy carbon mold and metal substrate to transfer a pattern of the glassy carbon mold to the metal substrate;
cooling the metal substrate having the pattern transferred from the glassy carbon mold; and
detaching the metal substrate from the glassy carbon mold.

8. The method according to claim 1 , wherein the thermosetting resin is furan resin.

9. The method according to claim 1 , wherein the thermosetting resin is furfuryl alcohol.

10. The method according to claim 1 , wherein the curing agent comprises p-toluenesulfonic acid monohydrate, or citric acid.

11. The method according to claim 1 , wherein the curing agent comprises sodium hydroxide, potassium hydroxide, ammonia, or amines.

12. The method according to claim 1 , wherein the curing agent is present in an amount of 0.1 parts by weight to 0.6 parts by weight, with respect to 100 parts by weight of the mixture.

13. The method according to claim 1 , wherein the viscosity-controlling solvent comprises alcohol, a ketone, or an aromatic solvent.

14. The method according to claim 1 , wherein the master pattern is formed by a nano process and has a pattern having at least one of a line grating, a rectangular or hexagonal dot pattern, a chess pattern, a depressed lens pattern, a depressed lenticular lens pattern, a depressed Fresnel lens pattern, and a depressed micro-channel pattern.

Assignees

• Univ Chung Ang Ind Acad Coop Found

Inventors

• Kim Seok Min
• Seok Jong Won
• Kim Tae Hyoung
• Ju Jong Hyun

Classifications

• B41G7/00

  Auxiliary perforating apparatus associated with printing devices (apparatus or machines for carrying-out printing operations combined with operations other than perforating B41F19/00) · CPC title

• G02C11/08

  Anti-misting means, e.g. ventilating, heating (H05B3/84 takes precedence); Wipers · CPC title

• B41F17/38 Primary

  for printing on knitted fabrics · CPC title

• B41F15/12

  with auxiliary equipment, e.g. for drying printed articles · CPC title

• B41F15/14

  Details · CPC title