Heat-dissipating ceramic foam containing carbonized cellulose particles and method for producing the same

Patent metadata

Field	Value
Publication number	US-2018282232-A1
Application number	US-201615764057-A
Country	US
Kind code	A1
Filing date	Mar 29, 2016
Priority date	Nov 10, 2015
Publication date	Oct 4, 2018
Grant date	—

Abstract

The present disclosure provides a method for producing a heat-dissipating ceramic foam containing carbonized cellulose particles, the method including: mixing particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powders, silicate, and water to form slurry; adding a foaming agent to the slurry to form foamed slurry; and drying the foamed slurry.

First claim

What is claimed is:

1 . A method for producing a heat-dissipating ceramic foam containing carbonized cellulose particles, the method comprising:
mixing particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powders, silicate, and water to form slurry; adding a foaming agent to the slurry to form foamed slurry; and drying the foamed slurry.

2 . The method of claim 1 , wherein the particles of the carbonized cellulose or carbonized cellulose-containing substance include coffee grounds.

3 . The method of claim 1 , wherein the ceramic powder includes at least one selected from a group consisting of elvan, ocher stone, olivine, kaolin, silica mineral, diatomite, wollastonite, pyrophyllite, dolomite, lithium minerals, magnesite, bauxite, bentonite, pumice, borate, serpentine, acid clay, iron oxide, garnet, carbonate minerals, attapulgite, sepiolite, nephrite, apatite, illite-mica, feldspar, perlite, vermiculite, zeolite, barite, talc, diatomaceous earth, graphite, hectorite, clay minerals, zirconium minerals, titanium minerals, tourmaine, fume silica, aerogel, fly ash, and blast furnace slag.

4 . The method of claim 1 , wherein the silicate includes at least one selected from a group consisting of sodium silicate, powdered sodium silicate, potassium silicate, lithium silicate, and sodium alumino-silicate.

5 . The method of claim 1 , wherein the foaming agent includes calcium carbonate, sodium bicarbonate, or hydrogen peroxide.

6 . The method of claim 1 , wherein mixing the particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powder, silicate, and water includes mixing the particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powder, silicate, water, and metal powders, wherein the metal powders include at least one selected from a group consisting of Au, Ag, Zn, Al, Fe, Mg and Sn.

7 . The method of claim 1 , wherein mixing the particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powder, silicate, and water includes mixing the particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powder, silicate, water, and activated carbons.

8 . A heat-dissipating ceramic foam comprising particles of carbonized cellulose or carbonized cellulose-containing substance.

9 . The foam of claim 8 , wherein the particles of the carbonized cellulose or carbonized cellulose-containing substance includes coffee grounds.

10 . The foam of claim 8 , further comprising metal powders, wherein the metal powders include at least one selected from a group of Au, Ag, Zn, Al, Fe, Mg and Sn.

11 . The foam of claim 8 , further comprising activated carbons.

Assignees

• Nat Univ Pukyong Ind Univ Coop Found
• Nat Univ Pukyong Ind Univ Coop Found

Inventors

• Yang Hyun Kyoung
• Lee Joo Hyun

Classifications

• C04B35/14

  based on silica · CPC title

• C04B18/248

  from specific plants, e.g. hemp fibres · CPC title

• C09K5/14

  Solid materials, e.g. powdery or granular · CPC title

• C04B33/135

  Combustion residues, e.g. fly ash, incineration waste · CPC title

• C04B28/26

  Silicates of the alkali metals · CPC title