Method of densifying a ceramic matrix composite using a filled tackifier

Patent metadata

Field	Value
Publication number	US-10829418-B2
Application number	US-201715823016-A
Country	US
Kind code	B2
Filing date	Nov 27, 2017
Priority date	Nov 27, 2017
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A method of producing an enhanced ceramic matrix composite includes applying a tackifier compound to a fiber preform. The tackifier compound includes inorganic filler particles. The method further includes modifying the tackifier compound such that the inorganic filler particles remain interspersed throughout the fiber preform, and occupy pores of fiber preform.

First claim

The invention claimed is:

1. A method of producing a ceramic matrix composite, the method comprising:
applying a tackifier compound to a fiber preform, the tackifier compound comprising:
a solvent;
a resin; and
ceramic filler particles; and

pyrolyzing the tackifier compound such that the solvent and the resin are burned off leaving only the ceramic filler particles interspersed throughout the fiber preform and occupying pores of the fiber preform.

2. The method of claim 1 and further comprising: coating the fiber preform with an interface coating using a chemical vapor infiltration or chemical vapor deposition process.

3. The method of claim 1 and further comprising: forming a matrix surrounding the fiber preform using a chemical vapor infiltration or chemical vapor deposition process.

4. The method of claim 3 and further comprising: applying a thermal barrier coating or an environmental barrier coating to the ceramic matrix composite.

5. The method of claim 1 , wherein the solvent comprises water, acetone, ethanol, isopropanol, or toluene.

6. The method of claim 1 , wherein the resin comprises polyvinyl-alcohol, a polymer of vinyl styrene, or polyacrylate.

7. The method of claim 1 , wherein applying the tackifier compound comprises a technique selected from the group consisting of spraying, painting, filming, dip-coating, and combinations thereof.

8. The method of claim 1 , wherein the ceramic filler particles are formed from a material selected from the group consisting of silicon carbide, silicon nitride, pure silicon, boron carbide, pure carbon, aluminum oxide, hafnia, and combinations thereof.

9. The method of claim 1 , wherein the ceramic filler particles comprise spherical particles, elongated particles, and combinations thereof.

10. The method of claim 1 , wherein a diameter of the ceramic filler particles ranges from 0.1 micrometer to 500 micrometers.

11. The method of claim 1 , wherein an aspect ratio of the ceramic filler particles ranges from 1 to 100.

Assignees

• United Technologies Corp

Inventors

• Jackson R Wesley
• Read Kathryn S
• Hart Jeremy R
• Lazur Andrew J

Classifications

• C04B35/589 Primary

  obtained from {Si-containing} polymer precursors {or organosilicon monomers} · CPC title

• C04B35/571

  obtained from {Si-containing} polymer precursors {or organosilicon monomers} · CPC title

• C04B35/80 Primary

  Fibres, filaments, whiskers, platelets, or the like · CPC title

• C04B35/532

  containing a carbonisable binder · CPC title

• C04B2235/48

  Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins · CPC title