Preceramic ionic systems

Patent metadata

Field	Value
Publication number	US-11873258-B2
Application number	US-202117384080-A
Country	US
Kind code	B2
Filing date	Jul 23, 2021
Priority date	May 29, 2015
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

A process of forming a Si-containing ceramic comprises forming a Si-based polymeric composition. The process includes neutralizing a charge of said Si-based polymeric composition. The process includes adding thermal energy under a controlled atmosphere to the Si-based polymeric composition. A turbine engine component comprises an airfoil and the airfoil comprises a Ceramic Matrix Composite (CMC) material.

First claim

What is claimed is:

1. A process for manufacturing a composite system comprising:
forming a Si-based polymeric composition;
functionalizing said Si-based polymeric composition through covalent bond formation with an ionizable side group;
neutralizing a charge of said Si-based polymeric composition by the addition of counterions to said Si-based polymeric composition including use of monomeric or polymeric species containing an opposite charge to that of the Si-based polymeric composition; and
adding thermal energy to said Si-based polymeric composition and ionizable side group.

2. The process of claim 1 , wherein said Si-based polymeric composition is selected from the group consisting of polymeric polysilanes, polysilazanes, polysiloxanes, polycarbosiloxanes and polycarbosilanes.

3. The process of claim 1 , wherein said polymeric composition can comprise at least one of a mono-polymer, bi-polymer, multi-functional-polymer, hyperbranched polymer, polymer brushes and dendrimer molecules.

4. The process of claim 1 , wherein said ionizable side group comprises hydrogel components.

5. The process of claim 4 , wherein said hydrogel components comprise at least one of polyethylene glycol, polyethylenoxide, polyacrylamine, polyacrylic acid, and polymethacrylic acid.

6. The process of claim 1 , further comprising:
incorporating an organic functional group onto a backbone of said Si-based polymeric composition through covalent bond formation between the functional group and the backbone.

7. The process of claim 6 , wherein said organic functional group is selected from the group consisting of hydroxyl, carbonyl, aldehyde, carboxyl, ether, ester, carboxamide and amine.

Assignees

• Raytheon Tech Corp
• Rtx Corp

Inventors

• Schmidt Wayde R

Classifications

• C04B35/571 Primary

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

• C04B35/515

  based on non-oxide ceramics · CPC title

• C04B35/80

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

• C08G77/26

  nitrogen-containing groups · CPC title

• C08G77/50

  by carbon linkages · CPC title