Modified preceramic polymers, method of making and ceramic matrix composite formed therefrom

Patent metadata

Field	Value
Publication number	US-12024598-B2
Application number	US-202217840007-A
Country	US
Kind code	B2
Filing date	Jun 14, 2022
Priority date	Nov 22, 2019
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

Disclosed is a modified preceramic polymer having a polymer backbone consisting of silicon or a combination of silicon and carbon; and a pendant modifier bonded to the backbone wherein the modifier includes silicon, boron, aluminum, a transition metal, a refractory metal, or a combination thereof. The modified preceramic polymer can be used to form a ceramic matrix composite.

First claim

What is claimed is:

1. A ceramic matrix composite comprising:
reinforcing fibers and a matrix,
wherein the matrix comprises silicon carbide and metal carbide and
the metal carbide is homogeneously dispersed throughout the silicon carbide; and
wherein the reinforcing fibers include metal fibers, Si 3 N 4 fibers, SiOC fibers, Al 2 O 3 fibers, glass fibers, E-glass fibers, S2 glass fibers, aramid fibers, polyethylene fibers, or combinations thereof.

2. The ceramic matrix composite of claim 1 , further comprising a metal boride.

Assignees

• Rtx Corp

Inventors

• Schmidt Wayde R
• Sheedy Paul

Classifications

• C08G77/398

  containing boron or metal atoms · CPC title

• C04B2235/3826

  Silicon carbides · CPC title

• C04B2235/3804

  Borides · CPC title

• C04B35/571

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

• C04B35/5607

  based on refractory metal carbides · CPC title