Patent · US Active

Method for recovering carbon fibers from composite material waste

US11319489B2 · kind B2 · utility

3Cited by

2References

20Claims

0Family size

Assignee

The Boeing Company · US

Inventors

Gang Sui · Beijing, CN
Xiaoping Yang · Streetsboro, US
Xin Jin · Beijing, CN
Zhu Ming · Beijing, CN
Zhandong Wang · Nanhu, CN

Key dates

Filing date	Mar 30, 2018
Grant date	May 3, 2022
Priority date	—
Expiry date	Feb 22, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/143
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method for recovering carbon fibers from composite material waste includes coating a solid acid powder onto a surface of a composite material waste having carbon fibers and a resin matrix, pyrolyzing the resin matrix of the coated composite material waste in an inert environment, and oxidizing the pyrolyzed resin of the composite material waste in an air environment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.