Yijia Ma Phones & Addresses
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Ontario, CA
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Rowland Heights, CA
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455 Ardilla Ave, La Puente, CA 91746 (626) 968-1887
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Rowland Heights, CA
Work
Education
School / High School:
Los Angeles Trade Technical College- Los Angeles, CA
Specialities:
Associate in Fashion Design
Publications
Us Patents
Recovery And Reuse Of Acid Digested Amine/Epoxy-Based Composite Matrices
View pageUS Patent:
20220363863, Nov 17, 2022
Filed:
Sep 18, 2020
Appl. No.:
17/761856
Inventors:
- Los Angeles CA, US
Steven NUTT - Los Angeles CA, US
Yijia MA - Los Angeles CA, US
Carlos NAVARRO - Los Angeles CA, US
Steven NUTT - Los Angeles CA, US
Yijia MA - Los Angeles CA, US
Carlos NAVARRO - Los Angeles CA, US
Assignee:
UNIVERSITY OF SOUTHERN CALIFORNIA - Los Angeles CA
International Classification:
C08J 11/26
C08J 11/16
C08G 59/40
C08G 59/50
C08G 59/20
C08J 11/16
C08G 59/40
C08G 59/50
C08G 59/20
Abstract:
A method for recycling matrix residues includes steps of degrading a target epoxy to form matrix residues, collecting the matrix residues, and adding the matrix residues into a polymer-forming formulation. Characteristically, the polymer-forming formulation includes multifunctional anhydride monomers and polyfunctional co-reactant monomers.
Aerobic Depolymerization Of Fiber-Reinforced Composites
View pageUS Patent:
20190203013, Jul 4, 2019
Filed:
Dec 27, 2018
Appl. No.:
16/234062
Inventors:
- Los Angeles CA, US
STEVEN NUTT - IRVINE CA, US
YIJIA MA - LOS ANGELES CA, US
CARLOS NAVARRO - LOS ANGELES CA, US
STEVEN NUTT - IRVINE CA, US
YIJIA MA - LOS ANGELES CA, US
CARLOS NAVARRO - LOS ANGELES CA, US
International Classification:
C08J 11/28
C01B 32/05
B01J 31/22
D01F 9/12
C01B 32/05
B01J 31/22
D01F 9/12
Abstract:
A method of aerobic depolymerization of fiber-reinforced polymer (FRP) composites using sustainable reagents and conditions. A cured matrix is digested into soluble monomers and oligomers by catalytic aerobic oxidation. Carbon fibers are removed for re-use, then the remaining material is treated and valuable monomers are isolated. The isolated monomers can be converted back into resin precursors for re-use. The method solves the problem created because the typically irreversible cure reaction impedes recycling and re-use of FRP composites.