Covalent conjugates of graphene nanoparticles and polymer chains and composite materials formed therefrom
US11479652B2 · kind B2 · utility
2Cited by
19References
19Claims
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Key dates
| Filing date | Oct 8, 2019 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Dec 21, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/011
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for forming a graphene-reinforced polymer matrix composite is disclosed. The method includes distributing graphite microparticles into a molten thermoplastic polymer phase; and applying a succession of shear strain events to the molten polymer phase so that the molten polymer phase exfoliates the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along the c-axis direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.