Methods of exfoliating and dispersing a graphitic material into polymer matrices using supercritical fluids
US11603448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Feb 10, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Embodiments described herein relate generally to systems and methods for manufacturing a master batch with a graphitic material dispersed in a polymer matrix. In some embodiments, a method for manufacturing the master batch can include combining the graphitic material with a polymer, adding a supercritical fluid to the mixture, and depressurizing the supercritical fluid to remove the supercritical fluid. In some embodiments, the method includes mixing the graphitic material and the polymer for a first time period to form a first mixture and transferring the supercritical fluid to the first mixture to form a second mixture. In some embodiments, the method includes mixing the second mixture for a second time period and depressurizing the second mixture to allow the supercritical fluid to transition to a gas phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.