Solvent assisted processing to control the mechanical properties of electrically and/or thermally conductive polymer composites
US9714370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2013 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Jan 4, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B1/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrically and/or thermally conductive polymer composites and methods of preparing same are provided. In some embodiments, a method for preparing an electrically and/or thermally conductive polymer composite may include (1) mixing a polymer, a conductive particulate filler, and a solvent to form a non-conductive polymer solution or melt; (2) processing, the non-conductive polymer solution or melt to form a non-conductive polymer network composition; wherein the presence of solvent during three-dimensional network formation manipulates the polymer network structure; and (3) removing the solvent from the non-conductive polymer network composition to form an electrically and/or thermally conductive polymer composite. The altered polymer chain structure present in the non-conductive polymer network composition is maintained in the composite, and offsets the impact of particulate filler addition including increased modulus, decreased elasticity, and decreased elongation at break. This method enables development of composite materials with electrical/thermal and mechanical performance that can be tailored independently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.