Multifunctional curing agents and their use in improving strength of composites containing carbon fibers embedded in polymeric matrix
US10240011B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | May 14, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2400/01
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A functionalized carbon fiber having covalently bound on its surface a sizing agent containing epoxy groups, at least some of which are engaged in covalent bonds with crosslinking molecules, wherein each of said crosslinking molecules possesses at least two epoxy-reactive groups and at least one free functional group reactive with functional groups of a polymer matrix in which the carbon fiber is to be incorporated, wherein at least a portion of said cros slinking molecules are engaged, via at least two of their epoxy-reactive groups, in crosslinking bonds between at least two epoxy groups of the sizing agent. Composites comprised of these functionalized carbon fibers embedded in a polymeric matrix are also described. Methods for producing the functionalized carbon fibers and composites thereof are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.