Structured thermoplastic in composite interleaves
US10618227B2 · kind B2 · utility
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16References
7Claims
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Key dates
| Filing date | Aug 22, 2018 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Oct 16, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J5/243
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
One or more layers of structured thermoplastic polymer are located within the interleaf zones of a preform or prepreg. The structured thermoplastic polymer is a film or membrane formed by: a) dissolving polyethersulfone or polyetherimide in a solvent to form a polymer dope; b) dispersing a curing agent for an epoxy resin in the polymer dope to form a curative-enriched polymer dope; c) casting the curative-enriched polymer dope onto a surface to form a dope layer; and d) removing the solvent from the dope layer to form a layer of structured thermoplastic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.