Fiber-containing prepregs and methods and systems of making
US9186852B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | May 22, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2377/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods of making a fiber-containing prepregs may include drawing unsized fibers from a batch of molten glass. The method may also include applying a sizing composition to the unsized fibers to form a plurality of sized fibers, where the sizing composition includes a first polymerization agent for polymerizing caprolactam. The method may further include weaving the plurality of sized fibers into a fabric. Another step may include melting a reactive resin composition to form a melted reactive resin composition, where the reactive resin composition may include caprolactam. The melted reactive resin composition may be applied to the fabric. The method may further include heating the fabric and the melted reactive resin composition to a polymerization temperature, where the caprolactam polymerizes to form a fiber-resin amalgam including a polyamide. Another step may be to form the fiber-resin amalgam into the fiber-containing prepreg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.