Method of consolidating thermoplastic poly(amide-imide) components
US4765942A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1986 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Sep 30, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2079/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of consolidating fiber reinforced thermoplastic poly(amide-imide) components is disclosed that is suitable for use in fabricating large parts such as aircraft wing skins and the like. The method includes enclosing the part in a vacuum bag and placing the part in the bag in an autoclave. The method includes elevating the temperatures of the part to that where volatile solvent is substantially evaporated. Temperature of the part is then further increased until resin viscosity is reduced to a minimum. A pressure differential on the order of at least 150 psig is then applied at a high rate acting upon the article, causing the resin to flow to consolidate the part, resulting in a void-free composite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.