Densification of composite preforms by liquid resin infiltration assisted by rigid-barrier actinic gelation
US6465100B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1993 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Jun 15, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method to form a sealed, partially or fully densified fiber reinforced composite preform which comprises:impregnating said preform with a major portion of a liquid, ceramic-forming precursor;initiating cure of the outer surface of said precursor with radiation, such as actinic radiation;a thereby forming a sealing barrier or skin on the surface of said preform.In a second embodiment the preform is infiltrated with a thermoplastic as liquid, frozen, excess frozen infiltrate optionally removed from the preform surface, then the preform is coated with a liquid which is curable with radiation, cure is initiated with radiation and the preform is sealed with a barrier coat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.