Fillers for Improved Graphite Fiber Retention by Polymer Matrix Composites.
Abstract
This report describes the results of a program to determine the extent to which the addition of elemental boron and boron-containing fillers to the matrix resin prevented the release of graphite fibers from resin matrix composites exposed to fire and impact conditions. The conditions evaluated were laboratory simulations of those that could exist in the event of an aircraft crash and burn situation. The baseline (i.e., unfilled) laminates evaluated were prepared from commercially available graphite/ epoxy. The baseline and filled laminates' mechanical properties, before and after isothermal and humidity aging, also were compared. It was found that a small amount of graphite fiber was released from the baseline graphite/epoxy laminates during the burn and impact conditions used in this program. However, the extent to which the fibers were released is not considered a severe enough problem to preclude the use of graphite-reinforced composites in civil aircraft structures. It also was found that the boron and boron-containing filler concepts eliminated this fiber release. Isothermal and humidity aging did not appear to alter the fiber release tendencies. jg p.10
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 23, 1981
- Accession Number
- ADA302561
Entities
People
- C. H. Sheppard
- E. E. House
Organizations
- Boeing