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"NASA Technical Reports Server (NTRS) 19810022745: Fillers For Improved Graphite Fiber Retention By Polymer Matrix Composites" and the language of the book is English.


“NASA Technical Reports Server (NTRS) 19810022745: Fillers For Improved Graphite Fiber Retention By Polymer Matrix Composites” Metadata:

  • Title: ➤  NASA Technical Reports Server (NTRS) 19810022745: Fillers For Improved Graphite Fiber Retention By Polymer Matrix Composites
  • Author: ➤  
  • Language: English

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  • Internet Archive ID: NASA_NTRS_Archive_19810022745

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"NASA Technical Reports Server (NTRS) 19810022745: Fillers For Improved Graphite Fiber Retention By Polymer Matrix Composites" Description:

The Internet Archive:

The results of a program designed to determine the extent to which elemental boron and boron containing fillers added to the matrix resin of graphite/epoxy composites prevent the release of graphite fibers when the composites are exposed to fire and impact conditions are described. The fillers evaluated were boron, boron carbide and aluminum boride. 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 structure. It also was found that the addition of boron and boron containing fillers to the resin matrix eliminated this fiber release. Mechanical properties of laminates containing the boron and boron containing fillers were lower than those of the baseline laminates. These property degradations for two systems: boron (5 micron) at 2.5 percent filler loading, and boron (5 micron) at 5.0 percent filler loading do not appear severe enough to preclude their use in structural composite applications.

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  • Internet Archive Link: Archive.org page
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  • Added Date: 2016-08-13 19:13:44
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