Boron powder stabilizes char, so burned substances are shiny, smooth, and free of loose graphite fibers. Resin weight loss of laminates during burning in air is identical for the first three minutes for unfilled and boron-filled samples, then boron samples stabilize.
Resin char oxidation retardant for composites
NASA Tech Briefs ; 5 , 3
1981-01-01
Miscellaneous
No indication
English
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