Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1997-11-06
2000-05-30
Copenheaver, Blaine
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283139, 4283166, 4283179, 4283186, 442223, 442226, 523218, 521919, B32B 528, C08J 932
Patent
active
060689153
ABSTRACT:
A low-density, syntactic foam material is provided according to the invention. The syntactic foam material is prepared by mixing together a plurality of microballoons and a finely divided solid thermosetting resin. Fibers are also preferably incorporated into the material during processing to impart specific properties. The mixture is heated to allow the thermosetting resin to flow and wet the microballoons in the mixture. The mixture is then cured to set and crosslink the thermosetting resin to form the syntactic foam of the invention. The syntactic foam material has highly uniform properties and can be used in aerospace applications.
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Bridges Donald J.
Harrison Edward S.
Melquist James L.
Copenheaver Blaine
McDonnell Douglas Corporation
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