US 11,884,794 B2
Pourable polyurethane foam with energy attenuating properties
Suvankar Mishra, Carrollton, TX (US)
Assigned to Textron Innovations Inc., Providence, RI (US)
Filed by Bell Textron Inc., Fort Worth, TX (US)
Filed on Oct. 12, 2020, as Appl. No. 17/068,078.
Prior Publication US 2022/0112354 A1, Apr. 14, 2022
Int. Cl. C08K 3/30 (2006.01); B64C 7/00 (2006.01); C08J 9/02 (2006.01); C08G 18/76 (2006.01); C08G 18/08 (2006.01); C08G 18/40 (2006.01); C08G 101/00 (2006.01)
CPC C08K 3/30 (2013.01) [B64C 7/00 (2013.01); C08G 18/14 (2013.01); C08G 18/40 (2013.01); C08G 18/7685 (2013.01); C08J 9/02 (2013.01); C08G 2101/00 (2013.01); C08J 2375/04 (2013.01); C08K 2003/3045 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A component, comprising:
a composite structure disposed between an upper skin and a lower skin;
a void region between the upper skin and the lower skin; and
an energy attenuating foam substantially filling the void region, the energy attenuating foam comprising a first resin component, a second resin component, and a barium sulfate component, wherein energy attenuating properties of the foam are controlled by a proportion of the barium sulfate component in the foam selected to create a foam cell size in the range of 0.006 to 0.017 inches.