Inventors:
Subhotosh Khan - Midlothian VA, US
Halvar Young Loken - Roseland VA, US
Assignee:
E. I. du Pont de Nemours and Company - Wilmington DE
International Classification:
B32B 3/12, B32B 23/02, B32B 27/04, C08K 7/02, C08L 63/00, C08L 63/02
US Classification:
428116, 428118, 428394, 428395, 428396, 523448, 525 58, 525107, 525113, 525114, 525118, 525120, 525121, 525423, 525438, 525454, 525480, 525502, 525504, 525508, 525523, 525524, 525526
Abstract:
A prepreg composite material that includes a fiber layer and a resin comprising a thermoset resin component, a curing agent and a fibrous micropulp. The micropulp component is an aramid fiber having a volume average length of from 0. 01 to 100 micrometers. The prepreg is useful in composite panel construction for minimizing fluid permeation into the cured structure. This prepreg is particularly suitable for making honeycomb sandwich panels. Film adhesives, liquid and paste resins containing aramid fiber micropulp are also disclosed.