초록 ▼

A light-weight and impact-resistant composite material formed from a three-dimensional textile structure preform comprising at least three systems of yarns that define a plurality of interstices within the textile structure. A cellular matrix material impregnates the textile structure so as to fill

A light-weight and impact-resistant composite material formed from a three-dimensional textile structure preform comprising at least three systems of yarns that define a plurality of interstices within the textile structure. A cellular matrix material impregnates the textile structure so as to fill the interstices of the three-dimensional textile structure and to coat at least a portion of the surface area thereof.

대표청구항 ▼

1. A lightweight and impact resistant composite material comprising: (a) a substantially non-compressible uni-layer three-dimensional textile structure preform formed of at least three mutually perpendicular systems of yarns that define a plurality of interstices within said textile structure; an

1. A lightweight and impact resistant composite material comprising: (a) a substantially non-compressible uni-layer three-dimensional textile structure preform formed of at least three mutually perpendicular systems of yarns that define a plurality of interstices within said textile structure; and (b) a cellular matrix material that substantially fills the interstices of said three-dimensional textile structure and serves to create voids therein. 2. The lightweight and impact resistant composite material according to claim 1, wherein said three-dimensional textile structure preform is a three-dimensional fabric. 3. The lightweight and impact resistant composite material according to claim 2, wherein the three-dimensional fabric comprises three orthogonally woven yarn systems. 4. The lightweight and impact resistant composite material according to claim 2, wherein the three-dimensional fabric comprises a plurality of braided yarn systems. 5. The lightweight and impact resistant composite material according to claim 2, wherein the three-dimensional fabric comprises a plurality of circular woven yarn systems. 6. The lightweight and impact resistant composite material according to claim 2, wherein the three-dimensional fabric comprises a plurality of biaxial weft knit yarn systems. 7. The lightweight and impact resistant composite material according to claim 1, wherein said cellular matrix material comprises a polymer. 8. The lightweight and impact resistant composite material according to claim 7, wherein said polymer comprises an epoxy resin. 9. The lightweight and impact resistant composite material according to claim 8, wherein said epoxy resin comprises a thermosetting epoxy resin. 10. The lightweight and impact resistant composite material according to claim 1, wherein the cellular matrix material comprises bubbles defining a void diameter of at least about 0.01 to 10.0 μm. 11. The lightweight and impact resistant composite material according to claim 1, wherein the composite material has a specific density of about 0.88 to 1.02 grams/cm3.