High performance same fiber composite hybrids by varying resin content only
View Patent ↗Multi-panel ballistic resistant articles formed from woven and/or non-woven fibrous panels, each panel including varying quantities of a polymeric composition based on the total weight of the fibers and the polymeric composition. The hybrid structures provide excellent ballistic penetration resistance while maintaining a low weight. The ballistic resistant articles may be strategically positioned to dial in different levels of desired ballistic resistance for various applications.
1. A ballistic resistant article formed from a ballistic resistant material, the ballistic resistant material comprising:
a) a first panel comprising a plurality of fibrous layers, said plurality of fibrous layers being consolidated; each of the fibrous layers comprising a plurality of fibers, said fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; each of said fibers having a surface, and the surfaces of said fibers being coated with a polymeric composition; and
b) a second panel attached to the first panel, which second panel is different than the first panel, and which second panel comprises a plurality of fibrous layers, said plurality of fibrous layers being consolidated; each of the fibrous layers comprising a plurality of fibers, said fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; each of said fibers having a surface, and the surfaces of said fibers being coated with a polymeric composition; and
c) said first panel containing a greater percentage by weight of the polymeric composition in the first panel, based on the total weight of the first panel, than a percentage by weight of the polymeric composition in said second panel, based on the total weight of the second panel; and
d) at least one additional panel attached to the first panel, to the second panel, or to both the first panel and to the second panel, the at least one additional panel comprising a plurality of fibrous layers, said plurality of fibrous layers being consolidated; each of the fibrous layers comprising a plurality of fibers, said fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; each of said fibers having a surface, the surfaces of said fibers being coated with a polymeric composition,
and wherein the said second panel contains a greater percentage by weight of the polymeric composition, based on the total weight of the second panel, than a percentage by weight of the polymeric composition in said at least one additional panel, based on the total weight of the at least one additional panel.
2. A ballistic resistant material comprising, in order:
a) a first panel comprising a plurality of fibrous layers, said plurality of fibrous layers being consolidated; each of the fibrous layers comprising a plurality of fibers, said fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; each of said fibers having a surface, and the surfaces of said fibers being coated with a polymeric composition; and
b) a second panel attached to the first panel, which second panel is different than the first panel, and which second panel comprises a plurality of fibrous layers, said plurality of fibrous layers being consolidated; each of the fibrous layers comprising a plurality of fibers, said fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; each of said fibers having a surface, and the surfaces of said fibers being coated with a polymeric composition;
c) said first panel containing a greater percentage by weight of the polymeric composition in the first panel, based on the total weight of the first panel, than a percentage by weight of the polymeric composition in said second panel, based on the total weight of the second panel; and
d) one or more additional panels attached to said second panel, wherein at least one of said additional panels is formed from fibers that are not coated with a polymeric composition; wherein said one or more additional panels comprises a plurality of fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; wherein all of the panels are interconnected to form a series of interconnected ballistic resistant panels, and wherein each consecutive panel in the series contains a lower percentage by weight of the polymeric composition than the previous panel in the series to which it is connected, based on the total weight of each panel.
3. A ballistic resistant article formed from a ballistic resistant material, the ballistic resistant material comprising:
a) a first panel comprising a plurality of fibrous layers, said plurality of fibrous layers being consolidated; each of the fibrous layers comprising a plurality of fibers, said fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; each of said fibers having a surface, and the surfaces of said fibers being coated with a polymeric composition; and
b) a second panel attached to the first panel, which second panel is different than the first panel, and which second panel comprises a plurality of fibrous layers, said plurality of fibrous layers being consolidated; each of the fibrous layers comprising a plurality of fibers, said fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; each of said fibers having a surface, and the surfaces of said fibers being coated with a polymeric composition; and
c) said first panel containing a greater percentage by weight of the polymeric composition in the first panel, based on the total weight of the first panel, than a percentage by weight of the polymeric composition in said second panel, based on the total weight of the second panel; and
d) at least one additional panel attached to the first panel, to the second panel, or to both the first panel and to the second panel, the at least one additional panel comprising a plurality of fibrous layers, said plurality of fibrous layers being consolidated; each of the fibrous layers comprising a plurality of fibers, said fibers having a tenacity of 7 g/denier or more and a tensile modulus of 150 g/denier or more; each of said fibers having a surface, and the surfaces of said fibers optionally being coated with a polymeric composition, and wherein the article comprises:
a) a series of four interconnected panels, the panels having respective polymeric composition quantities, in order, of 20%, 15%, 10% and 7% by weight of the combined weight of its fibers and polymeric composition; or
b) a series of three interconnected panels, the panels having respective polymeric composition quantities, in order, of 20%, 10% and 0% by weight of the combined weight of its fibers and polymeric composition.