Complex composite article having improved impact resistance
First Claim
1. A composite article of manufacture comprising:
- (a) fiber having a tensile modulus of at least about 160 g/denier and a tenacity of at least about 7 g/denier substantially coated with an elastomeric material which has a tensile modulus (measured at about 23°
C.) of less than about 6,000 psi (414 MPa); and
(b) at least one rigid material arranged with said coated fiber to form a rigid composite article.
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Accused Products
Abstract
The present invention provides an improved, complex composite article of manufacture which comprises a network of high strength fibers having a tensile modulus of at least about 160 grams/denier and a tenacity of at least about 7 g/denier. An elastomeric material substantially coats each of the individual fibers, and has a tensile modulus of less than about 6,000 psi, measured at 25° C. The coated fibers are provided with at least one additional rigid layer on a major surface of the coated fibers to produce a rigid complex composite. Composites of this construction have improved resistance to environmental hazards, improved impact resistance, and are unexpectedly effective as ballistic resistant articles such as armor plate or helmets.
146 Citations
36 Claims
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1. A composite article of manufacture comprising:
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(a) fiber having a tensile modulus of at least about 160 g/denier and a tenacity of at least about 7 g/denier substantially coated with an elastomeric material which has a tensile modulus (measured at about 23°
C.) of less than about 6,000 psi (414 MPa); and(b) at least one rigid material arranged with said coated fiber to form a rigid composite article. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 32, 34, 35)
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26. A ballistic resistant composite article of manufacture comprising:
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(a) fiber having a tensile modulus of at least about 200 g/denier and a tenacity of at least about 10 g/denier substantially coated with an elastomeric material which has a tensile modulus (measured at about 23°
C.) of less than about 6,000 psi (414 MPa); and(b) at least one rigid material arranged with said coated fiber to form a rigid composite article. - View Dependent Claims (27, 28, 29, 30, 31, 33)
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36. A complex composite comprising:
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(a) a simple composite comprising fibers having a modulus of at least about 500 g/denier and a tenacity of at least about 15 g/denier in an elastomeric matrix having a tensile modulus of less than about 6000 psi; and (b) a rigid material comprising a ceramic arranged adjacent said simple composite.
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Specification