Complex composite article having improved impact resistance

Details Complex composite article having improved impact resistance Complex composite article having improved impact resistance

1985-02-28

1986-09-23

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

2 25, 428224, 428246, 428252, 428284, 428286, 428289, 428295, 428364, 428365, 428378, 428382, 428392, 428395, 428902, 428911, B32B 512

Patent

active

046135359

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 matrix material substantially coats each of the individual fibers, and has a tensile modulus of less than about 6,000 psi, measured at 25.degree. C. The fibers in the matrix are provided with at least one additional rigid layer on a major surface of the fibers in the matrix 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 or helmets.

REFERENCES:
patent: 4403012 (1983-09-01), Harpell et al.
patent: 4413110 (1983-11-01), Kavesh et al.
patent: 4428998 (1984-01-01), Hawkinson
patent: 4457985 (1984-07-01), Harpell et al.
"The Effect of Resin Concentration and Laminating Pressures on KEVLAR Fabric Bonded with Modified Phenolic Resin," Technical Report WATICK/TR- 84-030 Jun. 8, 1984.

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