Ballistic resistant article with thermoset polyurethane matrix
A ballistic resistant article includes a first layer that has first unidirectional fibers disposed in a first polymer matrix. The first polymer matrix is composed of a thermoset polyurethane. A second layer is laminated to the first layer. The second layer includes second unidirectional fibers disposed in a second polymer matrix. The second unidirectional fibers are cross-oriented with respect to the first unidirectional fibers.
1. A ballistic resistant article comprising:
a first layer including first unidirectional fibers disposed in a first polymer matrix, the first polymer matrix being composed of a thermoset polyurethane derived from cycloaliphatic isocyanate and polyether polyol, wherein the polyether polyol is polytetramethylene ether glycol (PTMEG) and the thermoset polyurethane is 4,4′-dicyclohexylmethane diisocyanate (H12MDI); and
a second layer laminated to the first layer, the second layer including second unidirectional fibers disposed in a second polymer matrix, the second unidirectional fibers being cross-oriented with respect to the first unidirectional fibers.
2. The ballistic resistant article as recited in claim 1 , wherein the thermoset polyurethane includes a blocking agent selected from the group consisting of alcohol, caprolactam, phenol, oxime, pyrazole, malonate, and combinations thereof.
3. The ballistic resistant article as recited in claim 1 , wherein the first unidirectional fibers and the second unidirectional fibers include polyolefin fibers or aramid fibers.
4. The ballistic resistant article as recited in claim 1 , wherein the first layer is in contact with, and coextensive with, the second layer.
5. A ballistic resistant article comprising:
a first layer including first unidirectional fibers disposed in a first polymer matrix, the first polymer matrix being composed of a thermoset polyurethane derived from cycloaliphatic isocyanate and polyether polyol, wherein the polyether polyol is polytetramethylene ether glycol (PTMEG) and the isocyanate is isophorone diisocyanate (IPDI); and
a second layer laminated to the first layer, the second layer including second unidirectional fibers disposed in a second polymer matrix, the second unidirectional fibers being cross-oriented with respect to the first unidirectional fibers.
6. The ballistic resistant article as recited in claim 5 , wherein the thermoset polyurethane is further derived from a blocking agent that caps the isocyanate, and the blocking agent includes oxime.
7. The ballistic resistant article as recited in claim 5 , wherein the thermoset polyurethane is further derived from a blocking agent that caps the isocyanate, and the blocking agent includes pyrazole.
8. The ballistic resistant article as recited in claim 5 , wherein the thermoset polyurethane is further derived from a blocking agent that caps the isocyanate, and the blocking agent includes malonate.
9. A ballistic resistant article comprising:
a first layer including first unidirectional fibers disposed in a first polymer matrix, the first polymer matrix being composed of a thermoset polyurethane derived from cycloaliphatic isocyanate and polyether polyol, wherein the polyether polyol is polytetramethylene ether glycol (PTMEG) and the isocyanate is tolulene 2,4diisocyanate (TDI); and
a second layer laminated to the first layer, the second layer including second unidirectional fibers disposed in a second polymer matrix, the second unidirectional fibers being cross-oriented with respect to the first unidirectional fibers.
10. The ballistic resistant article as recited in claim 9 , wherein the thermoset polyurethane is further derived from a blocking agent that caps the isocyanate, and the blocking agent includes oxime.
11. The ballistic resistant article as recited in claim 9 , wherein the thermoset polyurethane is further derived from a blocking agent that caps the isocyanate, and the blocking agent includes pyrazole.
12. The ballistic resistant article as recited in claim 9 , wherein the thermoset polyurethane is further derived from a blocking agent that caps the isocyanate, and the blocking agent includes malonate.
13. A ballistic resistant article comprising:
a first layer including first unidirectional fibers disposed in a first polymer matrix, the first polymer matrix being composed of a thermoset polyurethane derived from cycloaliphatic isocyanate, polyether polyol, and a blocking agent that caps the isocyanate, and the blocking agent selected from the group consisting of oxime, pyrazole, malonate, and combinations thereof; and
a second layer laminated to the first layer, the second layer including second unidirectional fibers disposed in a second polymer matrix, the second unidirectional fibers being cross-oriented with respect to the first unidirectional fibers.