Material for the manufacture for ballistic shielding
A ballistic shielding material element is provided formed of molecularly oriented layers of material, such a polyethylene or HDPE that is modified using the application of continuous mechanical tension in combination with alternating heating and cooling cycles. The molecularly oriented planar material may then be used in the creation of ballistic resistant material panels through bias lay-up of subsequent layers. Further, the final multilayer composite may be additionally cured to form a final shape, such as a sheet material for construction or three dimensional shapes such as helmets, shields or custom shapes as needed by the end user. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
1. A composite anti-ballistic material comprising:
a first layer of modified polyethylene material;
at least one second layer of modified polyethylene material; and
at least a third layer of carbon nanotubes between said first layer and said at least one second layer;
wherein each said modified polyethylene material comprises a molecularly oriented material and each said first layer is biased oriented relative to each said adjacent second layer.
2. The composite anti-ballistic material of claim 1 , wherein said molecularly oriented material is oriented by providing mechanical tension during alternate cycling of heating and cooling of such modified polyethylene material.
3. The composite anti-ballistic material of claim 2 , wherein said heating cycle comprises the heating of said modified polyethylene material to a point above a midpoint between a melting point and a freezing point.
4. The composite anti-ballistic material of claim 3 , wherein said heating cycle comprises raising a temperature of the modified polyethylene material to approximately about 192° F.
5. The composite anti-ballistic material of claim 2 , wherein said cooling cycle comprises the cooling of said modified polyethylene material to a temperature at or below a freezing point of said modified polyethylene material.
6. The composite anti-ballistic material of claim 5 , wherein said temperature is approximately about 32° F.
7. The composite anti-ballistic material of claim 1 , wherein said at least a third layer is at least approximately 1 mm in average thickness.
8. The composite anti-ballistic material of claim 1 , further comprising at least a fourth layer of magneto rheological fluid between said first layer and said at least one second layer.
9. The composite anti-ballistic material of claim 1 , further comprising at least a fourth layer of flame retardants between said first layer and said at least one second layer.
10. A composite anti-ballistic material comprising:
a first layer of polyethylene materials modified having a common molecular orientation biased along a first direction;
a second layer of polyethylene materials modified having a common molecular orientation biased along a first direction;
said second layer of polyethylene materials modified having a common molecular orientation biased along a second direction;
at least a third layer of carbon nanotubes between said first layer and second layer; and
each said first layer being oriented relative to each said second layer such that said first direction is biased relative to said second direction.
11. The composite anti-ballistic material of claim 10 , wherein said polyethylene materials are modified having a common molecular orientation biased by providing mechanical tension during alternate cycling of heating and cooling.
12. The composite anti-ballistic material of claim 11 , wherein said heating cycle comprises a heating of said modified polyethylene material to a point above a midpoint between a melting point and a freezing point.
13. The composite anti-ballistic material of claim 11 wherein said heating cycle comprises raising a temperature of the modified polyethylene material to approximately about 192° F.
14. The composite anti-ballistic material of claim 11 , wherein said cooling cycle comprises the cooling of said modified polyethylene material to a temperature at or below a freezing point of said modified polyethylene material.
15. The composite anti-ballistic material of claim 14 , wherein said temperature is approximately about 32° F.
16. The composite anti-ballistic material of claim 10 , wherein said at least a third layer is at least approximately 1 mm in average thickness.
17. The composite anti-ballistic material of claim 10 , further comprising at a fourth layer of magneto rheological fluid between said first layer and said second layer.
18. The composite anti-ballistic material of claim 10 , further comprising at least a fourth layer of flame retardants between said first layer and said second layer.
19. A composite anti-ballistic material comprising:
a plurality of adjacently positioned lamina and forming a desired thickness, each said lamina comprising:
a first layer of polyethylene material modified having a common molecular orientation biased along a first direction;
a second layer of polyethylene material modified having a common molecular orientation biased along a first direction;
said second layer of polyethylene material modified having a common molecular orientation biased along a second direction;
at least a third layer of carbon nanotubes between said first layer and second layer; and
each said first layer being oriented relative to each said second layer such that said first direction is biased relative to said second direction;
wherein adjacent lamina are further oriented at a bias relative to each other.
20. The composite anti-ballistic material of claim 19 , wherein said polyethylene material of said first layer and said second layer are each modified having a common molecular orientation biased by providing mechanical tension during alternate cycling of heating and cooling.
21. The composite anti-ballistic material of claim 20 , wherein said cycle of heating comprises a heating of said polyethylene material to a point above a midpoint between a melting point and a freezing point.
22. The composite anti-ballistic material of claim 20 wherein said cycle of heating comprises raising a temperature of said polyethylene material to approximately about 192° F.
23. The composite anti-ballistic material of claim 20 , wherein said cycle of cooling comprises the cooling of said polyethylene material to a temperature at or below a freezing point of said polyethylene material.
24. The composite anti-ballistic material of claim 23 , wherein said temperature is approximately about 32° F.
25. The composite anti-ballistic material of claim 19 , wherein said at least a third layer is at least approximately 1 mm in average thickness.
26. The composite anti-ballistic material of claim 19 , further comprising at a fourth layer of magneto rheological fluid between said first layer and said second layer.
27. The composite anti-ballistic material of claim 20 , further comprising at least a fourth layer of flame retardants between said first layer and said second layer.