Ballistic material
AssigneeSuper Skin Systems, Inc.
InventorSTUART BRUCE SMITH
Life of this patent
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Abstract
A polyurea hybrid ballistic armor formed from novel cured reaction products of various diamines and polyester diols with isocyanate curing agents. The cured reaction product can absorb large amounts of energy from ballistic projectiles, and when various hard granular particles are embedded within the cured reaction product, a strike plate effect can be realized, allowing the polyurea hybrid ballistic armor to defeat ballistic projectiles. The polyurea hybrid ballistic armor can additionally be utilized to add additional layers of protection to existing armor systems.
Claims20
A polyurea hybrid ballistic armor comprising:
- the cured reaction product of:
- a prepolymer formed from an isocyanate curing agent and a mixture of polyetheramines having the general formula:
- CH3—(CH—CH3)—NH—[(CH—CH3)—CH2-O]n—CH2—(CH—CH3)—NH—(CH—CH3)—CH3;
- and
- a mixture of polycaprolactone polyester diols having the general formula:
- HO—[CH2—CH2—CH2—CH2—CH2—(C═O)—O]n—H.
The polyurea hybrid ballistic armor of claim 6, wherein the isocyanate reaction catalyst is chosen from the group of:
- zirconium dionate, zirconium acetylacetonate, bismuth carboxylate, aluminum dionate, dibutyltin dilaurate, dibutyltin diacetate.
The polyurea hybrid ballistic armor of claim 9, wherein the plurality of granular particles have a particle size distribution chosen within the range of about 4 to 20 mesh.
The polyurea hybrid ballistic armor of claim 9, wherein the plurality of granular particles are zirconium dioxide and have a particle size distribution of about 18 mesh.
A polyurea hybrid ballistic armor comprising:
- the cured reaction product of:
- a prepolymer formed from methylene diphenyl diisocyanate (MDI) and a mixture of polyetheramines having the general formula:
- CH3—(CH—CH3)—NH—[(CH—CH3)—CH2-O]n—CH2—(CH—CH3)—NH—(CH—CH3)—CH3;
- and
- a mixture of polycaprolactone polyester diols having the general formula:
- HO—[CH2—CH2—CH2—CH2—CH2—(C═O)—O]n—H;
- wherein the mean molecular weight of the polyetheramines is about 2050, the mean molecular weight of the polycaprolactone polyester diols is about 400, the ratio of the prepolymer to polycaprolactone polyester diol is about 1.66:1 by weight, and in the prepolymer, the ratio of MDI to polyetheramines is about 2.2:1 by weight.
A polyurea hybrid hybrid ballistic armor comprising:
- the cured reaction product of:
- a mixture of saturated aliphatic polyester diols;
- one or more diamines;
- and
- an isocyanate curing agent;
- wherein the mixture of saturated aliphatic polyester diols has a hydroxyl equivalent weight of between about 200 and 250.
The polyurea hybrid ballistic armor of claim 17, wherein the plurality of granular particles have a particle size distribution chosen within the range of about 4 to 20 mesh.
The polyurea hybrid ballistic armor of claim 20, wherein the cured reaction product comprises at least one strike portion having substantially all of the plurality of granular particles embedded therein, and at least one non-strike portion having substantially none of granular particles embedded therein.
Dependencies are inferred from the claim text.