Patent ID: 9127915
Filing Date: 2015-09-08
Classification: B32B,C08J,F41H,Y10T

Abstract:
1. A lightweight self-healing composite comprises a region-specific microstructure in a monolithic form that dampens ballistic energy wherein the region-specific microstructure includes at least one semi-crystalline thermoplastic, at least one nanoparticle nucleating agent, and at least one compatiblizer selected from the group consisting of grafted maleated polyolefins, organosilanes, fatty acid derivatives, long-chain chlorinated paraffins, and polyolefin copolymers with acid anhydrides incorporated into the polymer backbones, wherein the at least one nanoparticle nucleating agent is selected from the group consisting of silicone dioxide, titanium dioxide, tantalum pentodixe and a combination thereof, and wherein the at least one nanoparticle nucleating agent has a particle size less than 200 nm and is about 20% to 50% by weight of the said self-healing composite, wherein the region-specific microstructure comprises (i) hard regions comprised of thermoplastic microcrystallines developed from the at least one semi-crystalline thermoplastic, anchored on nanoparticle nucleating agents and (ii) soft regions comprised of thermoplastic amorphous chains developed from the at least one semi-crystalline thermoplastic, wherein the hard regions are substantially surrounded by the soft regions, wherein the volume ratio of the soft regions to the hard regions is from about 50/50 to about 95/5, wherein the thermoplastic microcrystallines in the hard regions further form a honeycomb-like porous network structure comprising pores with an average pore size ranging from about 100 nm to about 5 microns, wherein the self-healing composite has anti-ballistic capability to stop a 0.30-06 armor piercing round with an areal density not greater than 25 pounds per square foot.