321results about How to "Improve ballistic performance" patented technology

The present invention provides fabrics that have unique mechanical, chemical, electrical, and thermal properties. The fabrics comprise layers of woven, knit or felted fibers, yarns or tow. Interstitially synthesized nanotubes, such as single-walled or multi-walled carbon nanotubes, enhance the fabric's antiballistic properties. These nanotubes may also insulate, semi-conduct or super-conduct electrical charges, or provide enhanced thermal properties of these fabrics which can be layered to form unique garments or structures.

A ballistic vest having a front panel and a rear panel attached to each other by releasable connectors. The front and rear panel each have a ballistic package having a plurality of sheets of ballistic material and a semi-rigid frame structure attached to the layers of the ballistic material. The frame structure has a plurality of members defining openings in the frame structure wherein the frame structure absorbs energy from a projectile entering the sheets of ballistic material.

The present invention provides fabrics that have unique mechanical, chemical, electrical, and thermal properties. The fabrics comprise layers of woven, knit or felted fibers, yarns or tow. Interstitially synthesized nanotubes, such as single-walled or multi-walled carbon nanotubes, enhance the fabric's antiballistic properties. These nanotubes may also insulate, semi-conduct or super-conduct electrical charges, or provide enhanced thermal properties of these fabrics which can be layered to form unique garments or structures.

The invention discloses a method for preparing a bulletproof formed part, which comprises the steps of: a) overlapping more than two layers of high-performance fiber weftless cloth, imposing the pressure of between 0.1 and 1MPa to ensure that the air among the weftless cloth escapes, then increasing the temperature of the weftless cloth to be between 110 and 120 DEG C, and then imposing the pressure of between 1 and 3MPa for pre-press forming; b) performing heat preservation on the weftless cloth after the pre-press forming for 20 to 120min under the vacuum condition that the temperature is between 120 and 130 DEG C and the pressure is lower than 0.5kpa; and c) imposing the pressure of between 10 and 20MPa on the weftless cloth after the vacuum treatment in a hot pressing mold with a temperature of between 120 and 130 DEG C, performing heat preservation and pressure maintaining for 20 to 60min, and then cooling the weftless cloth to room temperature to obtain the bulletproof formed part. An adhesive in the weftless cloth has good fluidity at high temperature, so the pre-press forming and the subsequent vacuum treatment of the weftless cloth can ensure that the bonding of fiber andthe adhesive is evener, reduce the defects such as pores and the like, and improve the bulletproof performance of the weftless cloth.

A ballistic panel is described that comprises a ballistic-resistant component and a cover that comprises a laminate comprising (i) a substrate layer and (ii) an inner bonding layer. The cover is bonded to at least one surface of the ballistic-resistant component by the inner bonding layer of the laminate, and is bonded around the perimeter of the ballistic resistant component to form a perimeter seal. A method for making the ballistic panel is also described.

The invention relates to a preparation method of a bullet-proof plate, particularly to a preparation method of a continuous fiber-toughened silicon carbide ceramic bullet-proof plate. The preparationmethod has the beneficial effects that the continuous fiber-toughened silicon carbide ceramic provided by the invention inherits high hardness and abrasion resistance advantages of a silicon carbide ceramic material, exerts the continuous fiber reinforcing and toughening principle, and overcomes the inherent defects, of pure silicon carbide ceramic, that inherent toughness is poor and external shock load resistance performance is poor, so that the continuous fiber-toughened silicon carbide ceramic has the characteristics like low density, high specific strength, high specific modulus, high hardness and shock resistance, and bullet-proof performance, particularly multi-bullet-proof performance, of the bullet-proof plate can be effectively improved; a continuous fiber-toughened silicon carbide ceramic material is prepared through a polymer high-pressure impregnation pyrolysis technology, the technology is simple, and preparation cost is low; and a setting method provided by the inventionis simple and flexible, and size customization of the bullet-proof plate is facilitated.

An article is disclosed to protect a wearer from spike and ballistic threats that is made from a spike resistant panel and a ballistic resistant panel. Each panel is made from flexible fabric layers. The fabrics in the spike resistant panel are made from first yarns having a linear density of from 50 to 600, with a plurality of filaments. There are 40 to 100 first yarns per inch in both the warp and fill directions. The fabrics in the ballistic resistant panel are made from second yarns having a linear density of from 100 to no more than 840 denier with a plurality of filaments, which provide from 20,000,000 to no more than 90,000,000 filament crossovers per square inch. There are 5 to less than 40 second yarns per inch in both the warp and fill directions

The invention discloses a bulletproof formed part comprising at least two barrier layers and buffer layers between every two barrier layers, wherein the barrier layers and the buffer layers comprise aplurality of superposed weftless fabrics; the weftless fabrics comprises fibers of which the strength is at least 15 cN / dtex and the modulus is at least 390 cN / dtex; in each buffer layer, the anglesformed by the fibers in the adjacent weftless fabrics are 40-60 DEG; and in each barrier layer, the angles formed by the fibers in the adjacent weftless fabrics are 85-95 DEG. The invention also provides a preparation method of the bulletproof formed part. The barrier layers can effectively reduce the bullet speed due to the high strength, and the buffer layers are beneficial to the absorption andthe diffusion of the kinetic energy of the bullets due to the same property in all directions; and therefore, under the alternate actions of the barrier layers and the buffer layers, the bulletproofformed part has favorable bulletproof function and can protect the user from being hurt by bullets when used as a bulletproof helmet or bulletproof vest.

The invention provides an anti-bullet / wave-absorbing structure integrated composite material and a preparing method thereof. The anti-bullet / wave-absorbing structure integrated composite material is formed by combining anti-bullet layers with different thickness and electromagnetic wave-absorbing layers with different concentration to form a multilayer composite structure, and is prepared by the integrated composite heat pressure, and the concentration of the electromagnetic wave-absorbing layers is gradually increased from top to bottom. The preparing method includes the following steps: different numbers of sheets of the fiber cloth coated with resin are orthographically laid layer-by-layer, and the anti-bullet layers are prepared; an absorbent in different ratio and the resin are uniformly dispersed, thereby the electromagnetic wave-absorbing layers with different concentration are prepared; the anti-bullet layers are alternatively combined with the electromagnetic wave-absorbing layers with different concentration, and the anti-bullet / wave-absorbing structure integrated composite material are prepared. The anti-bullet / wave-absorbing structure integrated composite material has the advantages of lightweight, high anti-bullet property, wideband electromagnetic wave-absorbing, adjustable structure thickness, excellent mechanical property, and flame retardation, the preparing method is simple in technology, is convenient in operation, and is economic and environmental-friendly.