Aramid fiber self-adaptive wrapping and intercepting structure for body armor

Abstract

The aramid fiber self-adaptive wrapping interception structure is made of dual-modulus Kevlar fabric and can automatically contract in the radial direction under the impact of a high-speed conical penetration body, encircle a conical surface and form self-locking, and slippage, penetration and secondary damage of the penetration body are effectively prevented. The structure is flexible, lightweight and comfortable to wear, can be independently used or compounded with a shape memory alloy protection plate to form an efficient double-layer bulletproof system, and is suitable for mass production application of military police bulletproof equipment.

Description

Technical Field

[0001] This invention belongs to the field of bulletproof protection technology, specifically relating to an aramid fabric protective structure that can automatically gather, wrap, and lock against high-speed conical penetrators. Background Technology

[0002] Traditional bulletproof fabrics rely on fiber stretching and breaking to absorb energy, which can easily lead to slippage, penetration, and secondary damage from high-speed conical penetrators. Existing flexible protective layers are difficult to actively restrain and lock penetrators, resulting in insufficient protective stability. Summary of the Invention

[0003] This invention provides an aramid adaptive wrapping and interception structure for bulletproof vests, made of warp and weft bimodulus aramid fabric. The fabric is structurally designed to form petal-shaped wrapping units, with high-strength, low-elongation Kevlar fibers in the warp direction serving as the main load-bearing component, and high-modulus deformation-guiding fibers in the weft direction. Under the penetrating impact of a high-speed conical penetrator, the fabric units contract and wrinkle radially, forming a gripping and self-locking structure against the conical surface of the penetrator, achieving fixation of the penetrator, anti-slip, anti-penetration, and prevention of secondary injury. This structure can be used independently or in conjunction with an outer shape memory alloy adaptive protective plate to form a dual-layer composite bulletproof system. Attached Figure Description

[0004] Figure 1: Schematic diagram of the overall structure. Wherein, 1—outer rigid constraint ring; 2—three-dimensional boundary region (Ridges); 3—deformation unit (Cells); 4—warp yarn. Reinforcing ribs (radial stress ribs); 5—Initial inner hole (inner anti-slip layer). Figure 2: Schematic diagram of petals unfolding. Among them, 4-petal units (Cells). Figure 3: Schematic diagram of the warp and weft bimodal structure of the fabric. Among them, 5—warp Kevlar reinforcing rib (radial reinforcing rib); 6—circumferential high elongation yarn. Figure 4: Schematic diagram of target rotation interception and fixed working state. Among them, 1—outer ring rigid constraint ring; 4—petal unit (Cells, with warp yarn reinforcement); 8—composite fabric layer; 8c—moving core interception and locking zone. Detailed Implementation This aramid adaptive wrapping and interception structure is located in the inner layer of the bulletproof vest and is woven from warp and weft bimodulus Kevlar fabric. When a penetrator passes through the outer protective plate and enters this structure, the impact tension causes the fabric to contract rapidly in the radial direction, forming a multi-lobed wrapping structure that tightly holds the cone. The surface forms a self-locking mechanism, preventing the penetrator from penetrating further, while absorbing the remaining energy. When used in conjunction with an outer shape memory alloy protective plate, the outer layer deflects and slows down the penetrator, while the inner layer provides final encapsulation and locking. The protective effect has been significantly improved.

Claims

1. An aramid adaptive wrapping and interception structure for bulletproof vests, characterized in that, It is made of warp and weft bimodal aramid fabric; the warp uses high-strength, low-elongation Kevlar fiber, and the weft uses high-modulus deformation guiding fiber. Under the impact of a high-speed conical penetrator, the fabric can shrink and wrinkle radially, forming a structure that embraces, holds, and self-locks the conical surface of the penetrator.

2. The structure according to claim 1, characterized in that, The fabric is configured as a petal-shaped wrapping unit layout, which enables multi-petal adaptive circumferential locking of the conical penetrator.

3. The structure according to claim 1, characterized in that, This structure can be used independently as a flexible protective layer inside a bulletproof vest.

4. The structure according to claim 1, characterized in that, This structure, when used in conjunction with a shape memory alloy adaptive protective plate, forms a dual-layer composite bulletproof system with an outer deflection layer and an inner locking layer.

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