CN-121994077-A - Aramid fiber self-adaptive wrapping and intercepting structure for body armor

Abstract

The invention discloses an aramid fiber self-adaptive wrapping and intercepting structure for a body armor, which is made of double-modulus Kevlar fabric, and can automatically radially shrink, encircle a conical surface and form self-locking under the impact of a high-speed conical penetration body, so that the penetration body is effectively prevented from sliding, penetrating and secondarily injuring. The structure is flexible, light and comfortable to wear, can be used singly or combined with a shape memory alloy protection plate to form a high-efficiency double-layer bulletproof system, and is suitable for mass production application of army bulletproof equipment.

Inventors

• SUN HAIBO
• SUN BIN

Assignees

• 孙海博
• 孙斌

Dates

Publication Date

20260508

Application Date

20260310

Claims (4)

1. 1. A self-adaptive aramid fiber wrapping and intercepting structure for a body armor is characterized in that the self-adaptive aramid fiber wrapping and intercepting structure is made of warp-weft double-mode aramid fiber fabrics, the warp direction is made of high-strength low-elongation Kevlar fibers, the weft direction is made of high-modulus deformation guide fibers, and under the impact action of a high-speed conical penetration body, the fabrics can shrink and wrinkle in the radial direction to form a surrounding, holding and self-locking structure for the conical surface of the penetration body.
2. 2. The structure of claim 1, wherein the fabric is configured in a petal wrapping unit layout to achieve multi-petal adaptive encircling locking of the cone penetration body.
3. 3. The structure of claim 1, wherein the structure is used independently as a flexible armor layer.
4. 4. The structure of claim 1, wherein the structure is used in combination with a shape memory alloy adaptive shield to form a double layer composite ballistic protection system with outer deflection and inner locking.

Description

Aramid fiber self-adaptive wrapping and intercepting structure for body armor Technical Field The invention belongs to the technical field of bulletproof protection, and particularly relates to an aramid fabric protection structure capable of realizing automatic folding, wrapping and locking of a high-speed conical penetration body. Background The traditional bulletproof fabric absorbs energy by means of fiber stretching and breaking, is prone to sliding, penetration and secondary injury risks to a high-speed conical penetration body, and the existing flexible protective layer is difficult to realize active restraint and locking of the penetration body, so that the protection stability is insufficient. Disclosure of Invention The invention provides an aramid fiber self-adaptive wrapping and intercepting structure for a body armor, which is made of warp-weft double-modulus aramid fiber fabrics, wherein the fabrics form a petal-type wrapping unit through structural design, the warp direction adopts high-strength low-elongation Kevlar fibers as a stressed main body, the weft direction adopts high-modulus deformation guide fibers, and the fabric units shrink and wrinkle in a radial direction under the penetrating impact action of a high-speed conical penetration body to form a holding and self-locking structure for the conical surface of the penetration body, so that the penetration body is fixed, prevented from sliding, prevented from penetrating and prevented from being secondarily damaged. The structure can be independently used, and can also be matched with an outer layer shape memory alloy self-adaptive protection plate to form a double-layer composite bulletproof system. Drawings FIG. 1 is a schematic diagram of the whole structure. Wherein, 1-outer ring rigid constraint ring, 2-three-dimensional demarcation region (Ridges), 3-deformation units (Cells), 4-warp yarn Reinforcing ribs (radial stress ribs) and 5-initial inner holes (inner anti-skid layer). Figure 2 is a schematic diagram showing the unfolding of petals. Among them, 4-petal units (Cells). FIG. 3 is a schematic diagram of a warp-weft dual modulus structure of the fabric. Wherein, 5-warp Kevlar force-bearing ribs (radial force-bearing ribs) and 6-circumferential high elongation yarns. FIG. 4 is a schematic diagram of the target rotation interception and fixation operation state. Wherein, 1-outer ring rigid constraint ring, 4-petal units (Cells, with warp reinforcing ribs), 8-composite fabric layer and 8 c-movable core interception lock dead zone. Detailed Description When the penetration body passes through the outer layer protection plate and enters the structure, impact tension makes the fabric shrink rapidly along the radial direction to form a multi-petal encircling structure, and the encircling cone The faces are self-locking, preventing further penetration of the penetration body, and absorbing the rest energy. When the protective plate is matched with the outer memory alloy protective plate, the outer layer realizes penetration body deflection and speed reduction, the inner layer realizes final package and locking, The protection effect is obviously improved.