Aramid fiber composite bulletproof helmet of special structural design and forming method of helmet

Abstract

The invention provides an aramid fiber composite bulletproof helmet of a special structural design and a forming method of the helmet. The aramid fiber composite bulletproof helmet comprises a shell, a paint layer and a suspension piece, and is characterized in that the shell comprises an inner layer and an outer layer, the inner layer is composed of a plurality of layers of high-rubber-content fabric presoak materials, the outer layer is composed of a plurality of layers of low-rubber-content fabric presoak materials, and a polyurethane adhesive reinforcing layer is arranged between the inner layer and the outer layer of the shell. According to the bulletproof helmet manufactured according to the structural design and the forming process, the high strength of aramid fiber and mechanical properties of composite materials are brought into full play on the aspect of the bulletproof mechanism, the height of a bump generated on the inner side of the helmet after a bullet is shot is effectively reduced, and the injury to the head of a user from the protrusion on the inner side of the helmet is reduced. The number of layers through which the bullet penetrates is effectively reduced, and the safe margin of the helmet is improved. Due to the fact that more low-rubber-content presoak materials are adopted, the overall weight of the helmet is reduced by more than 50 g.

Description

technical field [0001] The invention relates to the technical field of bulletproof helmets, in particular to an aramid composite bulletproof helmet with a special structural design and a forming method thereof. Background technique [0002] Existing bulletproof helmets are classified according to raw materials, and lightweight composite helmets are divided into two categories: aramid composite helmets and PE composite helmets. In contrast, although PE composite helmets are cheap, they have high shell thickness, large dynamic dents, and poor high-temperature resistance, and are mainly suitable for medium and low-end customers; aramid composite helmets have low shell thickness and small dynamic dents. , high temperature resistance, excellent rigidity and other advantages, but the price is high, suitable for medium and high-end customers. [0003] The current bulletproof helmet patents mostly involve the helmet's multifunctional configuration, appearance, connection methods, e...

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Problems solved by technology

In contrast, although PE composite helmets are cheap, they have high shell thickness, large dynamic dents, and poor high-temperature resistance, and are mainly suitable for medium and low-end customers; aramid composite helmets have low shell thickness and small dynamic dents. , high temperature resistance, excellent rigidity and other advantages, but the price is high, suitable for middle and high-end customers

[0003] The current bulletproof helmet patents mostly involve the helmet's multifunctional configuration, appearance, connection methods, etc., such as accessories for communication functions, electrified accessories, face shields, etc., and also related to the helmet's process molding method, but UHMWPE (later PE for short) is more raw material, less with aramid as raw material, and the existing method of making bulletproof helmets with aramid as raw material needs special fabrics and special equipment, and ordinary aramid fabrics are not used. Design method, a precedent for making high-performance aramid ballistic helmets

[0004] In addition, the existing methods of preparing bulletproof helmets are basically to directly superimpose multiple layers of the same fiber material and then perform hot pressing at a certain temperature. Due to the single bulletproof core material of this kind of bulletproof helmet, the bulletproof effect is more than that of the used one. The number of layers is related. The more layers, the better the bulletproof effect, but the corresponding weight will be greater, and the cost will increase accordingly.

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