A three-dimensional woven composite bulletproof helmet and preparation method thereof

Abstract

The invention discloses a three-dimensional braided composite material bulletproof helmet and a production method thereof. The problems of poor overall rigidity and strength, weak interlayer combination and many raw material limitations of bulletproof helmets in the prior art are solved in the invention. The bulletproof helmet comprises a three-dimensional braided structure, a secondary stitching reinforcing structure along the thickness direction and an impregnated resin layer wherein, a helmet body having the three-dimensional braided structure is a 3D 4-directional or 3D 5-directional braided structure, a head back area for protecting the head back and a forehead area for protecting the forehead adopt a 3D 6-directional or 3D 7-directional braided structure, the braided structure is formed through braiding main body fibers and reinforcing fibers, a mass ratio of the main body fibers to the reinforcing fibers is 3:1 to 7:1, the main body fibers are aramid fibers or carbon fibers, and the reinforcing fibers are silicon carbide fibers or alumina fibers.

Description

technical field [0001] The invention relates to the field of bulletproof helmet preparation, in particular to a three-dimensional braided composite material bulletproof helmet and a preparation method thereof. Background technique [0002] Helmets are protective equipment commonly used in military or civilian industries. Bullet-proof or riot-proof helmets in military or police industries can greatly protect against bullets or fragments and protect the lives of police officers or soldiers; in civilian industries, such as In engineering fields such as construction and transportation, safety helmets also play a vital role in ensuring the personal safety of construction or transportation workers; in other fields, such as sports and leisure industries, competitive motorcycle helmets and helmets worn by rugby players are important It also plays a very necessary role in ensuring that athletes in competitive sports are protected from impact injuries. [0003] With the continuous im...

AI Technical Summary

Problems solved by technology

[0004] The fiber arrangement structure used in the current composite materials is mainly a two-dimensional or unidirectional fiber structure, and the resin used is mainly a thermosetting resin or a series of other modified resins. The main molding method is generally resin and fiber. Preliminary impregnation forms a prepreg material, and then it is prepared by molding or laminating conventional composite materials, using large-scale pressure equipment through high pressure and heating. The helmets produced by this molding process are basically laminated structures. This kind of helmet has the problem of weak interlayer strength, especially in complex use environments (such as high temperature, extreme cold, sandstorm, salt spray, etc.), this structure is prone to delamination or cracking due to high-pressure bonding between layers phenomenon, which has a great production technology bottleneck for the long-term maintenance of the comprehensive performance of helmets in various application fields

[0005] At the same time, due to the high requirements on the integrity, service life and weight of the bulletproof helmet, at present, the main materials of the bulletproof helmet are ultra-high molecular weight polyethylene fiber and aramid fiber, and other fiber materials Difficulty meeting requirements for bulletproof helmets

[0006] To sum up, there is still a lack of effective solutions to the problems of poor overall rigidity and strength, weak interlayer bonding and many raw material restrictions in bulletproof helmets in the prior art.

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