Bulletproof materials are mainly used for personal protective equipment, in the form of bulletproof vests, bulletproof helmets, and bulletproof inserts. Body armor is "a kind of clothing that can absorb and dissipate the kinetic energy of bullets and fragments, prevent penetration, and effectively protect the protected parts of the human body."
From the perspective of use, bulletproof vests can be divided into two types: police and military. From the point of view of materials, body armor can be divided into three types: soft, hard and soft and hard composite. The material of soft body armor is mainly made of high-performance textile fibers. These high-performance fibers have much higher energy absorption capacity than general materials and endow the body armor with bullet-proof functions. And because this kind of body armor generally adopts the structure of textiles, it has considerable The softness is called soft body armor. Hard body armor is made of special steel plates, super aluminum alloys and other metal materials or aluminum oxide, silicon carbide and other hard non-metallic materials as the main bulletproof materials. The body armor made from this generally does not have flexibility.
