The bulletproof vest is mainly composed of two parts: the jacket and the bulletproof layer.
2. The sleeve is often made of chemical fiber fabric.
The bulletproof layer is made of metal (special steel, aluminum alloy, titanium alloy), ceramic sheet (corundum, boron carbide, silicon carbide, aluminum oxide), glass fiber reinforced plastic, nylon, Kevlar, ultra-high molecular weight polyethylene fiber, liquid protective materials and other materials to form a single or composite protective structure.
4. Bulletproof layer can absorb the kinetic energy of the warhead or shrapnel, and has a significant protective effect on low-speed warheads or shrapnel, and can reduce the damage to the human chest and abdomen under the control of a certain depression.
5. Body armor includes infantry body armor, flight crew body armor and artillery body armor, etc.
6. According to the appearance can also be divided into bulletproof undershirt, full protection body armor, women's body armor and other types.
7. Bulletproof vest: bulletproof vest refers to "a garment that can absorb and dissipate the kinetic energy of warheads and fragments, prevent penetration, and effectively protect the protected parts of the human body".
8. From the point of view of use, bulletproof vests can be divided into police and military type.
9. From the material point of view, bulletproof vests can be divided into soft body, hard body and soft and hard composite body three.
10. Soft body body armor material is mainly based on high-performance textile fiber composite weftless cloth, these high-performance fibers are much higher than the general material energy absorption capacity, giving the body armor bulletproof function, and because this kind of body armor generally uses the structure of textiles, and therefore has considerable softness, known as soft body armor.
11. Hard body body armor is made of special steel plates, super aluminum alloy and other metal materials or aluminum oxide, silicon carbide and other hard non-metallic materials as the main body armor, which is made of body armor generally does not have softness, mainly in the form of inserts.
12. The softness of soft and hard composite body armor is between the above two types, and it is a composite body armor with soft material as the liner and hard material as the panel and reinforcing material.
13. As a protective item, the first core performance that bulletproof vest should have is ballistic performance.
14. At the same time, as a kind of functional clothing, it should also have certain performance for clothing.