At present, the materials used on bulletproof vests, especially soft bulletproof vests, are mainly high-performance fibers. These high-performance fibers are characterized by high strength and high modulus. There are several types of bulletproof materials that can be used in the field of bulletproof. However, except for UHMWPE and Kevlar, which are currently high-performance and reasonably priced
Why are UHMWPE and Kevlar the Main Bulletproof Materials?
In terms of bulletproof materials, in order to meet the requirement of absorbing bullet and other projectile kinetic energy to a large extent, bulletproof materials need to have high strength, good toughness, and strong energy absorption ability.
At present, the materials used on bulletproof vests, especially soft bulletproof vests, are mainly high-performance fibers. These high-performance fibers are characterized by high strength and high modulus. There are several types of bulletproof materials that can be used in the field of bulletproof. However, except for UHMWPE and Kevlar, which are currently high-performance and reasonably priced materials, other materials have not been widely used due to their high cost, complex manufacturing processes, or defects in bulletproof ability.
Some high-performance fibers, such as carbon fiber or boron fiber, although have high strength, are generally not suitable for human body bulletproof vests due to poor flexibility, small fracture toughness, difficulty in textile processing, and high prices.
Specifically, for bulletproof fabrics, their bulletproof effect mainly depends on the following aspects: fiber stretching, fiber fracture elongation and work, fiber modulus, fiber orientation and stress wave transmission speed, fiber fineness, fiber aggregation mode, fiber weight per unit area, yarn structure and surface characteristics, fabric organization structure, fiber mesh layer thickness, number of layers of mesh layer or fabric layer, etc.
The performance of fiber materials used for impact resistance depends on the fracture energy of the fibers and the speed of stress wave propagation. Stress waves require rapid diffusion, and the fracture energy of fibers under high-speed impact should be maximized. The tensile fracture work of a material is the energy it possesses to resist external damage, and it is a function related to tensile and elongation deformation.
Therefore, theoretically speaking, materials with higher tensile strength and stronger elongation deformation ability have greater potential for energy absorption. However, in practice, materials used for bulletproof vests do not allow for excessive deformation, so fibers used for bulletproof vests must also have high resistance to deformation, i.e. high modulus.
Our company specializes in producing UHMWPE fibers and their derivative bulletproof equipment precisely because we have discovered the enormous potential and application range of UHMWPE in the field of bulletproof. If you have a need for bulletproof materials and products, please contact us.