A bulletproof vest mainly consists of two parts: a jacket and a bulletproof layer. The bulletproof layer plays a major role. Protect the human body from damage caused by warheads or shrapnel.
UHMWPE, along with carbon fiber and aramid fiber, is known as the world's three major high-tech fibers.
With the development of high-tech, fiber synthesis, and spinning processes in the world, high-performance fibers have been continuously developed and innovated, and have entered a high-speed development stage. Bulletproof materials made of high-performance fiber materials are lightweight, flexible, and have good protective effects. The soft bulletproof vest made of aramid fabric has achieved a revolutionary breakthrough in wearing comfort, and the emergence of UHMWPE fiber further improves the protective performance of soft bulletproof composite materials. Due to its lightweight, high strength, and high specific energy absorption characteristics, it has gradually replaced aramid fibers as the preferred fiber in the field of bulletproof.
The specific strength of UHMWPE fiber is more than ten times that of steel wire with the same cross-section, and more than three times that of carbon fiber and aramid 1414. Moreover, UHMWPE fiber has a greater energy absorption than impact, which is 1.8, 2.6, and 3 times that of carbon fiber, aramid, and general glass fiber composite materials, respectively. Its bulletproof ability is 2.6 times higher than that of aramid armor structures, and it is currently the main material for manufacturing bulletproof vests.
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