UD weftless cloth is mostly used in the manufacture of bulletproof cloth
At present, the high-performance fibers widely used in bulletproof materials are mainly aramid fiber and high-strength and high modulus polyethylene fiber. Because the melting point of high strength and high modulus polyethylene fiber is low, only 150 ℃, when it is penetrated by bullets, friction generates a lot of heat, which is easy to burn and seriously affects its bulletproof performance; Aramid fiber has a high melting point of 560 C, and has excellent aging resistance and long life cycle. At present, aramid 1414 fiber has not formed a certain production capacity in China, which mainly depends on imports. With the gradual localization of aramid fiber to form a certain production capacity, the market of aramid fiber applied in bulletproof field will gradually expand. The demand for fiber bulletproof materials will reach more than 1000 t in domestic market in normal years.
The key product of high-performance aramid bulletproof material is aramid unidirectional cloth. The quality of unidirectional cloth directly determines the performance of aramid weft free bulletproof material. There are two key factors affecting the elastic energy of unidirectional cloth: the tension of a single fiber and the formula and ratio of adhesive resin. Therefore, to explore the tension of a single fiber and the formula and ratio of adhesive resin is very important to improve the performance of products. Therefore, it is of great practical significance to explore and explore a group of good process methods.
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