Diversification Of The Structure Of Bulletproof Products

- Aug 09, 2019-

Aramid cloth laminate can be used in bulletproof clothing, bulletproof plate, bulletproof helmet, bulletproof composite armor and other bulletproof products, according to the different requirements of anti-elastic energy, there has been a single structure without latitude cloth, no parallel cloth and other fabrics or materialcomposite structure and other structural forms. Teijin Aramid has developed a new one-way laminate Twaron UD22 using intelligent one-way (UD) technology, consisting of two layers of Twaron yarn, arranged in a configuration of 0?/90 degrees. Align each layer of fibers in parallel and build separately in a resin substrate and cover the top and bottom of the two one-way layers with a thermoplastic film to increase wear resistance. The Twaron UD22 has been proven to be NIJ 0101.06 compliant and can be used in soft body body armor through a series of stress and bulletproof performance tests. Traditional bulletproof shields are mostly mixed with PE materials or aramid fabrics. Wu Zhongwei and others used multi-layer aramid non-latitude cloth thermoforming to prepare a new type of aramid bulletproof shield products.

Overcoming the limitation of application application caused by the poor temperature resistance of the traditional PE material bulletproof shield, the market price of aramid bulletproof shield after pre-immersion thermal molding of aramid machine weaving was changed. For sites where bulletproof requirements are higher, additional metal materials are required to form composite structures. The research proves that the aramid non-latitude cloth laminate as a back plate can be greatly improved by compounding it with armored steel. The United States has used Kelvlar fiber laminate and ceramic or steel plate composite structure, for tank armor. In civilian terms, the United States uses high-strength fibers and steel plate or ceramic composite, as MTC bullet-proof truck bulletproof plate. Shen Feng to modify butyl rubber as the base, aramid fabric and non-latitude cloth as the enhanced material, prepared aramid bulletproof plate, and by studying the substrate material, fiber weaving method and other factors on the anti-elastic energy of the bulletproof plate, analysis and discussion of the relationship between the bulletproof plate anti-bullet limit speed (V50) and face density, and the mechanism, The expression of V50 and face density is obtained, and a bulletproof plate is produced with light weight, good resistance and good elasticity, suitable for various vehicle applications. However, the domestic development of civil bulletproof plate can only apply to the low level of bulletproof (main anti-54 pistol bullet) occasion, performance still needs to be improved. Scholars at home and abroad studied the performance of tactical helmetunders under projectile impact by ballistic impact test and finite element simulation, respectively, which is of great significance to the improvement and development of helmet performance and structure. Guo Zhenqin and others have combined a composite material for bulletproof helmets by combining aramid with waterproof layer, fire proof layer and resin layer, and determined the optimal content of each component, thus improving the fire protection, waterproof performance and anti-wear performance of bulletproof helmets, while meeting the requirements of comfort.