[Webbing with webbing] A piece of cloth that cannot be cut by a knife or burnt. In order to study this cloth, it cost more than 100 million yuan. On the 13th, Yantai Spandex Co., Ltd. released news that para-aramid, the main component of the "unbreakable cloth", was successfully put into production in Yantai. This project with an annual output of 1,000 tons puts China among the important basic materials that have the same national security and national economy as the United States and Japan.

    "Unbreakable cloth" can be bulletproof

    Para-aramid is also called "aramid 1414". On the afternoon of the 13th, I saw this high-tech fiber material with golden color in Yantai Spandex Co., Ltd. Dr. Ma Qianli, deputy general manager of the company, told the author that para-aramid has excellent characteristics such as high strength, high modulus, flame retardancy, high temperature resistance, electrical insulation, etc., and carbon fiber and high strength high modulus polyethylene fiber are also called the world's top three high-performance fibers. It's quite mysterious to say, in fact para-aramid is widely used in our daily life. Para-aramid fiber, which looks like shiny metal wire, is actually a liquid crystal polymer composed of rigid long molecules. It has unprecedented high strength, high modulus and high temperature resistance. There is a saying of synthetic steel wire.

    Dr. Ma Qianli said that para-aramid strength is 5-6 times that of high-quality steel, toughness is 2 times that of steel, and the weight is only 1/5 of steel. Its shadow can be found in aerospace, safety protection, backbone equipment, transportation, structural enhancement, automobile manufacturing and other fields.

    In the exhibition room of Yantai Spandex Co., Ltd., Ma Qianli explained to the author one by one. It is reported that after the para-aramid yarn is woven into aramid cloth, a major use is to process body armor.

    I was the first to wear body armor made from it. Ma Qianli uncovered several layers of "thin plates" inside the clothes and said that they were all made of para-aramid cloth. The aramid fiber can absorb and disperse the impact energy of the bullet into other fibers of the braid to avoid blunt injuries. . At present, the company has received orders from countries and regions such as North America and Brazil. The export value of each body armor is about 10,000 yuan.