The full name of para-aramid is poly-paraphenylene terephthalamide, which is Para-Aramid fiber in English. It is a new type of high-tech synthetic fiber with ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance. , light weight and other excellent properties, its strength is 5 to 6 times that of steel wire, its modulus is 2 to 3 times that of steel wire or glass fiber, its toughness is 2 times that of steel wire, and its weight is only about 1/5 of steel wire. Under the high temperature, it will not decompose or melt. It has good insulation and anti-aging performance, and has a long life cycle. The discovery of aramid 1414 is considered to be a very important historical process in the material industry.
Para-aramid fiber is an important national defense military material. In order to meet the needs of modern warfare, at present, the bulletproof vests of developed countries such as the United States and Britain are made of aramid fiber. The lightweight of aramid bulletproof vests and helmets has effectively improved the military rapid response and lethality. During the Gulf War, aramid composite materials were widely used in US and French aircraft. In addition to military applications, it has been widely used as a high-tech fiber material in various aspects of the national economy such as aerospace, electromechanical, construction, automobiles, and sporting goods. In aviation and aerospace, para-aramid fiber saves a lot of power fuel due to its light weight and high strength. According to foreign data, during the launch of a spacecraft, every 1 kg of weight reduction means a reduction of 1 million US dollars. the cost of. In addition, the rapid development of science and technology is opening up more new civil space for aramid fiber. According to reports, at present, para-aramid products are used in body armor, helmets, etc., accounting for about 7-8%, aerospace materials, sports materials account for about 40%; tire frame materials, conveyor belt materials, etc. account for about 20% About 13%, there are also high-strength ropes and other aspects.
