Fiber material - application of aramid

In the Gulf War, American and French aircraft used a large number of aramid composite materials. Aramid fiber is an important national defense military material. In addition to military applications, it has been widely used as a high-tech fiber material in aerospace, electromechanical, construction, automotive, sporting goods. Waiting for all aspects of the national economy.

At present, the bulletproof vests of the developed countries such as the United States and Britain are all aramid materials, and the lightweight of the aramid bulletproof vests and helmets effectively improves the rapid response energy of the military. In aviation and aerospace, aramid has saved a large amount of power fuel due to its light weight and high strength. According to foreign data, each kilogram of weight lost during the launch of the spacecraft means a cost reduction of 1 million US dollars. .

In addition, the rapid development of science and technology is opening up more new civil space for aramid. According to reports, at present, aramid products are used for body armor, helmets, etc., accounting for 7 to 8%, aerospace materials, sports materials accounting for about 40%; tire frame materials, conveyor belt materials, etc. account for about 20%, There are also about 13% of high-strength ropes. The tire industry has also begun to use a large number of aramid cords to reduce weight and reduce rolling resistance.

Application characteristics of aramid fiber:

1. Non-conductivity: In modern engineering, such as subways, tunnels, electrified railways, industrial plants, etc., the insulation requirements are very high. In the reinforcement and reinforcement of these projects, aramid fiber has an absolute advantage. Provide a better choice for these areas.

2. Good corrosion resistance: especially resistance to strong alkali corrosion. This is not comparable to other FRP composite materials. Because of the strong corrosiveness of seawater on concrete structures, it is mainly because there are more chloride ions inside. As a result of carbonization of concrete and rust expansion of steel bars, aramid staple fibers are a good choice in the reinforcement and protection of some seaport terminals.