Aramid fiber is a new type of high-tech synthetic fiber with soft texture, low density, high strength, high modulus, and high temperature resistance. It can be used for more than 10 years at 220 degrees, and will not decompose or decompose at a temperature of 560 degrees. melt.
The strength of chopped aramid fiber is 5-6 times that of steel wire, its modulus is 2-3 times that of steel wire or glass fiber, its toughness is twice that of steel wire, and its weight is only about one-fifth of steel wire. It is an aerospace. Important basic materials in high-tech fields such as aviation, national defense, electronics, and chemical development.
Aramid fiber cloth has a wide range of applications in the reinforcement of old bridges
Aramid fiber cloth is mainly used to resist tensile force when reinforcing members. Generally, it is used for the tensile parts of beams, the shearing parts of beams and columns, and the beam reinforcement of columns or bridge piers. Aramid fiber reinforced reinforced concrete rigid frame arch bridge has the advantages of simple technology, convenient construction, and low comprehensive cost. It is a reinforcement method worth popularizing.
Using para-aramid fiber in the belt layer of car radial tires can reduce tire rolling resistance by 5% to 7%; for truck tire carcass, the mass can be reduced by 2.4 to 5.2. The air temperature in the tire is 5cc lower than that of steel tires. The surface life is prolonged by 12% to 14%, and the fuel saving is increased by 1.25%; used for the belt of truck tires, the mass can be reduced by 5.5 to 6.7 kg, the impact resistance is better, and the breaking energy is 20% higher at the same belt strength; For bias truck tires, compared with nylon, the tread life is prolonged by 20% to 25%; for aviation tires, it has excellent wear resistance; for engineering tires, it can obtain good cut resistance,
