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Selection of aramid fiber
Published:2010/6/29      Browse:2319
1, no electrical conductivity: the project, the like MTR, tunnels, electrification of railways and industrial plants, etc., right insulation of high requirements Zhexie reinforcement reinforcement works, the aramid fiber Youzhejuedui advantage.
2, good corrosion resistance: in particular, resistance to alkali corrosion, this can not be compared to other FRP composite materials, in some acid, alkali and salt, and hot and humid environment, such as port terminal project of strengthening and protection, the Kevlar fiber is the best option.
3, Impact resistance: Kevlar fiber modulus of elasticity is 110Gpa, ductility particularly good, it is an extension of the rate of 2.0%, so in some very strict requirements on the impact of the structure, such as the main channel of the bridge piers and other works are the most good choice.
4, dynamic loading, fatigue performance is good: although the tensile strength of carbon fiber is very high, but it is a brittle material, can withstand long-term static load, dynamic load to bear if the long-term strength will have a lot of damage. Aramid fiber toughness good, and the corresponding very good resistance to fatigue.
5, shear capacity: shear strength of aramid fiber is the strongest of all FRP materials.
6 easy construction: Kevlar is an organic material, and resin infiltration is very good. Mainly the following steps, surface treatment - brushing rubber bottom - bottom impregnated resin - paste Kevlar fabric - the outer layer impregnated with resin - Surface Protection. Operation is very simple, does not require large hoisting machinery and equipment, fillet radius of the processing of requests R = 10mm
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