Aramid chopped fiber has the following significant advantages:
High Strength and Lightweight: The strength of aramid chopped fiber is 5-6 times that of steel wire, the modulus is 2-3 times that of steel wire or glass fiber, and the toughness is 2 times that of steel wire, but its weight is only five times that of steel wire. About one-quarter12. This lightweight yet high-strength nature makes it useful in applications that require high-strength materials without adding weight.
Flame retardant: The limiting oxygen index of aramid chopped fiber is greater than 28, and it will not continue to burn when leaving the flame. Its flame retardant properties are determined by its own chemical structure. It is a permanently flame retardant fiber and will not reduce or lose its flame retardant properties due to use time and number of washings.
Heat resistance: Aramid chopped fiber has good thermal stability, can be used continuously under the condition of 205℃, can still maintain high strength under high temperature conditions greater than 205℃, and can be used under high temperature conditions. It will not melt or drip, and will only start carbonizing when the temperature is greater than 370°C.
Chemical stability: Aramid chopped fibers have excellent resistance to most chemicals, can withstand most high-concentration inorganic acids, and have good alkali resistance at room temperature.
Radiation resistance: Aramid chopped fibers can still maintain their strength under long-term irradiation. For example, under the irradiation of 1.2×10-2w/in2 ultraviolet rays and 1.72×108rads γ-rays, their strength still remains unchanged. Change .
Durability: Aramid chopped fiber has excellent friction resistance and chemical resistance. After 100 times of washing, the tearing strength of the fabric processed with it can still reach more than 85% of the original strength.
Application fields: Aramid chopped fibers are widely used in many fields. For example, in the field of aerospace, aramid fiber can be used to manufacture structural components of aircraft and spacecraft, such as cabin doors and windows, fairing body surfaces, etc. In the military field, aramid fiber is used to make bulletproof vests and helmets to improve protective performance while reducing weight. In addition, aramid fiber is also used in reinforcement materials in the construction field, rubber reinforcement, environmental protection and other fields.
