Kevlar Rope is the material of aramid . In the modern industry, the application of Kevlar rope is common. To get high quality Kevlar rope, we must first understand the characteristics of it. Below are detailed introduction.
Kevlar Rope is a new type of high-tech synthetic fiber with super High strength, high modulus and high temperature resistance, acid and alkali resistance, light weight and other excellent properties, the strength is 5 to 6 times that of steel wire, the modulus is 2 to 3 times that of steel wire or glass fiber, and the toughness is twice that of steel wire. The weight is only about 1/5 of the wire, and at 560 degrees, it does not decompose and does not melt. It has good insulation and aging resistance and has a long life cycle. The discovery of aramid is considered to be a very important historical process in the material world.
Kevlar Main characteristics
1, good mechanical properties
Meta-aramid is a flexible polymer with higher breaking strength than ordinary polyester, cotton, nylon, etc. It has high elongation, soft handfeel and good spinnability, and can produce short fibers and filaments of different denier and length. In the general textile machinery, different yarns are woven into fabrics, non-woven fabrics, and after finishing, to meet the requirements of protective clothing in different fields.
2, excellent flame retardant, heat resistance
Meta-aramid has a Limiting Oxygen Index (LOI) greater than 28, so it does not continue to burn when it leaves the flame. The flame retardant properties of the Newstar ® meta-aramid are determined by its own chemical structure and are therefore a permanent flame retardant fiber that does not degrade or lose its flame retardant properties due to time of use and washing. Newstar ® meta-aramid has good thermal stability and can be used continuously at 205 ° C, and can maintain high strength even at temperatures above 205 ° C. Newstar ® meta-aramid has a high decomposition temperature, and will not melt or melt under high temperature conditions, and carbonization will start when the temperature is higher than 370 °C.
3. Stable chemical properties
The meta-aramid has excellent resistance to most chemicals, and is resistant to most high-concentration inorganic acids, and has good alkali resistance at room temperature.
4, radiation resistance
The meta-aramid has excellent radiation resistance. For example, under the long-term irradiation of 1.2×10-2 w/in2 ultraviolet rays and 1.72×108 rads of γ-rays, the intensity remains unchanged.
The excellent aramid resistance and chemical resistance of the meta-aramid can be more than 85% of the original strength after 100 times of washing with the fabric of the Newstar ®
The temperature resistance of the para-aramid is higher than that of the meta-aramid. The continuous use temperature range is -196 °C to 204 °C, and it does not decompose or melt at 560 °C. The most remarkable characteristic of para-aramid is high strength and high modulus, its strength is more than 25 g / den is 5 to 6 times of high-quality steel, 3 times of glass fiber, and 2 times of high-strength nylon industrial yarn; modulus is high quality 2 to 3 times of steel or glass fiber and 10 times of high-strength nylon industrial yarn.
Post time: Jan-08-2019