The differences between FRP and KFRP are as follows
FRP, fiber reinforced composite plastic, is the abbreviation of fiber reinforced polymer. FRP is often used as the central reinforcement of outdoor optical cables; Nowadays, leather cables are used more and more. In addition to FRP as the central reinforcement, leather cables also use KFRP as the central reinforcement.
FRP (glass fiber) has the following characteristics:
(1) Light weight and high strength
The relative density is between 1.5~2.0, which is only 1/4~1/5 of carbon steel, but the tensile strength is close to or even higher than that of carbon steel, and the specific strength can be compared with that of high-grade alloy steel. Therefore, it is effective in aviation, rockets, spacecraft, high-pressure vessels and other products that need to reduce self weight. The tensile, bending and compressive strength of some epoxy FRP can reach 400MPa.
(2) Good performance
FRP is a good corrosion-resistant material, which has good resistance to air, water, acids, alkalis, salts of general concentration, as well as a variety of oils and solvents. It has been applied to all aspects of chemical anticorrosion and is replacing carbon steel, stainless steel, wood, non-ferrous metals, etc.
(3) Good electrical performance
It is an excellent insulating material used to make insulators. It can still protect good dielectric property at high frequency. Microwave transmission is good, and it has been used in radar radome. wait.
KFRP (polyester aramid fiber)
Kevlar fiber reinforced fiber reinforced cable reinforcing core (KFRP) is a new type of high-performance non-metallic cable reinforcing core, which has been used in the access network.
Light weight and high strength
Aramid fiber reinforced optical cable reinforced core has low density and high strength, and its specific strength and specific modulus are far higher than steel wire and glass fiber reinforced optical cable reinforced core;
Low expansion
In a wide temperature range, the linear expansion coefficient of aramid fiber reinforced optical cable reinforcing core is smaller than that of steel wire and glass fiber reinforced optical cable reinforcing core;
Impact and fracture resistance
The reinforcing core of aramid fiber reinforced optical cable does not have the tensile strength ( 1700mpa), but also has impact resistance and fracture resistance. Even in the case of fracture, it can still maintain the tensile strength of about 1300mpa;
Good flexibility
The reinforced core of aramid fiber reinforced optical cable is soft and easy to bend. Its minimum bending diameter is 24 times of the diameter. The indoor optical cable has compact structure, beautiful appearance and excellent bending performance, which is especially suitable for wiring in complex indoor environment
