FRP is a composite material. If you look at its own composite structure, you can also regard FRP as a structure.
FRP has the following characteristics:
(1) Lightweight and high strength: The relative density is between 1.5 and 2.0, only 1/4 to 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 comparable to that of high-grade alloy steel, if comparing. Therefore, it has excellent results in aviation, rockets, space vehicles, high-pressure vessels, and other products that need to reduce their own weight. The tensile, flexural and compressive strengths of some epoxy FRP can reach more than 400Mpa. Note: The specific strength is the strength divided by the density.
(2) Good corrosion resistance: FRP is a good corrosion-resistant material, and it has good resistance to atmosphere, water and general concentrations of acids, alkalis, salts, and a variety of oils and solvents. It has been applied to all aspects of chemical anti-corrosion, and is replacing carbon steel, stainless steel, wood, non-ferrous metals and so on.
(3) Good electrical performance: It is an excellent insulating material, used to make insulators.It can still maintain good dielectric properties at high frequencies.It has good microwave permeability and has been widely used in radomes.
(4) Good thermal performance: FRP has low thermal conductivity, 1.25~1.67kJ/(m·h·K) at room temperature, which is only 1/100~1/1000 of metal, and is an excellent thermal insulation material. It is an ideal thermal protection and ablation-resistant material under instantaneous ultra-high temperature conditions, and can protect the spacecraft from being washed by high-speed airflow at a temperature above 2000°C. (5) Good designability: ① According to needs, various structural products can be flexibly designed to meet the requirements of use, and the product can have a good integrity. ② Materials can be fully selected to meet the performance of the product, such as: corrosion resistance, instantaneous high temperature resistance, special high strength in a certain direction of the product, and good dielectric properties can be designed.
(6) Excellent manufacturability: ① The molding process can be flexibly selected according to the shape, technical requirements, use and quantity of the product. ② The process is simple, it can be formed at one time, and the economic effect is outstanding, especially for products with complex shapes and small quantities that are not easy to form, and its process superiority is more prominent.
FRP is a composite material. If you look at its own composite structure, you can also regard FRP as a structure.
FRP has the following characteristics:
(1) Lightweight and high strength: The relative density is between 1.5 and 2.0, only 1/4 to 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 comparable to that of high-grade alloy steel, if comparing. Therefore, it has excellent results in aviation, rockets, space vehicles, high-pressure vessels, and other products that need to reduce their own weight. The tensile, flexural and compressive strengths of some epoxy FRP can reach more than 400Mpa. Note: The specific strength is the strength divided by the density.
(2) Good corrosion resistance: FRP is a good corrosion-resistant material, and it has good resistance to atmosphere, water and general concentrations of acids, alkalis, salts, and a variety of oils and solvents. It has been applied to all aspects of chemical anti-corrosion, and is replacing carbon steel, stainless steel, wood, non-ferrous metals and so on.
(3) Good electrical performance: It is an excellent insulating material, used to make insulators.It can still maintain good dielectric properties at high frequencies.It has good microwave permeability and has been widely used in radomes.
(4) Good thermal performance: FRP has low thermal conductivity, 1.25~1.67kJ/(m·h·K) at room temperature, which is only 1/100~1/1000 of metal, and is an excellent thermal insulation material. It is an ideal thermal protection and ablation-resistant material under instantaneous ultra-high temperature conditions, and can protect the spacecraft from being washed by high-speed airflow at a temperature above 2000°C. (5) Good designability: ① According to needs, various structural products can be flexibly designed to meet the requirements of use, and the product can have a good integrity. ② Materials can be fully selected to meet the performance of the product, such as: corrosion resistance, instantaneous high temperature resistance, special high strength in a certain direction of the product, and good dielectric properties can be designed.
(6) Excellent manufacturability: ① The molding process can be flexibly selected according to the shape, technical requirements, use and quantity of the product. ② The process is simple, it can be formed at one time, and the economic effect is outstanding, especially for products with complex shapes and small quantities that are not easy to form, and its process superiority is more prominent.
