April 27, 2026
(1) Good corrosion resistance: FRP is an excellent corrosion-resistant material, exhibiting good resistance to the atmosphere, water, general concentrations of acids and alkalis, salts, and various oils and solvents. It has been widely used in all aspects of chemical preservation and is replacing carbon steel, stainless steel, wood, non-ferrous metals, and other materials.
(2) Light weight and high strength: The relative density of FRP is between 1.5 and 2.0, only 1/4 to 1/5 that of carbon steel, yet its tensile strength approaches or even exceeds that of carbon steel, and its strength can compare with that of advanced alloy steel. It is widely used in aerospace, high-pressure vessels, and other products that require weight reduction.
(3) Good electrical properties: FRP is an excellent insulating material for manufacturing insulation components, maintaining good performance even at high frequencies.
(4) Good thermal performance: FRP has low thermal conductivity, at room temperature only 1.25–1.67 KJ, which is 1/100 to 1/1000 that of metal, making it an outstanding thermal insulation material. It is ideal for thermal protection and ablative materials under ultra-high temperature conditions.
(5) Excellent process performance: Molding processes can be selected according to product shape, allowing simple geometries to be produced.
(6) Good designability: Materials can be fully selected according to needs to meet product performance and structural requirements.
(7) Low modulus of elasticity: The modulus of elasticity of FRP is about twice that of wood but ten times smaller than that of steel. Therefore, FRP often feels rigid and easily deformable in product structures. Solutions include thin-shell structures, sandwich constructions, or the use of high-modulus fibers or stiffening ribs.
(8) Poor long-term temperature resistance: General FRP cannot be used at high temperatures for extended periods; for general-purpose polyester resin FRP, strength decreases significantly above 50°C.
(9) Aging phenomenon: Under the action of ultraviolet rays, wind, rain, snow, chemical media, and mechanical stress, performance degradation readily occurs.
(10) Low interlaminar shear strength: Interlaminar shear strength is borne by the resin and is therefore relatively low. This can be improved by selecting appropriate processes, using coupling agents, and enhancing interlayer adhesion; product design should also avoid shear between layers as much as possible.
