Low Altitude Economy Brings New Growth Poles for Carbon Fiber 2

Carbon Fiber Composite Materials: Classified by Matrix, Different Matrices have different uses

Carbon fiber composite materials refer to structural or functional materials made by compounding materials such as resin, metal, ceramic, and rubber as the matrix and carbon fiber as the reinforcing material. According to the different matrix materials, carbon fiber composite materials can be divided into resin based composite materials, metal based composite materials, ceramic based composite materiasl, and rubber based composite materials. Resin based composite materials are mainly used in fields such as consgtruction, chemistry, transportation, healthcare, and aerospace; Metal based composite materials are mainly used in fields such as aviation, aerospace, automotive, and sports equipment; Ceramic based composite materials are mainly used in high-temperature engine components and other fields; Rubber based composite materials are mainly used in fields such as pipes, wear-resistant lining wheels, and special seals.

Classification of Carbon Fibers: Classified by Tensile Strength and Elastic Modulus

The elsatic modulus refers to the degree of elasticity of a material under tension, and its value represents the ratio of the force required per unit length of material under tension to its cross-sectional area (expressed as M value). The larger the tensile modulus of elasticity, the stronger the material's resistance to stretching, that is, under external forces, the shape of the material is not easily changed and can withstand greater tensile forces, thus the better the tensile performance. Tensile strength refers to the maximum tensile stress that a sample can withstand in a tensile test, usually expressed in MPa (T value), until the sample fractures. The upgrading of domestic carbon fiber technology mainly focuses on the research and engineering appication of higher strength (such asT1100 grade) and higher modulus (such as M55 grade) carbon fiber preparation processes. 

Carbon Fiber Classification: Large Fiber Bundles Have Lower Costs, While Small Fiber Bundles have Better Performance

Carbon fiber can be divided into small fiber bundles and large fiber bundlesl based on the number of fibers. The mechanical properties and other indicators of small bundle carabon fiber have reached a high level, but the manufacturing process is difficult and the cost is high. Mainly used in high-tech fields such as aerospace and military indusgries, as well was high value-added product categories in sports equipment such as airplanes, missiles, rockets, satellites, fishing rods, golf clubs, and tennis rackets. On the contrary, the performance of large fiber bundles of carbon fibers is relatively low, but the preparation cost is also low, so they are usually used in basic industrial fields, incluing wind turbine blades, building reinforcement, automobiles, and hydrogen storage tanks. Compared to small fiber bundles, the main advantage of large fiber bundles is that they can significantly increase the single line production capacity of carbon fibers under the same proeduction conditions, thereby reducing production costs. Its layup efficiency in the preparation of composite materials is also higher, and production cost is reduced by more than 30%. This helps overcome the limitatioins of the high price of carbon fiber in appication fields, and lays the foundation for the wider application of carbon fiber composite materilas. After the cost of using large bundle carbon fiber as raw material is reduced, the processing cost of downstream production and processing of end products is also reduced, and the profitablility is improved. Therefore, the competitive advantage of the upstream and downstream industrial chain of large bundle carbon fiber lies in this.