Carbon fiber has various excellent properties of elemental carbon, such as small specific gravity, excellent heat resistance, small thermal expansion coefficient, large thermal conductivity, good corrosion resistance and electrical conductivity. At the same time, it has the flexibility of fiber, can be woven processing and winding molding. The most excellent performance of carbon fiber is the specific strength and specific modulus more than the general reinforcement fiber, it and the composite formed by resin specific strength and specific modulus than steel and aluminum alloy is about 3 times higher. Tubes made of carbon fiber composite materials have been used in many fields, which can significantly reduce weight, increase payload, and improve performance. They are important structural materials in the aerospace industry.

1. Aerospace

Because of the advantages of lightweight, high rigidity, high strength, stable size, and good thermal conductivity, carbon fiber composite materials have been applied to satellite structures, solar panels, and antennas for a long time. Today, most of the solar cells deployed on satellites are made of carbon fiber composites, as are some of the more critical components in space stations and shuttle systems.

Carbon fiber tube is also very good in the application of UAVs and can be applied to different body parts of UAVs in practical application, such as arm, frame, etc. Compared with aluminum alloy, the application of carbon fiber tubes in UAVs can reduce weight by about 30%, which can improve the payload capacity and endurance of UAVs. The advantages of high tensile strength, corrosion resistance, and good seismic effect of carbon fiber tube ensure the life of UAV effectively.

2. Mechanical equipment

The end pickup is a fixture used for the transmission process in the stamping production line. It is installed on the loading and unloading robot of the press and drives the end pickup to carry the workpiece through the track teaching. Among many new materials, carbon fiber composite materials are the most popular.

The proportion of carbon fiber composite material is less than 1/4 of steel, but its strength is several times that of steel. The robot end pickup made of carbon fiber composite material can reduce the shaking and its own burden when handling automobile parts, and its stability can be greatly improved.

3, military industry

Carbon fiber is qualitative light, high strength, high modulus, corrosion resistance, fatigue resistance, high-temperature resistance, thermal conductivity, good heat dissipation, and the characteristics of the small thermal expansion coefficient, carbon fiber, and its composite materials are widely used in the rocket, missile, military aircraft, military areas, such as individual protection and increasing dosage, improves the performance of the military equipment enhances unceasingly. Carbon fiber and its composite materials have become an important strategic material for the development of modern defense weapons and equipment.

In military rockets and missiles, the excellent performance of CFRP has also been well applied and developed, such as "Pegasus", "Delta" carrier rocket, "Trident ⅱ (D5)", "Dwarf" missile and so on. The U.S. strategic missile MX ICBM and The Russian strategic missile Poplar M are also equipped with advanced composite material canisters

4. Sporting goods

Most of the traditional sports goods are made of wood, but the mechanical properties of carbon fiber-reinforced composite materials are much higher than wood. Its specific strength and modulus are 4 times and 3 times of Chinese fir, 3.4 times and 4.4 times of Chinese hutong respectively. As a result, it is widely used in sporting goods, accounting for almost 40% of the world's carbon fiber consumption. In the field of sports goods, carbon fiber pipes are mainly used in the following aspects: golf clubs, fishing rods, tennis rackets, badminton bats, hockey sticks, bows and arrows, sailing masts, and so on.

Taking the tennis racket as an example, the tennis racket made of carbon fiber composite material is light and firm, with large rigidity and small strain, which can reduce the deviation degree when the ball contacts with the racket. At the same time, CFRP has good damping, which can prolong the contact time between gut and ball, so that the tennis ball can obtain greater acceleration. For example, the contact time of the wooden racket is 4.33 ms, steel is 4.09 ms, and CFRP is 4.66 ms. The corresponding initial speeds of the ball are 1.38 km/h, 149.6 km/h, and 157.4 km/h, respectively.

In addition to the above fields, carbon fiber composite materials also appear in rail transit, wind power, medical equipment, and other fields, is widely used, with the continuous breakthroughs in the manufacturing and subsequent processing technology of carbon fiber raw materials, the price of carbon fiber raw materials is also expected to become more user-friendly. 

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