Carbon fiber tube, also known as carbon fiber tube, also known as carbon tube, carbon fiber tube, is made of carbon fiber composite pre immersed in styrene based polyester resin by heating, curing, pultrusion (twisting). In the manufacturing process, various profiles can be produced through different molds, such as carbon fiber circular tubes of different specifications, square tubes of different specifications, sheets of different specifications, and other profiles: 3K can also be wrapped for surface packaging and beautification during the manufacturing process.
Any application where weight is crucial, switching to carbon fiber will be beneficial. The following are some of the most common uses of carbon fiber tubes:
Aerospace beams and spars
Formula 1 structural components
Arrow shafts
Bicycle tubes
Kayak paddles
Hollow composite structures can be difficult to manufacture. This is because pressure needs to be applied to both in internal and the external side of the laminate. More often than not, carbon fiber tube with a continuous profile are manufactured by either pultrusion or filament winding.
Pultruded tubes are by far the most cost-effective method of manufacturing continuous composite profiles. When pultruding a hollow tube, a "floating mandrel" is required. A chromed steel rod is firmly affixed in place on the side of the die where the raw material enters. The mounting hardware is far enough away that does not interfere with the impregnated fiber as it enters the die.
The space between the mandrel and the die will determine the wall thickness of the carbon fiber tube.
Pultruding carbon fiber tubes allow for the production of tubing of virtually any length. Transportation of the tube is generally the restriction on length. In pultrusion, most of the fiber will run the direction of the tube. This creates a tube with a tremendous about of stiffness, but not much hoop strength, or cross-directional strength.
In the application of carbon fiber products, carbon fiber tube and carbon fiber board appear more frequently. Carbon fiber tubes can replace the application of metal tubes in many fields. In this paper, we will give you an interpretation of the advantages and disadvantages of carbon fiber tube to help you have a better understanding of carbon fiber tube.
1. Light weight is a very important advantage of carbon fiber tube. The density of carbon fiber itself is relatively low. The density of carbon fiber tube produced and processed is about 1.8g/cm3. Compared with the common steel tube, it is only a quarter of its weight. This makes the advantage of carbon fiber tube particularly obvious in the application of many weight reduction products, which requires a very strong advantage.
2. The tensile strength is high, and the tensile strength of carbon fiber tubes is also very high. In the production of carbon fiber tubes, due to different processes, the tensile strength of carbon fiber tubes produced is different, but no matter how low, there will be 40million psi, usually about 100million psi. The tensile strength of steel tubes can only reach 29million psi, which also makes the tensile strength of carbon fiber tubes reach more than three times that of steel.
3.Shear strength. Shear strength refers to the strength performance of the transverse force received. The shear strength can be changed by different layers of carbon fiber pipes. Generally, the shear strength of carbon fiber pipes can reach 8gpa, which is also much higher than that of traditional steel pipes.
4.Convenient construction: it occupies less space, does not need large machines and tools, does not need wet operation, does not need hot work, does not need on-site fixed facilities, and has high construction efficiency.
5.High stability. Compared with metal pipes, carbon fiber pipes have better corrosion resistance and strong aging resistance, which makes the performance stability of pipes very high and their service life longer, including better stability at high and low temperatures, and also have very good performance in some bad environments.
1. The price is high. Compared with metal tubes, carbon fiber tubes are more expensive. In addition to the cost of raw materials, the production and processing process of carbon fiber tubes requires a lot of labor costs, so the price will be much higher.
2. The performance of carbon fiber tubes is affected by raw materials and production processes. At present, carbon fiber prepregs are mostly used for the production of carbon fiber tubes, and the ratio of carbon fiber and resin in carbon fiber prepregs is particularly critical. At the same time, different production processes should be selected for different pipes, such as carbon fiber square tubes and carbon fiber rectangular tubes, which should be molded, while carbon fiber round tubes are mostly molded by hot pressing cans.
3. Carbon fiber can withstand a high temperature of thousands of degrees, but because it needs to be mixed with resin in actual production, and resin is a non high temperature resistant material, normal carbon fiber tube can withstand a temperature of about 300 ℃. In order to open up more application markets, thermoplastic carbon fiber prepregs are being actively developed.
