Carbon fiber, according to the performance level is divided into: T300, T700, T800, the higher the grade, the higher the strength.
"k", it represents the specifications of the carbon fiber cloth, carbon fiber cloth is woven by a bundle of carbon fiber filaments, 1k represents the carbon fiber cloth which a bundle of fiber filaments contained in the 1,000 filaments, then 3k on behalf of a bundle of 3,000 carbon fiber filaments contained in the bundle, and so on.
From the cost-effective point of view carbon fiber bicycle, currently using 12K carbon fiber more, 3K also used, but relatively few. The greater the number of K of the same model, the lower the price, the higher the strength, the strength per unit area is the same.
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Main Products of Carbon Fiber p>The main products of carbon fiber
Carbon fiber is used in the aerospace field, the national defense military field and sporting goods, in addition to automotive components, wind power blades, building reinforcement materials, reinforced plastics, drilling platforms and other carbon fiber is being used in the new market. In addition, it is also used in pressure vessels, medical equipment, marine development, new energy and other fields.
Other applications of carbon fiber include the production of composite materials for machine parts, household appliances and semiconductor-related equipment, which can be used to play a role in strengthening, anti-static and electromagnetic wave protection. In addition, the use of carbon fiber in X-ray instruments can reduce human exposure to X-rays.
1, pressure vessels
Pressure vessels made of carbon fiber composite materials, mainly used in automobiles, compressed natural gas tanks, but also used in the fire fighters on the fixed breathing apparatus. CNG tanks from the United States and European countries, Japan and other Asian countries have also shown great interest in this application.
2, wind turbine blades?
The world's wind turbine generator rated power is getting bigger and bigger, and the size of its corresponding wind turbine blades is also getting bigger and bigger. In order to reduce the deformation of the blade, in the main ride parts such as bearings and some parts of the blade using carbon fiber to supplement its stiffness. The total installed capacity of wind turbines in China during the 'Tenth Five-Year Plan' period has reached 1.5GW, thus the application of carbon fiber in wind turbine blades is promising.
Carbon fiber in the wind, nuclear and solar energy and other new energy fields also has a broad application prospects. When the wind turbine power more than 3MW, blade length of more than 40 meters, the performance of traditional glass fiber composite materials has tended to limit the use of carbon fiber composite materials manufacturing blade is a necessary choice. Only carbon fiber can both reduce the weight of the blade, but also to meet the requirements of strength and stiffness.
3, carbon fiber cloth
Carbon fiber cloth, also known as carbon fiber cloth, carbon fiber cloth, carbon cloth, carbon fiber fabric, carbon fiber tape, carbon fiber sheet (pre-preg) and so on. Carbon fiber cloth is a unidirectional carbon fiber product, usually woven with 12K carbon fiber yarn. The lightest weight is 1K carbon cloth, China carbon fiber frame bicycle, triangle basically use 3K carbon cloth.
1K carbon fiber tubing due to the grade from the carbon filament, the composition of the resin, the density of the carbon cloth, molding pressure temperature and so on process is very strict, 1K carbon cloth price is 3 times that of 3K carbon cloth. Available in two thicknesses: 0.111mm (200g) and 0.167mm (300g).
Carbon fiber cloth has high strength, low density, thin thickness, and basically does not increase the self-weight of the reinforced member and cross-section size. Carbon fiber is widely used in buildings bridges tunnels and other various structural types, structural shape of the reinforcement repair and seismic reinforcement and nodes of the structural reinforcement.
4, carbon fiber composite pumping rod
Related data show that, to 2008, 8% to 10% renewal or new pumping rods with carbon fiber composite pumping rod to replace, *** need for carbon fiber 320 to 420 t. Prediction of 2010, if the amount of replacement by 15%, then the carbon fiber consumption of up to 624 tons.? [32]?
1994 to 2002 or so, carbon fiber to make the national grid cable use cases in many places. At the same time, carbon fiber heating products, carbon fiber heating products, carbon fiber far infrared is also more and more attention.
Carbon fiber has many excellent properties, carbon fiber axial strength and high modulus, low density, high specific performance, no creep, non-oxidizing environment resistant to ultra-high temperatures, good fatigue resistance, specific heat and electrical conductivity between non-metals and metals, small coefficient of thermal expansion and anisotropy, good corrosion resistance, good X-ray transmission. Good electrical and thermal conductivity, good electromagnetic shielding, etc..
Carbon fiber and traditional glass fiber, Young's modulus is more than three times; it is compared with Kevlar fiber, Young's modulus is about two times, in organic solvents, acids, alkalis do not dissolve and do not swell, corrosion resistance is outstanding.
Baidu Encyclopedia - Carbon Fiber Bicycle