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Material ContrastMaterial Comparison of Carbon Fiber Composites
Carbon fiber composite materials are mainly used in automobiles. Carbon fiber is a new type of fiber material with high strength and high modulus fibers containing more than 95% carbon content. It is made of flaky graphite crystallites and other organic fibers stacked along the axial direction of the fiber obtained by carbonization and graphitization obtained microcrystalline graphite material. Carbon fiber is a new material with excellent mechanical properties. Its specific gravity is less than 1/4 of that of steel. The tensile strength of carbon fiber resin composite materials is generally above 3500Mpa, which is 7 to 9 times that of steel, and the tensile modulus of elasticity is 23000 ~ 43000Mpa is also higher than steel. Next Xiaobian together to understand the performance and disadvantages of carbon fiber composites.
Carbon fiber composite material
Carbon fiber composite material
Carbon fiber composite materials performance
Carbon fiber reinforced composites, unlike other FRP composites that use conventional fibers such as glass fibers or aramid fibers, offer excellent properties of CFRP composites including: Light weight - Conventional glass fiber reinforced composites use continuous glass fibers , Which is present in an amount of 70% (weight glass per total weight) and typically has a density of 0.065 pounds per cubic inch.
High Strength - Despite its light weight, the CFRP composite has higher strength and greater hardness per unit weight of the CFRP composite compared to fiberglass composites. When compared with metallic materials, this advantage is even more prominent. For example, experience tells us that compared to steel, CFRP material weighs only 1/5 of steel under equal strength. Can imagine why all car manufacturers are studying the use of carbon fiber instead of steel, thereby enhancing their product performance.
When CFRP composites are compared with one of the lightest metals of aluminum, the equivalent weight of aluminum, based on the basic assumption, is about 1.5 times the weight of carbon fiber. Of course, there are many other variables in the experiment, which may affect the comparison results. For example, the grade and quality of the materials are different. The compounding process, the production process, the fiber structure and the quality also need to be taken into account.
Carbon fiber composite material
Disadvantages of carbon fiber composites
High cost - Why carbon fiber is not widely used in production despite the excellent properties of CFRP composites? At present, CFRP composite production costs are too high. According to the current market conditions (supply and demand), the type of carbon fiber (space VS commercial grade), fiber bundles of different sizes, the price of fiber is also Ruoyun mud. Price per pound of carbon fiber raw materials, up to 5-25 times the price of glass fiber range. The high cost of CFRP materials is even more pronounced when compared to steel.
Conductivity - This can be both an advantage of a carbon fiber composite and a defect in practical use. Carbon fiber is extremely conductive and glass fiber is insulated. Many products use fiberglass instead of carbon fiber or metal because of their stringent insulation requirements.
In the production of utilities, many products require the use of fiberglass. For example, the production of ladders uses fiberglass as a ladder because the chances of electric shock are much lower when fiberglass ladders are in contact with power lines. The carbon fiber ladder is extremely conductive, the consequences are unthinkable.
Despite the high cost of carbon fiber composites, along with advances in science and technology, the emergence of more cost-effective products is just around the corner. Perhaps a lifetime, we will be expected to witness the wide range of applications of high-performance carbon fiber products in the consumer market, industrial production and automotive manufacturing.
