Is carbon fiber a composite?

Carbon fiber is a composite material. Because carbon fiber is a new generation of reinforced fiber, it has both the inherent characteristics of carbon material and the softness and machinability of textile fiber, so it is a composite material. Introduction: 1. Carbon fiber: Carbon fiber (CF) is a new fiber material with high strength and high modulus, and its carbon content is over 95%. It is a microcrystalline graphite material obtained by stacking, carbonizing and graphitizing organic fibers such as flaky graphite microcrystals along the fiber axis. Carbon fiber is "soft outside and rigid inside", which is lighter than aluminum, but stronger than steel, and has the characteristics of corrosion resistance and high modulus. It is an important material for national defense, military industry and civil use. It not only has the inherent characteristics of carbon materials, but also has the softness and machinability of textile fibers, and is a new generation of reinforced fibers. 2. Composite materials: Composite materials are materials with new properties that are compounded by two or more materials with different properties through physical or chemical methods. All kinds of materials complement each other in performance, resulting in synergistic effect, which makes the comprehensive performance of composite materials superior to raw materials and meets various requirements. The matrix materials of composite materials can be divided into two categories: metal and nonmetal. Commonly used metal substrates are aluminum, magnesium, copper, titanium and their alloys. Non-metallic matrix mainly includes synthetic resin, rubber, ceramics, graphite, carbon and so on. The reinforcing materials mainly include glass fiber, carbon fiber, boron fiber, aramid fiber, silicon carbide fiber, asbestos fiber, whisker, metal wire and hard particles.