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The carbon fiber we usually refer to is a vague general term, and the performance of different types of carbon fiber is actually very different.

So-called carbon fiber reinforced composites are actually made by arranging a large number of carbon fibers in a certain direction and then tightly bonding them together with resin and various adhesives. The density of fiber distribution directly affects the performance of the final material. Therefore, the fiber volume fraction is used to control the performance of carbon fiber materials. Simply put, the denser the fibers, the more fibers per unit volume, the higher the strength along the fiber direction; on the contrary, the less dense the fibers, the fewer fibers per unit volume, the lower the strength of the carbon fiber material.