1. Classification based on carbon fiber length
According to the length classification of carbon fiber, short cut carbon fiber can be divided into short fiber and long fiber. Short fibers refer to carbon fibers with a length between 1mm and 100mm, while long fibers refer to carbon fibers with a length of 1mm or more. The difference between short fibers and long fibers is that short fibers have relatively lower strength and stiffness, but they have better service performance and formability.
2. Classification based on carbon fiber diameter
The diameter of carbon fibers also affects the classification of short cut carbon fibers. It can be divided into conventional carbon fiber and ultrafine carbon fiber. The diameter of conventional carbon fibers is between 5-10 μ m, while the diameter of ultrafine carbon fibers is between 1-3 μ m. Ultra fine carbon fibers have higher surface area and specific surface area, better chemical reactivity and reinforcement effect, and are widely used in fields such as artificial blood vessels, fuel cells, and electric separation membranes.
3. Classification based on carbon fiber orientation
The orientation of carbon fibers refers to the arrangement direction of carbon fibers in composite materials. It can generally be divided into two categories, namely unidirectional short cut carbon fiber and multi-directional short cut carbon fiber. Unidirectional short cut carbon fibers are arranged along a specific direction in composite materials, with high strength and stiffness; There are various ways to arrange multi-directional short cut carbon fibers, which are more suitable for applications in flexible bending parts.