Why is the strength of carbon fiber sheets lower than that of carbon fiber fabrics?
From a performance perspective, the properties of carbon fiber sheets are inferior to those of carbon fiber fabrics, and both are lower than the strength of the raw carbon fiber material. This can be confusing for many people. Recently, when I received inquiries, I was also asked this question. So, what is the reason for this?
First of all, both carbon fiber sheets and carbon fiber fabrics are products made from carbon fiber composites. When we refer to carbon fiber fabric, it is similar to a layer of woven material, akin to carbon fiber prepreg. Carbon fiber sheets, on the other hand, are products formed by layering carbon fiber prepreg and curing them into shape. There are also processes where carbon fibers are layered first and then impregnated with resin.
In actual tests, it has been found that the strength of carbon fiber sheets is lower than that of raw carbon fibers and carbon fiber fabrics. However, this situation tends to occur in thinner carbon fiber sheets. Both carbon fiber sheets and carbon fiber fabrics can be used for reinforcement. At the same strength level, the tensile strength of carbon fiber sheets is around 2400 MPa, while the tensile strength of carbon fiber fabrics can reach up to 3400 MPa. The tensile strength of T300 carbon fiber raw material can reach up to 5000 MPa, which may lead to the perception that the strength of carbon fiber sheets is lower than that of carbon fiber fabrics. This actually relates to their production m
