The invention relates to a large-tow long carbon fiber thermoplastic composite material and a preparation method thereof, belonging to the technical field of carbon fiber material preparation. Large-tow carbon fibers are drawn by upper pressure rollers and lower support rollers, entering the mold from the inlet and leaving from the outlet. Resin melt enters the mold from the upper part of the mold cavity and immerses the large-tow carbon fibers from top to bottom under gravity, realizing full contact and good impregnation between thermoplastic resin melt and large-tow carbon fibers. In addition, the number of upper and lower roller groups is designed to be more than three, and the diameters of upper pressure rollers are designed as a series of different sizes. The pressure can be adjusted as required to change the impregnation effect between thermoplastic resin melt and large-tow carbon fibers. The thermoplastic composite fiber material provided by the invention adopts thermoplastic material hybridized with inorganic nanoparticles and resin, featuring good impregnation effect on carbon fibers and high physical strength of carbon fibers.

지역번호: CN

신청 번호: CN202010518254.8