FUNCTIONALITY-IMPARTING METHOD FOR PREPARING THERMOPLASTIC COMPOSITE MATERIAL, AND THERMOPLASTIC COMPOSITE MATERIAL PREPARED THEREBY

摘要

The present invention relates to a functionality-imparting method for preparing a thermoplastic composite material, and a thermoplastic composite material prepared thereby. The method for preparing a thermoplastic composite material comprises the steps of: (a) preparing a pre-impregnated thermoplastic composite material by impregnating reinforced fiber with low-viscosity thermoplastic resin; (b) pressing the pre-impregnated thermoplastic composite material to improve impregnation; (c) supplying high-viscosity thermoplastic resin to the pressed pre-impregnated thermoplastic composite material; (d) preparing an impregnated thermoplastic composite material having a desired weight fraction; and (e) cooling and winding the impregnated thermoplastic composite material. The method for preparing a thermoplastic composite material according to an embodiment can not only enable impregnation with high-viscosity thermoplastic resin without the cutting of reinforced fiber, but also even imparts functionality such as mechanical properties, flame retardancy, resistance to light, and the like, and thus a functionalized thermoplastic composite material which is highly impregnated with reinforced fiber can be prepared.