Novel technology and method for preparing thermoplastic prepreg from continuous fiber

The invention provides a novel method and technology for preparing thermoplastic prepreg from continuous fiber. The method comprises the steps that firstly, fiber fabric is subjected to primary guiding and dispersing through grinding frames and sand rollers; secondly, the fiber fabric enters a dispersing device, and in the dispersing device, rollers and an airflow fiber spreading technology enablethe fiber to be fully dispersed; thirdly, the fiber fabric enters a heat treatment device, original resin and residual additives in the fiber are removed through microwave heating; fourthly, a dipping device enables resin powder to adhere to the surface of the fiber; fifthly, colloid is melted through a high-power-infrared heating device; and sixthly, induction heating compaction, compression roller reshaping, cooling sizing and winding are performed in sequence to obtain the continuous fiber thermoplastic prepreg. According to the method and technology, three heating modes including microwave heating, high-power-inf