| 摘要 |
The present invention provides a method for preparing a thermoplastic prepreg, which includes: laminating a thermoplastic resin film having a crystallization degree in a range of 1 to 20% on at least one surface of a matrix fiber; and heating the laminate to a higher temperature than a melting point of the thermoplastic resin film, then, pressing the same. The present invention may prepare a high quality thermoplastic prepreg by uniformly impregnating a matrix fiber with a thermoplastic resin, which is reusable since a small amount of thermoplastic resin film is used, has a short curing cycle in the formation, and involves no random modification in alignment of fibers in the matrix fiber due to a low crystallization degree of thermoplastic resin impregnated in the matrix fiber even at pressing, thereby increasing rigidity of a formed product and enabling reduction of thickness. The thermoplastic prepreg prepared by the above method includes the matrix fiber uniformly impregnated with the thermoplastic resin so as to have a low weight variation per unit area. |
