2022 Volume 78 Issue 9 Pages 143-152
The purpose of this study was to establish design guidelines for the application of intermediate materials for continuous fiber reinforced thermoplastic (c-FRTP) to the molding method using textile preforms, and to investigate the effects of different Partially-impregnated Commingled Yarn (PCY) fabrication processes on textile processability, impregnation properties, and mechanical properties. As a result, it was clarified that there were PCY manufacturing conditions that could achieve both textile processability, impregnation and mechanical properties of PCY using crystalline resin as the matrix used. By setting the temperature at which the amorphous component of the base resin flows predominantly without melting the crystalline component, i.e., immediately before the differential scanning calorimetry (DSC) curve drops, it was shown that PCY formed a multi-layered structure. On the other hand, by setting the temperature at which the crystalline component of the base resin melts, i.e. after the DSC curve drops, it was shown that PCY formed a single-layer structure. A PCY consists with a multi-layer structure had better impregnation properties and textile processability than that with a single-layer structure.
