リサイクル・FRTPの強度信頼性に係わる三層構造形成プロセスの構築

概要

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The purpose of this study is to evaluate the optimum forming condition which is related to improvement of strength reliability in recycling FRTP by the hybrid method involving experiment and simulation. The results are shown in the following. (1) In the PEEK material, by the observation results of the short shot samples (SSS), the reinforced fibers are randomly arranged by the generation of the vortex in melted resin flow, for this reason the anisotropy in the PEEK is little. On the other hand, in the MXD6 material, the tip of flow track in SSS shows the sharpened shape, and the fibers are arranged to one direction. Therefore, the strong anisotropy is found in MXD6 material. (2) X-ray reflection quantity of the PEEK material that has stable property for recycling don't change after recycling. In contrast, reflection quantity of the MXD6 material that shows the strength degradation after recyclmg, increases by conducting the recycling. (3) Since the melt viscosity of the PEEK material has been stabilized, the vortex flow occurs in metal mold, and the uniform three -layer structure is formed. In the meantime, the flow is biased to one direction in FRTP of which temperature dependence of melt viscosity is large like the MXD6 material. The stability of the melt viscosity of plastics on injection molding process is necessary in order to produce good FRTP for recycling.
一般社団法人日本機械学会の論文
2001-06-25