711 JUTE紡績糸強化PLA複合材料の成形と物性(OS1-1 生分解性ポリ乳酸とポリ乳酸系複合材料の変形と破壊)

概要

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Continuous natural fiber reinforced thermoplastic materials are expected to replace inorganic fiber reinforced thermosetting materials. However, natural fiber itself has low strength and in the process of fabricating the composite, it is difficult to impregnate the thermoplastic resin into reinforcement fiber. In our previous studies, it have been clarified that a spun natural yam had high strength. Moreover intermediate material, which allows highly impregnation during molding, can be obtained for fabricating continuous fiber reinforced thermoplastic composite by aligning resin fiber alongside reinforcing fiber with braiding technique. This intermediate material has been called "Micro-braided-yam". In this investigation, completely naturally-derived micro-braided-yarn was fabricated by using thermoplastic biodegradable resin fiber (PLA) as the resin fiber and jute spun yam as the reinforcement. Using the micro-braided-yam, continuous natural fiber reinforced biodegradable resin composite plates can be molded by hot press molding with various molding conditions. Observation of impregnation state and evaluation of mechanical properties were performed, and consequently, the relationship between the molding conditions and the mechanical properties of the composite was clarified.
一般社団法人日本機械学会の論文
2007-10-24