레진 인퓨전 공법을 이용한 철도차량용 고인성 복합재료 라미네이트 패널 제작 기술

초록

Recently, composite materials have been used for the purpose of weight reduction in railway vehicles, and application areas are gradually expanding. In addition, these materials are gaining market competitiveness through research on the resin infusion method, which can reduce production costs by about 20%. However, to satisfy the fire performance, phenolic resin is applied to the interior materials of railway vehicles; this addition increases brittleness and makes materials vulnerable to vibration or damage, so there is a high need for improving the resin toughness. Therefore, in this study, additives suitable for improving the toughness of existing phenolic resins were selected and laminated specimens were manufactured using the resin infusion method to evaluate whether mechanical performance and fire performance were satisfactory. As a result, we developed a phenolic resin with 27% improved toughness that satisfies all technical standards for railway vehicles; this material is expected to contribute to expansion of application of composite materials when applied to interior materials of railway vehicles.

키워드