轨道交通用磁屏蔽强化碳纤维拉挤材料性能研究

Study on Properties of Magnetic Shielding Reinforced Carbon Fiber Pultrusion Materials for Rail Transit

摘要: 本文从轨道交通用碳纤维复合材料需求入手，分析热压罐成型工艺、模压成型工艺的不足，进而论述拉挤工艺制作轨道车辆用碳纤维复合材料的优势，为了解决碳纤维复合材料磁屏蔽性能不佳的问题，对铺层结构进行设计，通过环氧树脂试验选型，成功制作出磁屏蔽强化碳纤维拉挤板材，在磁场下，该材料实现30 dB的屏蔽效果，保证轨道车辆运行时人员安全和设备正常工作。

Abstract: Starting with the demand of carbon fiber composites for rail transit, this paper analyzes the shortcomings of hot pressing tank forming process and molding process, and then discusses the advantages of pultrusion process in making carbon fiber composites for rail vehicles. In order to solve the problem of poor magnetic shielding performance of carbon fiber composites, the ply structure is designed, and the magnetic shielding reinforced carbon fiber pultrusion plate is successfully made through epoxy resin test and selection. Under the magnetic field, the material can achieve 30 dB shielding effect and ensure the safety of personnel and normal operation of equipment during the operation of rail vehicles.