用拉曼光谱研究T800级碳纤维的均质化程度

提出了一种用于拉曼光谱测试的碳纤维截面和剖面样品的制备方法,采用拉曼光谱分别对国产JHT55、P278F和日本东丽T800S碳纤维的截面和剖面做成像扫描,通过比较碳纤维在各个维度上的石墨化程度,系统分析了其径向、轴向以及赤道方向的均一化程度。结果表明,3种T800级碳纤维均存在皮芯结构,轴向、赤道方向也有一定程度的不均匀性,东丽T800S整体的均一化程度远优于两种国产碳纤维。高度均质化是东丽T800S性能优于国产T800级碳纤维的重要原因。

The Homogenization Degree of T800 Carbon Fiber Studied By Raman Spectroscopy

In this study, the method of preparing the transversal and longitudinal sections of carbon fiber used for Raman Scattering Spectrum Measurement was proposed. Raman Mapping was performed on the transversal and longitudinal sections of three T800 carbon fibers, domestic JHT55, P278F and Toray T800S. By comparing the Graphitization Degrees (GD), the homogeneity distributions of the samples in radial and axial directions and along the equator were discussed. The result shows that three T800 carbon fibers all have skin-core structures, but their homogeneities are different. The Toray T800S carbon fiber has the highest homogeneity, which indicates an important factor that leads to a better performance than the domestic ones in their application fields.