Abstract The tensile deformation process of carbon fiber reinforced plastics (CFRPs) was in situ observed by high-resolution transmission electron microscopy (TEM). CFRPs were prepared with sizing and unsizing treatment on the fiber surfaces. The microstructural evolution of crack propagation along fiber/resin interfaces and inside resin matrices was examined. Fine resin fragments remained on the fiber surfaces after fracture. From the differences in the shape of the residual resin fragments between the two types of CFRPs, the influence of the sizing treatment on fracture was quantitatively evaluated. We demonstrated a new method on the basis of in situ TEM to evaluate the microstructural fracture dynamics and the influence of the sizing treatment on fracture.

中文翻译：

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通过原位透射电子显微镜直接观察碳纤维增强塑料的微观结构断裂动力学

摘要 采用高分辨透射电子显微镜（TEM）对碳纤维增强塑料（CFRPs）的拉伸变形过程进行了原位观察。CFRPs 是在纤维表面上浆和退浆处理后制备的。研究了裂纹沿纤维/树脂界面和内部树脂基体传播的微观结构演变。断裂后，细小的树脂碎片留在纤维表面。从两种碳纤维复合材料残留树脂碎片形状的差异，定量评价施胶处理对断裂的影响。我们展示了一种基于原位 TEM 的新方法来评估微观结构断裂动力学和定径处理对断裂的影响。