ABSTRACT

Recently, various physical surface treatment methods have been studied to improve the adhesive bonding strengths of fiber-reinforced thermoplastic resins. Excellent surface treatment methods in terms of treatment time, effective irradiation distance, and strength reliability are required. This study was carried out to evaluate the effect of vacuum–ultraviolet (VUV) irradiation on the bonding strength of a carbon-fiber-reinforced polyphenylene sulfide under a nitrogen atmosphere. Various surface treatment parameters, such as the treatment time, irradiation distance, atmosphere, and standing time after the surface treatment, were changed. The adhesive strength, evaluated through a compression shear test, was improved by the VUV irradiation treatment. Additionally, the joint surface fracture changed from an interface fracture to a cohesive fracture of the adhesive or adherend. Furthermore, the joint strength was improved even when the irradiation distance was increased. Furthermore, oxygen-containing functional groups were introduced at the sample surface upon the VUV treatment, according to X-ray photoelectron spectra.

摘要

最近，已经研究了各种物理表面处理方法以提高纤维增强热塑性树脂的粘合强度。需要在处理时间、有效照射距离和强度可靠性方面具有出色的表面处理方法。本研究旨在评估真空紫外 (VUV) 辐照对碳纤维增强聚苯硫醚在氮气氛下的粘合强度的影响。改变各种表面处理参数，如处理时间、照射距离、气氛和表面处理后的静置时间。通过压缩剪切试验评估的粘合强度通过 VUV 照射处理得到改善。此外，接合面断裂由界面断裂转变为胶粘剂或被粘物的内聚断裂。此外，即使增加照射距离，也提高了接合强度。此外，根据 X 射线光电子能谱，在 VUV 处理后，在样品表面引入了含氧官能团。