酚酞型聚芳醚酮与硅烷偶联剂协同改性CF/PPS复合材料

Synergistic modification of CF/PPS composites by phenolphthalein-type polyaryletherketone and silane coupling agent

本文使用不同浓度的KH570溶液和0.5wt%的PEK-C溶液依次对碳纤维进行改性处理,并通过模压成型制备了CF/PPS复合材料,使用X射线光电子能谱仪(XPS)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)、万能材料试验机等手段表征改性后的CF/PPS复合材料。结果表明,使用2wt%的KH570溶液和0.5wt%的PEK-C溶液依次处理碳纤维后,复合材料的界面性能和弯曲性能大幅提升,相较于未经改性处理的CF/PPS复合材料,其弯曲强度由709 MPa提高至953 MPa,提升约34.4%,ILSS则由23.8 MPa提高至53.3 MPa,提升约123.9%。

In this paper,different concentrations of KH570 solution and 0.5wt%PEK-C solution were used to modify CF in turn,and CF/PPS composites were prepared by compression molding.The CF/PPS composites were characterized by means of X-ray photoelectron spectroscopy(XPS),scanning electron microscope(SEM),X-ray diffractometer(XRD),and universal material testing machine.The results show that after sequentially treating CF with 2wt%KH570 solution and 0.5wt%PEK-C solution,the interfacial properties and bending properties of the composites are significantly improved.Compared with the unmodified CF/PPS composites,its bending strength increased from 709 MPa to 953 MPa,an increase of about 34.4%,and the ILSS increased from 23.8 MPa to 53.3 MPa,an increase of about 123.9%.