连续碳纤维增强聚醚醚酮板材的研究

Research on Continuous Carbon-Fiber-Reinforced PEEK Plate

采用自行设计、组装的连续纤维增强热塑性树脂基复合材料粉末浸渍试验装置制备了连续碳纤维(CF)增强聚醚醚酮(PEEK)预浸带,再将浸渍带通过热压模塑成型制备出层合板材。通过万能材料试验机、悬臂梁冲击试验机研究了纤维含量和浸渍带铺放方式对板材力学性能的影响。结果表明,在一定范围内CF/PEEK板材弯曲、冲击强度随着纤维含量的增大而提高,拉伸强度达1 124. 89 MPa,约是PEEK纯料的11倍,浸渍带以0°铺放压制的纤维含量为60%的板材力学性能相对最优。扫描电子显微镜(SEM)结果表明,纤维被树脂基体紧密包覆,纤维分散均匀、排列紧密、界面黏结性较好。

Continuous carbon fiber(CF) reinforced polyether ether ketone(PEEK) prepreg tapes were prepared by self-designed and assembled continuous fiber reinforced thermoplastic resin matrix composite powder impregnation experimental apparatus,and composite boards were prepared by hot-pressing molding with impregnating tapes.The effects of fiber content and the way of placing the impregnated strips on the mechanical properties of the plate were researched by universal material testing machine and cantilever beam impact testing machine.The results indicate that the bending and impact strength of CF/PEEK sheet could increase with the increase of fiber content within a certain range and the tensile strength increases to 1 124.89 MPa,which is approximately 11 times of pure PEEK.The mechanical properties of the plates with 60%fiber content in 0° dip tape are relatively optimal.The scanning electron microscope(SEM) results indicate that the fibers are tightly wrapped by resin matrix,the fibers are evenly dispersed and tightly arranged and the interface adhesion is better.