短碳纤维增强聚醚醚酮注塑成型进气道的性能

Properties of Short Carbon Fiber Reinforced Injection-moulded PEEK Air Inlet

以含20%的短碳纤维增强聚醚醚酮树脂为主要原料,采用注塑成型的方法制备了进气道及试片。通过对材料力学性能、微观形貌、进气道CT无损检测、内型面三坐标进行分析,结果表明:按照给定的工艺参数注塑成型,复合材料的抗拉强度达208 MPa、拉伸模量16.7 GPa、冲压式剪切强度100 MPa,碳纤维在树脂基体中分布均匀,进气道本体材料内部缺陷较少,进气道内外型面光滑、尺寸精度较高。

With 20%short carbon fiber reinforced PEEK as the main raw materials,the air inlet and samples were prepared by the iniection-moulding method.The mechanical properties and microscopic morphology of samples,X-CT nondestructive testing and three coordinates testing of the air inlet were analyzed.Experimental results show that the tensile strength of PEEK composites reaches 208 MPa,tensile modulus reaches 16.7 GPa,punch-type shear strength reaches 100 MPa,the distribution of irregular fiber is even,the inner defects of inlet are low,both inner and outer contour of inlet are smooth,size precision is higher。