摘要
为研究国产热塑性预浸料的自动铺放工艺适配性,分别以熔融浸渍法和溶液浸渍法制备的碳纤维增强聚芳醚酮(CF/PAEK)预浸料为原材料,借助国产激光加热自动铺丝设备,采用原位固结、原位热压、热压罐后固结三种不同的工艺方法制备复合材料,并通过无损检测、金相表征、压缩性能测试等方法评价复合材料的成型质量及性能。结果表明,溶液浸渍法制备的预浸料的浸渍质量更好,在原位固结和原位热压工艺中,使用溶液浸渍预浸料制备的复合材料0°压缩性能优于熔融浸渍法。溶液浸渍CF/PAEK复合材料原位固结工艺下的0°压缩强度为705.6 MPa,压缩模量为129.9 GPa,在原位热压工艺下的0°压缩强度为686.1 MPa,压缩模量为145.1 GPa。在热压罐后固结工艺条件下,熔融浸渍预浸料制备的复合材料力学性能明显优于溶液浸渍预浸料制备的复合材料,其0°压缩强度为960.4 MPa,压缩模量为131.9 GPa,冲击后压缩强度达到317.1 MPa,这主要是由于热压罐后固结工艺能够消除熔融浸渍法预浸料的缺陷,显著提升了复合材料的成型质量。
To investigate the process adaptability of the domestical thermoplastic prepregs for automated placement,in this study,utilizing carbon fiber-reinforced polyaryl ether ketone(CF/PAEK)prepregs manufactured by melt impregnation and solution impregnation methods.Aiding the domestical laser-heated automated fiber placement equipment,composites were fabricated using three distinct process methods:in-situ consolidation,in-situ hot pressing,and post-autoclave consolidation.The consolidation quality and performance of the composites were systematically evaluated through non-destructive testing,metallographic characterization,and compression property measurements.The results indicate that the prepreg produced via solution impregnation exhibits superior impregnation quality.Composites fabricated from solution-impregnated prepregs demonstrated better 0°compression performance under both in-situ consolidation and in-situ hot pressing processes,achieving compressive strengths of 705.6 MPa and 686.1 MPa,and compressive moduli of 129.9 GPa and 145.1 GPa,respectively.Conversely,after post-autoclave consolidation,composites made from melt-impregnated prepregs showed significantly enhanced mechanical properties,with a 0°compressive strength of 960.4 MPa,a compressive modulus of 131.9 GPa,and a compression-after-impact strength of 317.1 MPa,outperforming the solutionimpregnated counterparts.This is primarily attributed to the effective elimination of inherent defects in the melt-impregnated prepregs by the post-autoclave consolidation process,which substantially improved the overall consolidation quality of the compos‐ites.
作者
顾星河
来晓靓
纪毓杨
林秋实
李博健
陶群燕
谢富原
GU Xinghe;LAI Xiaoliang;JI Yuyang;LIN Qiushi;LI Bojian;TAO Qunyan;XIE Fuyuan(Zhejiang provincial Innovation Center of Aircraft Composite Technology,Hangzhou 311222,China;Zhejiang Huarui Aerospace Manufacturing Co.,Ltd.,Hangzhou 311222,China)
出处
《工程塑料应用》
北大核心
2026年第3期130-137,共8页
Engineering Plastics Application
