【摘要】 针对CF/PAEK复合材料自动铺放成型工艺中质量一致性差的问题，提出一种铺放后真空辅助原位退火（vacuum-assisted in-situ annealing,VIA）工艺。针对自动铺放成型后的层合板开展VIA工艺实验，通过调控原位退火温度和保温时间制备CF/PAEK复合材料单向层合板，分别研究VIA工艺参数对成型温度场、翘曲变形、孔隙率、结晶度和层间性能的影响。结果表明：VIA工艺可以为样件提供均匀的温度场，消除结晶梯度，使样件翘曲程度随着退火温度的升高而逐渐降低，直至消除；当退火温度超过树脂熔融温度，可以降低CF/PAEK预浸料或自动纤维铺放（AFP）工艺过程中产生的内部孔隙，孔隙率降至1.97%，同时大幅提升层间性能，使样件层间剪切强度达到64.7 MPa，相比未经过VIA的样件提升58.6%。更多还原

【Abstract】 To address the challenge of inconsistent forming quality observed in carbon fiber-reinforced polyaryl ether ketone(CF/PAEK) composites during in-situ automated fiber placement(AFP), this study introduces a vacuum-assisted in-situ annealing(VIA) process implemented subsequent to layup. The study systematically examines the impact of VIA parameters —specifically annealing temperature and holding time —on various aspects of CF/PAEK unidirectional laminates,including temperature field uniformity, warpage deformation, porosity, crystallinity, and interlaminar properties. Experimental findings reveal that the VIA process facilitates a uniform temperature field, mitigates crystallinity gradients, and progressively diminishes warpage deformation with an increase in annealing temperature,ultimately achieving complete elimination of warpage.Notably,when the annealing temperature surpasses the resin melting point,internal pores formed during the CF/PAEK prepreg or AFP process undergo substantial reduction,resulting in a porosity level of merely 2%. Furthermore,the interlaminar performance exhibits a remarkable enhancement,with an interlaminar shear strength(ILSS)of 64.66 MPa—representing a 58.6% improvement compared to specimens that have not undergone VIA treatment.更多还原