碳纤维复合材料长桁拉挤液体成型预成型体制备研究  

Research on Preparation of Carbon Fiber Composite Stringer Pultrusion Liquid Molding Preform

作　　者：贾朋军 郭红军 张东民 李四杰 侯伟 JIA Pengjun;GUO Hongjun;ZHANG Dongmin;LI Sijie;HOU Wei(Advanced Technik Composite Corp.,Changzhou,213000,Jiangsu,China)

机构地区：[1]常州启赋安泰复合材料科技有限公司,江苏常州213000

出　　处：《高科技纤维与应用》2024年第6期26-31,共6页Hi-Tech Fiber and Application

基　　金：国家科技部重点研发项目“干纤维自动铺放及拉挤液体成型工艺研究与性能评价”(2022YFB3709204)。

摘　　要：采用碳纤维多轴向织物进行复合材料长桁的铺层设计,利用拉挤设备进行复合材料长桁的预成型体制备。带有定型剂的碳纤维多轴向织物在拉挤设备牵引力的作用下,依次通过拉挤预成型模具和加热的成型模具,形成预成型体。相比传统的手工铺贴制备复合材料长桁预成型体,拉挤工艺可以快速制备复合材料长桁预成型体,是手工铺贴的几十甚至上百倍。结果表明:定型剂含量对拉挤工艺制备的预成型体的厚度变化无明显影响;纤维体积含量为44.4%时,预成型很成功,如果想提高纤维体积含量,需要缩小多轴向织物的缝线的缝合行距;拉挤速度对预定型效果无影响。In this study,carbon fiber multi-axial fabrics were used for the composite stringer lay-up design,and pultrusion equipment was utilized for the preparation of composite stringer preform.Carbon fiber multi-axial fabric with a shaping agent,under the traction of the pultrusion equipment,sequentially pass through the pultrusion preforming mold and heated forming mold to form the preforms.Compared with the manual lay-up preparation of composite stringer preform,the pultrusion process can quickly prepare composite stringer preform,which is dozens or even hundreds of times faster than manual lay-up.The results show that the content of the shaping agent has no significant influence on the thickness variation of the preform prepared by the pultrusion process;with a fiber volume content of 44.4%,the preform was very successful.To increase the fiber volume content,it is necessary to reduce the stitch spacing of the multi-axial fabric's seams.The pultrusion speed has no effect on the preforming result.

关 键 词：碳纤维多轴向织物 复合材料长桁预成型体 拉挤工艺 定型剂 

分 类 号：TB332[一般工业技术—材料科学与工程]