基于纤维包覆法制备碳纤维增强热塑性复合材料

采用热塑性长丝包覆碳纤维束和热压法制备单向碳纤维增强复合材料,测试了试样的拉伸和冲击性能,研究了长丝包覆在树脂浸润过程中缩短流程的作用。同时,采用了多向包覆法制备了聚酯/芳纶长丝包覆碳纤维束并得到单向碳纤维增强复合材料,包覆芳纶进一步提高了热塑性复合材料的力学性能,结果表明:和碳纤维增强聚酯复合材料相比,芳纶/碳纤维增强聚酯复合材料拉伸强度增加了22.8%和49.5%,冲击强度增加了65.8%和45.6%。

Preparation of carbon Fiber Reinforced Thermoplastic Composites Based on Fiber Coating Method

The unidirectional carbon filament reinforced composites were prepared by thermoplastic filament coated carbon fiber bundle and hot-pressed method. The tensile and impact properties of the composites were tested and the role of filament coating in shortening the process of resin infiltration was studied. At the same time, polyester/aramid filament coated carbon fiber bundle was prepared by multidirectional coating method and unidirectional carbon fiber reinforced composite was obtained. The mechanical properties of thermoplastic composite were further improved by coating aramid fiber. Compared with carbon fiber reinforced polyester composites, the tensile strength of aramid fiber/carbon fiber reinforced polyester composites increased by 22.8% and 49.5%.the impact strength increased by 65.8% and 45.6%.