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基于树脂转移模塑(RTM)成型工艺,以聚芳醚酮(PAEK)作为“离位”増韧膜,将増韧膜置于T700碳纤维帘子布层间,并注入6421双马树脂成型复合材料层合板,研究増韧膜在RTM注射过程中的抗冲刷稳定性和不同増韧结构的低速冲击性能,分析了韧性层在复合材料层内的分布特征及冲击破坏机理。结果表明,热塑性韧性层在RTM快速注射过程中未随树脂流出,热塑与热固性树脂分别在层间及层内形成了连续相结构,层间増韧后的层合板冲击后压缩(CAI)强度提高26.5%,两种周期増韧结构对于CAI强度的提高程度相当。
Based on the resin transfer molding (RTM) molding process, polyaryletherketone (PAEK) was used as the “lift-off” toughening film, and the toughening film was placed between the T700 carbon fiber cord fabric layers and injected with 6421 bismaleimide resin Composite laminates, the anti-scouring stability of toughening film during RTM injection and the low-speed impact performance of different toughening structures were studied. The distribution characteristics and impact failure mechanism of ductile layer in composite layer were analyzed. The results show that the thermoplastic ductile layer does not flow out with the resin during the rapid injection of RTM. The thermoplastic and thermosetting resins form a continuous phase structure in the layers and in the layers, respectively. The post-impact compression (CAI) strength Increased by 26.5%. The enhancement of CAI intensity by two cycles of toughening structure was similar.