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摘要
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。
Abstract
Based on RTM molding process,the laminate was made up of T700 carbon fiber layers,PAEK-films and 6421 resin.The distribution characteristics and failure mechanism of toughness layers in the composite were analyzed,by research on the stability of film in the process of RTM injection,and the low-velocity impact characteristics in different toughening structures.Results showed that the thermoplastic film layers did not flow out with resin in the process of RTM injection.The thermoplastic and thermosetting resin were formed in continuous phase which distributed in interlamination and fiber layer.The toughening structures of whole cycle distribution and alternate cycle distribution had similar CAI strength,which increased by 26.5% in contrast to non-toughening structure.
关键词
“离位”増韧
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复合材料
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低速冲击
Key words
‘EX-Situ’ technique
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composite
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low-velocity impact
T700/6421复合材料层合板“离位”増韧研究[J].
化工新型材料, 2017, 45(9): 124-126 DOI:
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