CFRP层合板抗分层损伤技术研究进展

Progress of Anti-delamination Techniques for Laminated Composites

碳纤维/聚合物基复合材料(CFRP)具有高比强度、高比模量、性能可设计、结构尺寸稳定性高、耐疲劳、耐腐蚀等优点而被广泛应用于陆、海、空、天等高性能载具中。各类碳纤维复合材料结构中,层合结构是主要结构形式。传统的CFRP层合结构中各铺层之间缺少纤维增强,故而导致CFRP层压板易产生层间分层且抗冲击损伤能力较低,因此层合板抗分层损伤和破坏方法成为关键问题和研究热点。本文综述了层合板抗分层损伤的方法,并对这些方法的适用性、优缺点进行了比较与阐述;重点归纳了利用碳纳米管提升层合板抗分层损伤的研究进展,并对碳纳米管的性能、增韧机理进行了阐述以及碳纳米管的增韧方法和效果进行了综述与归纳,讨论了"碳纳米管层间Z向增韧"进一步提高复合材料层间性能的可能性。

Carbon fiber reinforced plastics（CFRP）are widely applied in high performance vehicles due to their excellent nature,namely,high specific strength and modulus,tailorable mechanical properties,fatigue and corrosion resistance,and dimensional stability.Among all the CFRP components,laminated structure are most widely applied.However,due to the lack of reinforcement fibers within the interlaminar zone,laminated CFRP are highly susceptive to delamination and low velocity impact damage.Based on this background,the research progress of laminated plate anti-delamination damage methods is reviewed in this paper,the applicability,advantages and disadvantages of these methods are compared and expounded,and the research progress of using carbon nanotubes（CNTs）to lift laminated plates against delamination damage is summarized.The properties and toughening mechanism of carbon nanotubes,the toughening methods and effects of carbon nanotubes are summarized,and the possibility of further improving interlaminar properties of carbon nanotubes is discussed.