纤维增强热固性聚合物基复合材料层间增韧研究进展

Development of interleaved fibre-reinforced thermoset polymer matrix composites

综述了纤维增强热固性聚合物基复合材料(PMC)层间增韧的最新研究进展。热固性复合材料由于基体树脂高的交联密度而呈脆性,表现出低的冲击损伤阻抗和损伤容限特征。柔性聚合物层间增韧是改善聚合物基复合材料层间断裂韧性和抗冲击性的有效手段,且不会降低热固性树脂的热性能和高模量。目前有3种层间增韧方法:颗粒增韧、聚合物纤维增韧和薄膜增韧。讨论了3种方法的概念、实施方案、增韧机理及研究成果。最后重点阐述了创新性的复合材料"离位"增韧思想,介绍了具有全部自主知识产权的"离位"复合材料高性能化技术体系,包括预浸料和液态成型两大复合材料产品系列。

The latest research progress of interleaving of fibre-reinforced thermoset polymer matrix composite（PMC）is reviewed.Thermoset composites are brittle due to the high crosslink density of the matrix resin,which exhibit low impact damage resistance and damage tolerance.Interleaving of the flexible polymer improves interlaminar fracture toughness and damage resistance without sacrificing the excellent thermal properties and high modulus of the thermosets.There are three types of interleaving methods which seem to be the most frequently reported methods,namely particle,polymer fiber and polymer film interleaving.The concept,implementary methods,toughening mechanism and research results are discussed.Finally,the emphasis on interleaving composites by innovative ex-situ concept is putted.Ex-situ high-performance technology system for composites with intellectual property consisting of prepreg-based and liquid molding composites are introduced.