热固性聚酰亚胺树脂基复合材料的增韧改性研究进展

Advance in Toughening Methods of Thermosetting Polyimide Resin Matrix Composites

热固性聚酰亚胺是目前有机材料体系中耐热性能最为优异的材料之一,以其制备的纤维增强复合材料在航空航天领域获得了大量的应用。但韧性性能不足限制了其在多个领域的进一步应用,因此高韧性聚酰亚胺复合材料逐渐成为近年来研究的热点。综述了热固性聚酰亚胺树脂基复合材料增韧改性方法的研究现状与发展趋势,涉及基于分子主链结构的增韧改性方法、热塑性聚合物共混增韧热固性聚酰亚胺、热塑性聚合物层间增韧改性聚酰亚胺复合材料等一系列方法。

Thermosetting polyimide is one of the most excellent heat resistant materials in organic material systems. The fiber reinforced thermosetting polyimide composites have been widely used in the field of aeronautics and astronautics. However, the further application of high toughness polyimide composites in many fields is limited due to the lack of toughness properties. Therefore, the development of high toughness polyimide composites has gradually become a hot research topic in recent years. In this article, the research status and development trend of toughening methods of thermoset polyimide composites are reviewed, including a series of methods such as the modification method based on molecular main chain structure, thermoplastic polymer blending thermosetting polyimide and thermoplastic polymer interlaminar toughening polyimide composites.