非热压罐预浸料成型技术研究进展

非热压罐成型(out of autoclave process,OoA)技术是实现结构复合材料低成本制造的有效途径,是当前复合材料研究领域的热点之一。本文介绍了OoA成型复合材料国内外的研究前沿以及在航空航天领域的应用现状,从材料体系和成型工艺两大方面总结了OoA成型过程中的缺陷控制方法。在OoA预浸料成型技术中,可通过尽量减少树脂体系中挥发物含量、精细调控树脂体系反应和流变特性、控制预浸料中纤维和树脂的浸润程度、优化成型工艺等手段有效降低复合材料的孔隙率等缺陷。

Research Progress of Out-of-Autoclave Prepreg Processing Technology

Out of autoclave process (OoA) technology is an effective way to achieve low cost manufacturing of structural composites and one of the hotspots in the field of composite materials research.The research frontiers and applications of OoA composites in aerospace field at domestic and overseas are introduced and the defect control methods in OoA forming process are summarized from two aspects of material system and forming process.In the process of OoA preprepreg forming,the void fraction of composites can be effectively reduced by minimizing the volatile content in the resin, fine controlling the reaction and rheological properties of the resin,controlling the infiltration degree of fibers and resins in the prepreg and optimizing the forming process.