Fused Filament Fabrication (FFF) technology is increasingly applied in automotive, aerospace and medical applications. FFF is one of the most widely used additive manufacturing techniques to manufacture thermoplastics or their composites. FFF enables improvement in both cycle time and total cost of product development. Such improvements are achieved through the quick manufacture of functional prototypes enable real-world product development and testing. While the benefits of FFF are undeniable, its use in demanding applications is hindered by materials properties. The used commodity and standard polymers actually exhibit low to medium thermal and mechanical properties. To overcome this limitation, the aerospace industry looks for high-performance thermoplastics to obtain plastic parts strong enough to be used as a replacement for metal. Recent developments in FFF equipment now enable engineering polymers, such as Polyether ether ketone (PEEK) and Polyether imide (PEI), to be utilized for parts with increased mechanical and thermal properties. Thus, this article reviews and discusses the properties and the printing parameters of PEEK and PEI produced by FFF.

熔融长丝制造（FFF）技术越来越多地应用于汽车，航空航天和医疗应用。FFF是制造热塑性塑料或其复合材料的最广泛使用的增材制造技术之一。FFF可以改善周期时间和产品开发的总成本。这些改进是通过快速制造功能性原型实现的，从而可以进行实际的产品开发和测试。尽管FFF的优点是不可否认的，但由于其材料性能，其在苛刻应用中的使用受到了阻碍。所使用的商品和标准聚合物实际上表现出低到中等的热和机械性能。为了克服这一限制，航空航天工业寻求高性能的热塑性塑料，以获得足够坚固的塑料部件以用作金属的替代品。FFF设备的最新发展现在使工程聚合物，例如聚醚醚酮（PEEK）和聚醚酰亚胺（PEI），可用于具有增强的机械和热性能的零件。因此，本文回顾并讨论了FFF生产的PEEK和PEI的特性和印刷参数。