用共固结和热变形成型技术制造热塑性复合材料加筋结构

报导了碳纤维增强聚醚醚酮基热塑性复合材料的带L型加强筋结构件的一体化制造过程。强调了加强筋的热变形成型制造技术。实验发现,用编织布直接铺层模压成型加强筋时,难于精确控制碳纤维的定位;成型固结后,边缘区空隙率高。而用对合模模压热变形成型技术制造时,这些问题则可以解决。采用共固结技术制备了平板加筋结构。后两项技术在制造复杂制件方面具有一定的优势,大批量生产时可以降低制造成本。

Co-consolidating Thermoplastic Composite Article after Thermoforming Stiffers

This paper reported an integrated manufacturing process of one thermoplastic composite article with L-shaped stiffers of poly(ether ether ketone)(PEEK) matrix carbon fiber reinforced composites. It was found that the stiffer margins were not well consolidated by directly press forming after laying up the designed number of fabric in mold. However, a matched-die press thermoforming from the preformed blank solved the problem. The L-shaped stiffers were then fixed in mold to co-consolidate with the multiple fabric for cover flat part and finally bonded to each other. When using such quick forming techniques, the fabrication cost could drop dramatically in large volume production of aerospace composites 3-D structural parts.