Processing parameters for filament winding thick‐section PEEK/carbon fiber composites

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Abstract
The consolidation pressure and winding speed for thermoplastic filament winding were studied. Thermoplastic composite parts were manufactured from tape prepreg (APC‐2); powder‐coated, semi‐consolidated towpreg; and commingled fiber towpreg. The material used was carbon fiber (AS‐4) (60 vol%) in a PEEK matrix. The parts made were open‐ended cylinders of the three materials, 177.8‐mm ID, 228.6 mm long, 17 plies thick with a 0° lay‐up angle; and rings, 50 plies of APC‐2 thick, 6.35 mm wide (one strip wide), 177.8‐mm ID, and a lay‐up of 0°. Their quality was determined by surface finish and void percentage. The tubes made from APC‐2 appeared to have the best quality of the three prepregs. For the rings, the speed of lay‐down had a significant effect (at a 99% confidence level) on both the final width of the parts and on the percentage of voids. The pressure of the roller had a significant effect on the final widths at a 99% confidence level, but a significant effect on the percentage of voids at only a 95% confidence level.

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