Akademik Veri Yönetim Sistemi
Processes, cilt.14, sa.7, 2026 (SCI-Expanded, Scopus)
Solvent-free, continuous manufacture of carbon-fiber/poly(ether ether ketone) (CF/PEEK) towpregs via fluidized-bed powder coating requires stable powder fluidization together with controllable coating residence time. A laboratory-scale continuous coating line comprising a creel, guiding/tension rollers, a vibrated fluidized-bed coater, as well as a take-up unit was designed and commissioned. Subsequently, a two-stage optimization and modeling framework was developed. First, PEEK powder fluidization was optimized using a Taguchi L9 design, varying air pressure ((Formula presented.)), powder weight ((Formula presented.)), and vibration frequency ((Formula presented.)); bed expansion ratio ((Formula presented.)) and average surface bubble diameter (Formula presented.) were measured and ANOVA identified air pressure as the primary contributor to (Formula presented.) (83.4%), establishing a stable operating window. Second, within this window, coating performance was assessed by varying line speed ((Formula presented.)) and coating-roller position ((Formula presented.)) in 12 runs and combining them into a geometry-based residence time ((Formula presented.)) for simplified control. Coating quality was quantified based on fiber volume fraction ((Formula presented.)) and composite tensile strength ((Formula presented.)) after consolidation. The best condition in the tested range was (Formula presented.) and (Formula presented.) ((Formula presented.)), achieving 61.5% (Formula presented.) and 1800.5 MPa tensile strength. The resulting mathematical models predicted (Formula presented.) and (Formula presented.) with good accuracy ((Formula presented.)), supporting parameter selection and process optimization for continuous CF/PEEK towpreg production.