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Abstract:  Increased interest in thermoplastic materials for commercial aerospace structures points to the growing need to join thermoplastic composites to both similar and dissimilar materials. This research explored the effectiveness of multiple surface preparation methods and adhesives applied to PEKK/carbon fiber composite laminates for bonding applications. Thermoplastic laminates were consolidated, processed by different surface preparation methods, and then bonded with various adhesives. Surface preparation methods included both abrasive and energetic techniques. Bonded assemblies were tested primarily using the double cantilever beam coupon configuration. Failure mode and fracture toughness results will be discussed. Additionally, thermoplastic panels subjected to energetic surface preparation techniques were evaluated with analytical tools, including scanning electron microscopy and contact angle measurements. These results will be highlighted to illustrate how a change in the thermoplastic material's surface energy, surface morphology, and surface chemistry can contribute to durable bonds.   


Authors: Ashley C. Tracey, Hardik Dalal, Marcus A. (Tony) Belcher, Daniel R. Ferriell, Kristin L. Hall, Kay Y. Blohowiak, Suzanne K. Thomas, Denise A. Blohowiak, Brienne S. Johnson,  William B. Grace, and Peter J. Van Voast  


Conference: CAMX 2017 –Orlando


SKU/Code: TP17-0271


Pages: 13


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