Carbon Fiber Reinforced Plastic (CFRP) substrate is of interest in automotive exterior applications due to its lightweight property. However, achieving Class-A appearance (LW ≤ 10, SW ≤ 20) on painted CFRP is challenging due to surface telegraphing. Surface telegraphing occurs during baking of a paint system due to mismatch of coefficient of thermal expansion (CTE) between carbon fiber & plastic. We developed a paint system that can provide durable class-A appearance on carbon fiber reinforced polyamide (PA-CF) substrate while meeting other performance requirements. The prototype system works not only on PA-CF substrate but also on Thermoplastic Polyolefin (TPO) and metal substrates. No flame treatment or chemical treatment is required on the substrate to pass stringent adhesion tests such as steam-jet and thermal shock. The coating system can enable the use of eco-friendly polyamide carbon fiber in lightweight automotive, which is especially important for the electric vehicles as less energy is consumed as the weight of the vehicle is reduced.
Kevin Turley graduated from Eastern Michigan University with a BS degree in Chemistry in 2014, where he also studied in the Polymers and Coatings Technology program. For the last eight years, he has worked for BASF Coatings in technical service and product development roles. He is currently working as a Scientist and Project Manager in the OEM Automotive Coatings Product Development Group based in Southfield, Michigan. Kevin’s focus is mostly in the area of clearcoat technology, where he has worked to develop and support the launch of new products for multiple OEM’s.