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Variables Affecting the Weatherability of a Molded-in-Color Composite: Clearing Up Some Common Dilemmas

Paul A. Rettinger &  Santosh K. Yadav, Ph.D., Product Development Scientist, Thermosets – Americas for Chromaflo Technologies Corporation 


Have you ever formulated a fiberglass composite that you expected to weather well – and encountered surprising (and unpleasant) results?  Perhaps the system weathered well in accelerated testing, but fell apart outdoors – or vice versa.  There are many possible causes.  For example, will texturing – or lack thereof – affect these results?  Are we using an accelerated test method that is most appropriate for the application?  Can we use an “accelerated-accelerated” test to save time (and money)?  In the interest of controlling cost, what changes can I make to my formulation or process without compromising quality?  This paper identifies several misunderstandings that can adversely affect weatherability, identifies the underlying causes, and offers solutions to everyday dilemmas.


Paul A. Rettinger is Technology Manager, Thermosets – Americas for Chromaflo Technologies Corporation, a global corporation headquartered in Ashtabula, Ohio.  Prior to serving as Technology Manager, Mr. Rettinger was Quality Assurance Manager, responsible for quality and operations support functions in North America.  He has also served as Quality Assurance Supervisor for Coatings, and prior to this, as staff Research and Product Development Scientist for Plasticolors, Incorporated, for more than a decade.  In his career, Mr. Rettinger has served on the scientific staffs of several large and small corporations, and is an innovator of novel composite and coatings technologies.  Examples of his work can be found in such applications as tactile plates and walkways at highway intersections and rail stations, safety composite exterior hand rails, and exterior unpainted molded-in-color composite materials in numerous transportation applications.  

CONTACT:  prettinger@chromaflo.com

Santosh K. Yadav is Product Development Scientist, Thermosets – Americas for Chromaflo Technologies Corporation, a global corporation headquartered in Ashtabula, Ohio. Prior to serving as Product Development Scientist, Dr. Yadav was Assistant Research Professor in the Department of Chemical and Biological Engineering at Drexel University, Philadelphia. He received his bachelor and master degree in organic chemistry at the University of Allahabad, India and his Ph.D. in polymer chemistry at the Konkuk University Seoul, South Korea. He also worked as a postdoctoral researcher at Nanyang Technological University Singapore. His research interests include bio-based resins, thermoset composites, SMC/BMC thickeners and carbon nanomaterials (CNT & graphene) based composites.  Dr. Yadav has published several technical papers relating to composites.




Santosh K. Yadav & Paul Rettinger / (respectively) Product Development Scientist, Thermosets – Americas & Technology Manager, Thermosets - Americas / Chromaflo Technologies Corporation