Warren L Dowler

Title: Warren L Dowler: Innovator in Carbon-Graphite Fiber Technology

Introduction

Warren L Dowler is a notable inventor based in Sierra Madre, CA (US). He has made significant contributions to the field of carbon-graphite fiber technology, holding a total of 3 patents. His work focuses on enhancing the properties and applications of these fibers, particularly in composite materials.

Latest Patents

One of his latest patents is for a coating for gasifiable carbon-graphite fibers. This innovation involves applying a thin, uniform, and firmly adherent coating of metal gasification catalyst to carbon-graphite fibers. The process begins with coating the fibers with a film-forming polymer that contains functional moieties capable of reacting with catalytic metal ions. Multivalent metal cations, such as calcium, are used to cross-link the polymer, forming catalytic metal macro-salt links between adjacent polymer chains. The resulting coated fibers serve as reinforcement for resin composites and gasify upon combustion without releasing conductive airborne fragments.

Another significant patent focuses on gasifiable carbon-graphite fibers themselves. These fine fibers do not combust during the combustion of a composite and can be expelled into the air as fine conductive particles. By coating the fibers with a salt of a metal that has a work function below 4.2 eV, such as calcium acetate, the combustion of the fibers is catalytically enhanced at temperatures below 1000°C. This allows the fibers to self-support combustion and burn to produce a non-conductive ash. Fire-polishing the fibers before applying the coating is recommended to remove sizing and expose the carbon surface to the catalyst.

Career Highlights

Warren L Dowler has worked with prestigious organizations, including the United States of America as represented by the Administrator and the California Institute of Technology. His innovative work has contributed to advancements in materials science and engineering.

Collaborations

Throughout his career, Dowler has collaborated with notable individuals such as Jan Harper-Tervet and Shiao-Ping S Yen. These collaborations have further enriched his research and development efforts in the field.

Conclusion

Warren L Dowler's contributions to carbon-graphite fiber technology demonstrate his innovative spirit and commitment to advancing materials science. His patents reflect a deep understanding of the properties and applications of these fibers, paving the way for future developments in composite materials.