In situ stress measurement apparatus for liquid applied coatings

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An apparatus for measuring stress development in polymer and ceramic coatings is described. The device combines the coating, processing (chilling, curing, drying), and stress measurement steps necessary to accurately monitor stress development in situ. The measurement system was developed to study the effects of processing variables (e.g., temperature, air flow, relative humidity, etc.) on stress development in coatings ranging from solvent-cast polymers and particulate films to radiation-cured materials. The combination of coating, processing, and stress measurement allows us to mimic conditions used in an industrial setting. Results are reported for polyisobutyl methacrylate cast in toluene and aqueous gelatin coatings that demonstrate the utility of the apparatus in studying how stress evolution and magnitude relate to different process controls.

Original languageEnglish (US)
Pages (from-to)4564-4568
Number of pages5
JournalReview of Scientific Instruments
Issue number12
StatePublished - Dec 1997


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