A Practical fiber optic sensor to monitor resin cure and interphase formation

摘要

A fluorescent probe, covalently grafted to glass, is used to study the glass / resin interphase region near the surface. A shift in the fluorescence maximum during resin cure can be monitored when the grafted dye is immersedin epoxy. The position of the fluorescence maximum is used to detect a difference between the bulk resin and interphase. To make the technique practical as a cure sensor, the dye can be grafted to a glass fiber optic.