The Fluorescence Property and Thermal Stability of SrAl2O4: Eu2+, Dy3+/Silicone Rubber Composites

A series of fluorescent composites were prepared by mixing silicone rubber (SR) with SrAl2O4: Eu2+, Dy3+. The influence of the SrAl2O4: Eu2+, Dy3+ content on the fluorescent intensity (FI) and thermal stability of the composites was investigated. The results showed that the fluorescent intensity of the composites increased with the increment of SrAl2O4: Eu2+, Dy3+ content, but the phenomenon of fluorescent quenching didn't emerge. According to the XRD (X-Ray Diffraction) and SEM (Scanning Electron Microscopy) measurement, it can be confirmed that neither the reaction or phase separation between SrAl2O4: Eu2+, Dy3+ and silicone rubber happened. Thermogravimetric analysis suggested that SrAl2O4: Eu2+, Dy3+ has high thermal stability and the addition of SrAl2O4: Eu2+, Dy3+ was beneficial to improve the thermal stability of the silicone rubber composites.