Regular acrylics will soften when the environmental temperature above 80℃. It's nonhazardous just like candle. However, the mechanical properties will be significantly influenced and no more ready for daily service when the environmental temperature above 100℃.
To match the thermal resistant requirement in the growing market, thermal resistant acrylics has been developed by some players. The mechanical properties as well as the optical properties will be almost the same and ready for service when the environmental temperature above 100℃ - 120℃. It's exactly extending the market of acrylics.