epoxies can be cured thermally or photolyt- ically without any co-reagent (Plummer et al <a href="https://www.teng-jie.com/Bath-Brush-TJ029-pd42329215.html">shower sponge holder</a>. 2016). Thus, epoxy resins can range from hard low-temperature epoxies to more breakable high-temperature epoxies