Used as encapsulation resins or potting resins, two-part epoxy resins harden both at room temperature and at high temperature, unlike one-part epoxy resins. However, heat-induced hardening increases the cross-linking density: the mixture reaches its final solidity more quickly and it is slightly more solid compared with resins hardened at room temperature.
Epoxy resins offer superior performance and are used when the end product must withstand a challenging service environment.