An efficient solution has been built for the chemical recycling of carbon fiber/epoxy composites by oxidative degradation under mild conditions with acetone and H₂O₂. Clean CF can be obtained after reacting at 60 °C for 30 min. The decomposition ratio of epoxy is above 90%, and the strength of CF remains more than 95% of its original strength.

A highly efficient intumescent flame retardant (IFR) system for polypropylene is constructed by adding a polyoxometalate based ionic liquid (PIL) into conventional PP/IFR composites. The PP composite with 14.5 wt% IFR and 0.5 wt% PIL can pass the UL-94 V-0, while that for single IFR is more than 25 wt%.