HRR is one of the most important parameters to describe the process of fire, which determines the energy release in fire, and is a basic parameter of the fire danger degree . The peak heat release rate represents the maximum heat release rate of material . The average heat release rate represents the average level of heat material released in a fire. The higher the average heat release rate, the more violent material burns . The significance of lowering the SPR can be analyzed, as EPECO50 demonstrates that it is more effective in reducing smoke at high incident heat influx than using DGEBA epoxy resin alone. Also, the results indicate that the introduction of epoxidized corn oil into DGEBA epoxy resin in the form of an interpenetrating network reduced the smoke generation of the blend to a certain extent. In addition, in building fires, CO is the most common toxic constituent in smoke. So, CO generation is to measure the rate of fire risk of important material parameters. Here, the significance of the much lower value of EPECO50 compared to vinyl ester resin might be because of the absence of high-temperature fracture and combustion of the polymer chain.