The effect of two mixing parameters during preparation of epoxy composites on speed 250 rpm and 500 rpm, mixing time 60, 90, 120, 150 and 180 minutes were observed in this study by flexural and microscopy analysis. Preparation epoxy composites were based on epoxy diglycidyl ether of bisphenol A (DGEBA) and montmorillonite (OMMT) filler. It was found that mixing speed at 500 rpm performed higher flexural strength as compared to 250 rpm at mixing time 150 minutes. This was due to an improved mixing speed by appropriate time as observed through Scanning Electron Microscopy (SEM).
