The logical outline and assembly of structural�functional materials are a progressive tendency of materials knowledge. Graphene (Gr) spread in LDPE considerably increases thermal/mechanical properties of LDPE/Gr composites. DMA and strength testing machine were used to study mechanical properties. The high specific surface areas and superior properties of Gr improved thermal strength, conductivity, storage modulus, and mechanical properties of composites. The electrical conductivity upgraded owing to the great thermal strength of Grs in LDPE matrix. In terms of rheology, the addition of Grs augmented viscosity of LDPE matrix. Outstanding distribution of Grs was accomplished. LDPE/Gr composites were characterized by SEM, TEM, Raman spectra, XRD, TGA and DSC to study distribution morphology and thermal strength. Results display that presence of filler does not create an alteration in microscopic structure of polymers. However, on a macroscopic scale, Gr constrains mobility of polymer chains, causing a growth in stiffness and strength of composite. © 2019, Central Institute of Plastics Engineering & Technology.