Preparation of Ag coating reduced graphene oxide and its application as a conductive filler to polyacrylate

By taking the advantage of the wide surface area of reduced graphene oxide (rGO), a type of carbon/metal hybrids composed by rGO coated with silver nanoparticles (Ag–rGO) has been synthesized via an easy chemical coating method. Then the Ag–rGO hybrids are filled into polyacrylate (PA) as elelctrically conductive fillers to survey the application of the hybrids in polymer based composites. Compatible research indicates the hybrids could evenly disperse in PA with a Methyl Ethyl Ketone (2-MEK) enviroment for a long period. Property measurements suggest that the Ag–rGO dual fillers have greatly improved the electrical conductivity of PA matrix, enabling the conductive of the Ag–rGO/PA composites to rise more than ten orders while reducing the main bonding performance of the composites. With 10.0 wt% of Ag–rGO hybrids, the composites exhibited optimized electrically conducting and mechanical properties, which were 2.40 × 10⁻² S/cm of conductivity, 0.62 KN/m of 180°peel strength and 0.67 MPa of shear strength. The great effect on PA is caused by the electrical conducting of nano-scaled Ag particles and the intermolecular forces between rGO and PA.