A composite comprising: a substrate (110; 210; 310; 410) comprising fluoroelastomers, perfluoroelastomers, hydrogenated nitrile butyl rubber, ethylene-propylene-diene monomer (EPDM) rubber, silicones, epoxy, polyetheretherketone, bismaleimide, polyethylene, polyvinylalcohol, phenolic resins, nylons, polycarbonates, polyurethanes, tetrafluoro ethylene-propylene elastomeric copolymers, iron, steel, chrome alloys, hastelloy, titanium, molybdenum, or a combination thereof; a binder layer (220; 320, 330, 340; 420a, 420b) disposed on a surface of the substrate (110; 210; 310; 410); and a nano filler layer (120; 230; 350; 430a, 430b) comprising nanographene having an aspect ratio greater than or equal to 10 and disposed on a surface of the binder layer (220; 320, 330, 340; 420a, 420b) opposite the substrate (110; 210; 310; 410), characterised in that: the binder layer (220; 320, 330, 340; 420a, 420b) is a positively charged binder layer, comprising a polyethyleneamine, a polyethyleneimine, a hyperbranched polyamine, a dendrimeric polyamine, a polyaminoacrylate, a polyaminoacrylate copolymer, or combinations thereof; or the binder layer (220; 320, 330, 340; 420a, 420b) is a negatively charged binder layer comprising polycarboxylic acids, salts of polycarboxylic acids, a polycarboxylic acid copolymer, or combinations thereof; the composite is a coated article for use in an oilfield or down-hole environment; the nano filler layer (120; 230; 350; 430a, 430b) has a positive or negative charge not identical to the charge of the binder layer, and the substrate (110; 210; 310; 410) is neutral or has a charge opposite that of the binder layer; and the nano filler layer further comprising carbon black, mica, clays, or a combination thereof. a substrate (110; 210; 310; 410) comprising fluoroelastomers, perfluoroelastomers, hydrogenated nitrile butyl rubber, ethylene-propylene-diene monomer (EPDM) rubber, silicones, epoxy, polyetheretherketone, bismaleimide, polyethylene, polyvinylalcohol, phenolic resins, nylons, polycarbonates, polyurethanes, tetrafluoro ethylene-propylene elastomeric copolymers, iron, steel, chrome alloys, hastelloy, titanium, molybdenum, or a combination thereof; a binder layer (220; 320, 330, 340; 420a, 420b) disposed on a surface of the substrate (110; 210; 310; 410); and a nano filler layer (120; 230; 350; 430a, 430b) comprising nanographene having an aspect ratio greater than or equal to 10 and disposed on a surface of the binder layer (220; 320, 330, 340; 420a, 420b) opposite the substrate (110; 210; 310; 410), the binder layer (220; 320, 330, 340; 420a, 420b) is a positively charged binder layer, comprising a polyethyleneamine, a polyethyleneimine, a hyperbranched polyamine, a dendrimeric polyamine, a polyaminoacrylate, a polyaminoacrylate copolymer, or combinations thereof; or the binder layer (220; 320, 330, 340; 420a, 420b) is a negatively charged binder layer comprising polycarboxylic acids, salts of polycarboxylic acids, a polycarboxylic acid copolymer, or combinations thereof; the composite is a coated article for use in an oilfield or down-hole environment; the nano filler layer (120; 230; 350; 430a, 430b) has a positive or negative charge not identical to the charge of the binder layer, and the substrate (110; 210; 310; 410) is neutral or has a charge opposite that of the binder layer; and the nano filler layer further comprising carbon black, mica, clays, or a combination thereof.