Thermoset and thermoplastic polymeric materials are used as coatings on the bore of downhole tubulars such as water injectors in the oil industry. Previous work has indicated that such coatings can fail by impact damage and by abrasion from the wire used to lower inspection tools down the tubular. The wire is commonly called “slickline” and the type of wear is called “wireline wear”. However, t...

Epoxy-based nanocomposites were fabricated with different content of colloidal silica nanoparticles such as 10.0, 20.0 and 30.0 wt %, through solution casting. The covalent bonding interfaces, resulting from a ring-opening reaction between silica nanoparticles and epoxy matrix were confirmed by the Fourier transform (FT-IR) infrared spectroscopy. These nanocomposites were characterized for ...

A new simple experimental approach is proposed for in situ mechanistic studies of the underpaint stability metal/oxide/polymer interface under immersion. It allows an intelligent screening and fast ranking conversion coatings on Zn alloys designed further application organic coatings. The based a electrochemical aging protocol to samples preliminary coated with model epoxy-polymer. latter enoug...

Self-stratification is an innovative one-step process used to design multi-functional coatings gathering simultaneously in a one-pot formulation the primer, intermediate layer and top coat properties. Many self-stratifying contain oil-based epoxy resins but literature scarce development of “greener” solutions. In this work, silicone bio-based were dissolved various solvent blends, applied on co...

these days, most of the marine structures which are constructed and used in persian gulf, are made of st37 steel. due to oil and gas sources excavated, the number of these structures is constantly increasing. on the other hand, these types of structures are exposed to corrosive environments and it is seriously critical for these structures to be used for many years. coal tar epoxy (trade name),...

To prevent serious electromagnetic interference, a single-layer and double layer wave-absorbing coating employing complex absorbents composed of carbon black with epoxy resin as matrix was prepared. The morphologies of carbon black /epoxy composites were characterized by scanning electron microscope  and atomic force microscope, respectively. The carbon black  particles exhibit obvious polyarom...

Despite the fact that PEDOT:PSS has been successfully used in field of flexible electronics, some its applications domain rigid conductive coating have limited by pricey cost and subpar mechanical properties (hardness, adhesion, moisture absorption) commercially available Clevios™ PH 1000, as well poor conductivity, film formation, self-made PEDOT:PSS. In process investigating low-cost preparat...