Effect of methyl methacrylate/nitrile rubber/graphene oxide on the anticorrosion and mechanical properties of epoxy‐based coating

Abstract

Graphene oxide has a wide application prospect as filler due to its excellent physical blocking, coating reinforcement, and cathodic protection properties. However, graphene oxide is highly susceptible to agglomerative reunions.Three types of anti-corrosion coatings were prepared on 5083 Al alloy by a simple smearing method. The coatings are based on neat epoxy resin by introducing different amounts of graphene oxide, methyl methacrylate/nitrile rubber, and methyl methacrylate/nitrile rubber/ graphene oxide fillers. Thermogravimetric analysis (TGA) results show that methyl methacrylate/nitrile rubber/graphene oxide fillers enhance the thermal stability of the epoxy resin-based coatings. The SEM morphology shows the well-dispersed methyl methacrylate/nitrile rubber/graphene oxide in the coating. The 2 and 1 wt% methyl methacrylate/nitrile rubber/graphene oxide coating exhibits excellent mechanical properties and outstanding anti-corrosion properties, respectively. At 1 wt%, the OCP of the coating is À0.21 V. Additionally, the coating exhibits great anti-corrosion performance after immersion for 196 h. Compared to the pristine coating and methyl methacrylate/nitrile rubber coatings, the methyl methacrylate/nitrile rubber/graphene oxide coatings show better thermal stability, mechanical properties and anti-corrosion properties. The methyl methacrylate/nitrile rubber fillers degrade the thermal stability and anti-corrosion protection and do not affect mechanical properties. Compared with graphene oxide coatings, the surface of methyl methacrylate/nitrile rubber/graphene oxide coatings is smoother with better dispersion, possessing better mechanical and anti-corrosion properties though only a fewer amounts of graphene oxide were filled in epoxy resin. The better corrosion resistance of the coating can be attributed to the synergistic effect of a physical barrier and a coulomb block.

Effect of curing agents n‐octylamine and m‐xylene diamine on the mechanical and memory properties of E51 epoxy resin

“…The first stage is the onset of weight loss in the low‐temperature region, defining 2 wt.% weight loss as the onset of the sample decomposition. This stage may be due to weight loss caused by impurities such as moisture in the sample 45 . The second stage is the rapid weight loss order in the high‐temperature region, with decomposition temperatures all around 296°C, where the decomposition temperature of the E51 is shown 36 .…”

Effect of nanotitanium‐based hybrid materials and methyl methacrylate/nitrile rubber/graphene oxide on the microstructure and anticorrosion properties of waterborne epoxy resin coatings

“…In our previous work, we have modified waterborne epoxy resin by adding NTH; even though NTH exhibits the potential to enhance both mechanical and anticorrosion properties of waterborne epoxy resin coatings, the coating still exhibited crevices, which deteriorated its properties. However, when we modified the solvent‐based epoxy resin coatings through the introduction of MMA/NBR/GO, 50 Our research revealed that the coating demonstrated improvements in both mechanical and anticorrosion properties. Hence, in order to further advance the anticorrosion and mechanical properties of the waterborne epoxy resin coatings, in this work, we added both NTH and MMA/NBR/GO.…”

Enhancement of the mechanical and tribological properties of carboxylated acrylonitrile butadiene rubber filled with cryptocrystalline graphite by different preparation methods

“…[3][4][5] Most notably, graphite, a solid lubricant with a unique lamellar structure, can improve the mechanical, anti-friction, and wear-resistance performance of polymers. [6][7][8] Graphite materials generally include flake graphite, 9 expandable graphite, 10,11 graphene, 12,13 and graphene oxide. [14][15][16] They have been used as multifunctional additives endowed with excellent electrical/thermal conductivity, heat aging and tribological properties, etc.…”