Carbon-Based Nanoparticle-Filled Protective Coatings for Enhanced Damage Tolerance and Corrosion Resistance of Structural Weldment

Dispersion characteristics and mechanical properties of epoxy nanocomposites reinforced with carboxymethyl cellulose functionalized nanodiamond, carbon nanotube, and graphene

“…13 Graphene is a single layer of graphite, while CNT is rolled-up hollow graphene sheets. 14,15 Although all three nanocarbons possess comparable properties, the intrinsic nature of dimensional and structural differences may inevitably lead to varied performances as nanofillers in epoxy resin. 16,17 The properties of epoxy nanocomposites reinforced with a single type of nanocarbons have been substantially investigated, but there is a severe lack of comprehensive studies comparing the structural difference of carbon-based nanofillers and its effects on the reinforcing efficiency in epoxy nanocomposites.…”

“…On the other hand, carbon atoms in CNT and GNP undergo sp 2 hybridization resulting in a one‐dimensional cylindrical and a two‐dimensional planar hexagonal structure, respectively 13 . Graphene is a single layer of graphite, while CNT is rolled‐up hollow graphene sheets 14,15 . Although all three nanocarbons possess comparable properties, the intrinsic nature of dimensional and structural differences may inevitably lead to varied performances as nanofillers in epoxy resin 16,17 .…”

Damage-Tolerant Wood Layers for Corrosion Protection of Metal Structures

“…Furthermore, many healing agents are hydrophilic and will trigger osmotic driven water transport through the protective layer. , Effendy et al showed that the local blisters would trigger a global failure, such as complete delamination and breakage of the protective layer if the osmotic pressure exceeds the elastic limit of the protective layer . The formation of “blisters” due to this mechanism and the resultant coating failure remain a significant challenge. ,, An alternative strategy to improve the durability of protective layers is to use layers with inherently high mechanical strength. − Chuang et al reports that the rate of cathodic blister formation under stiff coatings (Young’s modulus of 1 GPa) is 3 orders of magnitude lower than soft coatings (Young’s modulus of 0.01 GPa) . However, thin, structurally stable layers with high damage resistance are rare. − The Young’s modulus and tensile strength of most protective layers are less than 1.5 GPa and 100 MPa, respectively (Table S1).…”