Corrosion protection mechanisms of carbon steel by an epoxy resin containing indole-3 butyric acid modified clay

Abstract

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Effects of organically modified nanoclay particles on the mechanical properties of aliphatic polyurethane/clay nanocomposite coatings

“…All the results illustrate that in order to achieve the best possible properties of polymer–clay nanocomposites, obtaining a stable dispersion in which the silicate nanolayers are completely exfoliated in the polymeric matrix is a crucial consideration; therefore, during nanocomposite preparation, the evaluation and assessment of the morphology of these nanocomposites is of great importance . Nano clay particles attributable to their extreme large surface‐area/particle‐size ratio tend to strongly agglomerate, so there have been many researches for agglomeration reduction by surface modification of nanoparticles .…”

New architectured hybrid sol-gel coatings for wear and corrosion protection of low-carbon steel

“…Among the well-described coatings containing oxide nanoparticles which are essentially deposited on aluminum alloys, some papers deal with coated steel relating to different nanoparticles e.g. Zn [11], Montmorillonite [12], Al 2 O 3 [13,14], ZrO 2 [15,16], SiO 2 [14,15,17,18] distributed in the hybrid matrix. The introduction of the nanoparticles within the hybrid sol may be done either as nanoscale powder [15], synthesized in-situ [16] or colloidal suspension [18].…”

Corrosion Protection of Steel by Epoxy-Organoclay Nanocomposite Coatings

“…However, the pristine epoxy resins exhibit measureable adsorption and permeability of water vapor, which diffuses to the epoxy/steel interface and initiates corrosion of the metal substrate particularly in intensely wet conditions. Therefore, effort has been devoted in recent years to develop epoxy-based protective coatings with good barrier properties, at least with regard to water vapor and oxygen [1][2][3].…”

“…The MMT-based nanocomposites exhibit enhanced physical properties compared to the pristine polymer, such as improved thermal properties (e.g., thermal stability, flame retardant, thermal conductivity), mechanical properties (e.g., mechanical strength, hardness, abrasion resistance), permeability properties (e.g., gas barrier, pervaporation), and corrosion protection properties [1,2,[7][8][9][10][11]. The chemical structure of MMT consists of two tetrahedral silica sheets fused to a central edge-shared octahedral-based sheet of either magnesium or aluminum hydroxide [12].…”

“…The formation of an organophilic environment between the clay layers is critical for the insertion of polymer chains amongst them and the formation of an intercalated structure, which seems to present the greater improvement of barrier properties. Amongst the various polymers for coating applications, epoxy resins lately have evoked intensive studies in the preparation of nanocomposite materials, due to their high tensile strength and modulus, good adhesive properties, good chemical and corrosion resistance, low shrinkage in cure, and excellent dimensional stability [1,8,[15][16][17][18][19].…”