Advanced anticorrosive coatings prepared from electroactive epoxy–SiO2 hybrid nanocomposite materials

Polymer nanocomposite coatings

“…[148][149][150] The good dispersion of these nanofi llers in the polymer matrix leads to an effective increase in the length of the diffusion pathways for oxygen gas and water vapour and to a decrease in the gas permeability of the coatings, as shown in Fig. 18.16 .…”

“…(b) Diffusion pathway of oxygen gas in polymer nanocomposites. [148][149][150] The wear mechanisms of epoxy and particulate-fi lled epoxy matrix composites under the pin-on-disc condition were studied by Durand et al 152 During wear testing, the unfi lled epoxy exhibited brittle behaviour and cracks formed perpendicular to the sliding direction. Therefore, material waves were created and wear debris was produced ( Fig.…”

Electroactive Polymer-Based Anticorrosive Coatings

“…Recently, EAPs, EAPNs, and HEAPs/SEAPs used as enhanced anticorrosion coatings have been reported by Yeh et al [19][20][21][22][23][24][25][26][27][28][29][30] For example, EAPs (e.g., polyimide, 19 epoxy, 20 polyurethane, 21 polyamide, 22 and polyurea 23 ), EAPNs (e.g., polyimide-clay, 24 polyimide-TiO 2 , 25 epoxy-SiO 2 , 26 and polyanilie-graphene 27 ), and HEAPs/SEAPs (e.g., epoxy, 28-30 PANI, 31 and polyimide 32 ) for making a series of novel advanced anticorrosion coatings based on a series of electrochemical corrosion parameter measurements of corrosion potential, polarization resistance, corrosion current, and EIS at room temperature.…”

Electroactive polyurea/CNT composite-based electrode for detection of vitamin C

“…Experimental results exhibited that the dielectric properties of EPS doped with large, organic acids resulted in increases of up to an order of magnitude in permittivity and energy storage density relative to pure polystyrene, while maintaining a relatively low dielectric loss, especially in the high frequency range. Yeh and coworkers prepared many electroactive polymers such as electroactive polyimide [19], electroactive epoxy [20], electroactive polyamide [21,22], electroactive polyurea [23] and electroactive poly(azine-azo) [24] as anticorrosion coating materials and photoactive materials. Recently, many researchers utilized electroactive polymers serving as sensing materials.…”