Spray-coated epoxy barrier films containing high aspect ratio functionalized graphene nanosheets

Li, Peng; Huang, Tzu-Ling; White, Kevin L.; Hawkins, Spencer; Kotaki, Masaya; Nishimura, Riichi; Sue, Hung‐Jue

doi:10.1039/c5ra15363h

Cited by 18 publications

(9 citation statements)

References 50 publications

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“…Polymer/ller nanocomposites have received immense attention [8][9][10][11] due to their excellent properties, low cost, and lower concentrations needed compared to conventional materials. 12 Their barrier and anticorrosion properties can be further improved by the addition of a variety of llers, such as clays, [13][14][15][16][17] boron nitride nanosheets, 18,19 carbon nanotubes, 20,21 graphene nanosheets, 22,23 and alumina nanosheets, 24 into polymer preparations. Recently, nanocomposites of a-zirconium phosphate (ZrP) and polymers have been studied for use as anti-corrosion coatings due to their good gas barrier properties.…”

Section: Introductionmentioning

confidence: 99%

Advanced anti-corrosion coatings prepared from α-zirconium phosphate/polyurethane nanocomposites

Huang

Lai

et al. 2017

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Advanced anti-corrosion coatings prepared from α-zirconium phosphate/polyurethane nanocomposites

Huang

Lai

et al. 2017

RSC Adv.

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“…This improvement in thermal stability originated from layered structure of Cloisite 30B, which barricades hot volatile gasses of matrix decomposition. Besides, two models, namely, “barrier model” and “nanoconfinement theory,” describe this thermal improvement. In former, thermal decomposition initiates from the surface and results in increasing the content of nanosheets as a protective layer.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of high thermal stable cured novolac/Cloisite 30B nanocomposites by chemical modification of resin structure

Javanbakht

Razavi

Salami‐Kalajahi

et al. 2019

Polymers for Advanced Techs

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Cloisite 30B as a modified kind of nanoclay was utilized for the formation of 3D network based on novolac resin with high thermal stable properties. Two types of phenolic resins including neat novolac (NR) and modified novolac resin were used to create a compatible matrix with nanoclay. For this purpose, NR modified with (3chloropropyl)triethoxysilane (CPTES) to form SiNR. For improvement of thermal behaviors, Cloisite 30B was dispersed in matrix via ultrasonic waves and cured with hexamethylenetetramine (HMTA) to form 3D network. X-ray diffraction (XRD) analysis was used to measure the d-spacing in intercalated systems and results indicated the optimum amount of clay for appropriate thermal properties. Investigation of the thermal properties of the samples by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) showed that the presence of Cloisite 30B in matrix resulted in much higher thermal stability and char yield with respect to modification of novolac resin originated from formation of 3D Si-O-Si network. Also, cured modified resin and its nanocomposites showed much higher thermal stability than cured NR and its nanocomposites. Such nanocomposite materials with high thermal stability have potential applications in advanced fields such electronic, industrial molds, coatings, adhesives, and aerospace composites.

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“…In their process a solvent‐based epoxy system was blended together with chemically reduced graphite oxide and the resulting graphene oxide dispersion was coated onto a polyimide film by means of spraying. At 3.6 vol% FG content and a coating layer thickness of 21 µm the gas permeability was reduced to 12% with respect to the polyimide film . Vaezi et al.…”

Section: Introductionmentioning

confidence: 97%

Mechanochemically Carboxylated Multilayer Graphene Nanoplatelets as Functionalized Carbon Nanofillers for Electrically Conductive Epoxy Spray Coatings

Gatti

Burk

Gliem

et al. 2019

Macro Materials & Eng

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Dry ball milling of graphite under CO2 pressure in a planetary ball mill affords carboxylated multilayer graphene nanoplatelets as carbon nanofillers (MFG‐CO2) for carbon/epoxy spray coatings combining electrical conductivity up to 0.09 S cm−1 with excellent adhesion and improved toughness. As confirmed by µCT‐imaging, the two‐stage homogenization by means of a speed mixer with subsequent shearing in a three‐roll mill uniformly disperses up to 60 wt% MFG‐CO2 in aqueous emulsions of epoxy resins and hardener without impairing spray coating. The MFG‐CO2 content governs surface roughness, as determined by 3D laser microscopy, gloss, electrical conductivity, and toughness without adversely affecting excellent adhesion. Mechanochemical tailoring MFG nanofillers holds great promise for the development of advanced epoxy spray coatings exhibiting an improved balance of thermooxidative, chemical and environmental stability, electrical and thermal conductivity, toughness, corrosion, and barrier resistance.

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Spray-coated epoxy barrier films containing high aspect ratio functionalized graphene nanosheets

Abstract: Epoxy nanocomposite spray-coatings containing large aspect ratio modified graphene (MG) were successfully prepared in a facile manner.

Cited by 18 publications

References 50 publications

Advanced anti-corrosion coatings prepared from α-zirconium phosphate/polyurethane nanocomposites

Advanced anti-corrosion coatings prepared from α-zirconium phosphate/polyurethane nanocomposites

Fabrication of high thermal stable cured novolac/Cloisite 30B nanocomposites by chemical modification of resin structure

Mechanochemically Carboxylated Multilayer Graphene Nanoplatelets as Functionalized Carbon Nanofillers for Electrically Conductive Epoxy Spray Coatings

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