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Mechanical and anticorrosive properties of graphene/epoxy resin composites coating prepared by in-situ method.

Zhang Z, Zhang W, Li D, Sun Y, Wang Z, Hou C, Chen L, Cao Y, Liu Y - Int J Mol Sci (2015)

Bottom Line: The graphene nanosheets-based epoxy resin coating (0, 0.1, 0.4 and 0.7 wt %) was prepared by a situ-synthesis method.The effect of polyvinylpyrrolidone/reduced graphene oxide (PVP-rGO) on mechanical and thermal properties of epoxy resin coating was investigated using nanoindentation technique and thermogravimetric analysis, respectively.The results showed also that the Rrcco (ca. 0.3 mm/year) of graphene nanosheets-based epoxy resin coating was far lower than neat epoxy resin (1.3 mm/year).

View Article: PubMed Central - PubMed

Affiliation: Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, North University of China, Taiyuan 030051, China. zhangY@163.com.

ABSTRACT
The graphene nanosheets-based epoxy resin coating (0, 0.1, 0.4 and 0.7 wt %) was prepared by a situ-synthesis method. The effect of polyvinylpyrrolidone/reduced graphene oxide (PVP-rGO) on mechanical and thermal properties of epoxy resin coating was investigated using nanoindentation technique and thermogravimetric analysis, respectively. A significant enhancement (ca. 213% and 73 °C) in the Young modulus and thermal stability of epoxy resin coating was obtained at a loading of 0.7 wt %, respectively. Furthermore, the erosion resistance of graphene nanosheets-based epoxy resin coating was investigated by electrochemical measurement. The results showed also that the Rrcco (ca. 0.3 mm/year) of graphene nanosheets-based epoxy resin coating was far lower than neat epoxy resin (1.3 mm/year). Thus, this approach provides a novel route for improving erosion resistance and mechanical-thermal stability of polymers coating, which is expected to be used in mechanical-thermal-corrosion coupling environments.

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(A) Raman spectra; and (B) AFM of GNS-based epoxy resin coating.
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ijms-16-02239-f001: (A) Raman spectra; and (B) AFM of GNS-based epoxy resin coating.

Mentions: The typical Raman spectra of GNS-based epoxy resin coating were shown in Figure 1A. The integrated intensity over the spectral ranges 1250~1450 and 1500~1700 cm−1 were attributed to the location of the carbon-related D peak and the location of the carbon-related graphene peak, indicating the dispersion of the graphene in the epoxy resin matrix [15]. The GNS-based epoxy resin coating was further characterized by the atomic force microscopic (AFM) measurements as shown in Figure 1B. It clearly shows some micrometer-sized sheets in epoxy resin matrix, which were assigned to graphene sheets. At the same time, it also clearly shows a smooth surface and no aggregates for the polymer coating. These results confirm the formation of GNS-based epoxy resin coating, in which the graphene sheet demonstrates good dispersion in the epoxy resin matrix.


Mechanical and anticorrosive properties of graphene/epoxy resin composites coating prepared by in-situ method.

Zhang Z, Zhang W, Li D, Sun Y, Wang Z, Hou C, Chen L, Cao Y, Liu Y - Int J Mol Sci (2015)

(A) Raman spectra; and (B) AFM of GNS-based epoxy resin coating.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4307360&req=5

ijms-16-02239-f001: (A) Raman spectra; and (B) AFM of GNS-based epoxy resin coating.
Mentions: The typical Raman spectra of GNS-based epoxy resin coating were shown in Figure 1A. The integrated intensity over the spectral ranges 1250~1450 and 1500~1700 cm−1 were attributed to the location of the carbon-related D peak and the location of the carbon-related graphene peak, indicating the dispersion of the graphene in the epoxy resin matrix [15]. The GNS-based epoxy resin coating was further characterized by the atomic force microscopic (AFM) measurements as shown in Figure 1B. It clearly shows some micrometer-sized sheets in epoxy resin matrix, which were assigned to graphene sheets. At the same time, it also clearly shows a smooth surface and no aggregates for the polymer coating. These results confirm the formation of GNS-based epoxy resin coating, in which the graphene sheet demonstrates good dispersion in the epoxy resin matrix.

Bottom Line: The graphene nanosheets-based epoxy resin coating (0, 0.1, 0.4 and 0.7 wt %) was prepared by a situ-synthesis method.The effect of polyvinylpyrrolidone/reduced graphene oxide (PVP-rGO) on mechanical and thermal properties of epoxy resin coating was investigated using nanoindentation technique and thermogravimetric analysis, respectively.The results showed also that the Rrcco (ca. 0.3 mm/year) of graphene nanosheets-based epoxy resin coating was far lower than neat epoxy resin (1.3 mm/year).

View Article: PubMed Central - PubMed

Affiliation: Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, North University of China, Taiyuan 030051, China. zhangY@163.com.

ABSTRACT
The graphene nanosheets-based epoxy resin coating (0, 0.1, 0.4 and 0.7 wt %) was prepared by a situ-synthesis method. The effect of polyvinylpyrrolidone/reduced graphene oxide (PVP-rGO) on mechanical and thermal properties of epoxy resin coating was investigated using nanoindentation technique and thermogravimetric analysis, respectively. A significant enhancement (ca. 213% and 73 °C) in the Young modulus and thermal stability of epoxy resin coating was obtained at a loading of 0.7 wt %, respectively. Furthermore, the erosion resistance of graphene nanosheets-based epoxy resin coating was investigated by electrochemical measurement. The results showed also that the Rrcco (ca. 0.3 mm/year) of graphene nanosheets-based epoxy resin coating was far lower than neat epoxy resin (1.3 mm/year). Thus, this approach provides a novel route for improving erosion resistance and mechanical-thermal stability of polymers coating, which is expected to be used in mechanical-thermal-corrosion coupling environments.

Show MeSH
Related in: MedlinePlus