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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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SEM of GNS-based epoxy resin coating with various content of (A) 0; (B) 0.1 wt %; (C) 0.4 wt %; and (D) 0.7 wt %. The corresponding digital photographs of GNS-based epoxy resin coating are shown in the inset.
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ijms-16-02239-f002: SEM of GNS-based epoxy resin coating with various content of (A) 0; (B) 0.1 wt %; (C) 0.4 wt %; and (D) 0.7 wt %. The corresponding digital photographs of GNS-based epoxy resin coating are shown in the inset.

Mentions: The inset of Figure 2 showed the digital photographs of neat epoxy resin coating and GNS-based epoxy resin coating. One could see that, with incorporation of only 0.1 wt % graphene, the transparent epoxy resin coating became rather dark, indicating the uniform dispersion of graphene sheets in the epoxy resin matrix. With the increase of the doping content, the color of the GNS-based epoxy resin coating became darker and darker. At the same time, the surfaces of GNS-based epoxy resin coating displayed a generally smooth morphology, indicating that the epoxy resin coating blending with graphene were miscible. The GNS-based epoxy resin coating was also characterized by the SEM as shown in Figure 2, too. They clearly showed some micrometer-sized sheets in epoxy resin matrix, in which the averages size of sheets was about 2 μm. In addition to this, it also clearly showed that there were no agglomerate and gaps between graphene and epoxy resin. These results further indicate that the PVP-rGO can be well dispersed in the epoxy resin matrix and have good adhesion with 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)

SEM of GNS-based epoxy resin coating with various content of (A) 0; (B) 0.1 wt %; (C) 0.4 wt %; and (D) 0.7 wt %. The corresponding digital photographs of GNS-based epoxy resin coating are shown in the inset.
© Copyright Policy
Related In: Results  -  Collection

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

ijms-16-02239-f002: SEM of GNS-based epoxy resin coating with various content of (A) 0; (B) 0.1 wt %; (C) 0.4 wt %; and (D) 0.7 wt %. The corresponding digital photographs of GNS-based epoxy resin coating are shown in the inset.
Mentions: The inset of Figure 2 showed the digital photographs of neat epoxy resin coating and GNS-based epoxy resin coating. One could see that, with incorporation of only 0.1 wt % graphene, the transparent epoxy resin coating became rather dark, indicating the uniform dispersion of graphene sheets in the epoxy resin matrix. With the increase of the doping content, the color of the GNS-based epoxy resin coating became darker and darker. At the same time, the surfaces of GNS-based epoxy resin coating displayed a generally smooth morphology, indicating that the epoxy resin coating blending with graphene were miscible. The GNS-based epoxy resin coating was also characterized by the SEM as shown in Figure 2, too. They clearly showed some micrometer-sized sheets in epoxy resin matrix, in which the averages size of sheets was about 2 μm. In addition to this, it also clearly showed that there were no agglomerate and gaps between graphene and epoxy resin. These results further indicate that the PVP-rGO can be well dispersed in the epoxy resin matrix and have good adhesion with 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