Zhang Zhiyi, Zhang Wenhui, Li Diansen, Sun Youyi, Wang Zhuo, Hou Chunling, Chen Lu, Cao Yang, Liu Yaqing
Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, North University of China, Taiyuan 030051, China.
Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, China.
Int J Mol Sci. 2015 Jan 20;16(1):2239-51. doi: 10.3390/ijms16012239.
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.
采用原位合成法制备了基于石墨烯纳米片的环氧树脂涂层（含量分别为0、0.1、0.4和0.7 wt%）。分别使用纳米压痕技术和热重分析研究了聚乙烯吡咯烷酮/还原氧化石墨烯（PVP-rGO）对环氧树脂涂层力学性能和热性能的影响。在0.7 wt%的负载量下，环氧树脂涂层的杨氏模量和热稳定性分别显著提高（约213%和73℃）。此外，通过电化学测量研究了基于石墨烯纳米片的环氧树脂涂层的耐蚀性。结果还表明，基于石墨烯纳米片的环氧树脂涂层的Rrcco（约0.3毫米/年）远低于纯环氧树脂（1.3毫米/年）。因此，该方法为提高聚合物涂层的耐蚀性和机械热稳定性提供了一条新途径，有望应用于机械-热-腐蚀耦合环境中。
