石墨烯量子点(GQDs)制备层片状二硫化钼(MoS_(2))的产物分析及其对环氧树脂涂层性能的影响

Preparation of Lamellar MoS via Graphene Quantum Dots and Its Influence on the Properties of Epoxy Resin Coating

通过水热法和液相剥离法实现了用石墨烯量子点(GQDs)制备层片状二硫化钼(MoS_(2))[1],得到了带有GQDs负载的层片状MoS_(2)的杂化材料,同时还获得了二硫化钼量子点。采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、紫外吸收和荧光光谱仪对产物MoS_(2)进行了表征。利用硅烷偶联剂KH560对GQDs-MoS_(2)层状材料进行表面改性处理,然后与环氧树脂进行复合,制得改性环氧树脂(EP)复合涂层(GQDs-MoS_(2)/EP)。通过盐雾试验、电化学阻抗谱(EIS)、极化曲线测试分析了GQDs-MoS_(2)/EP的耐腐蚀性。结果表明,GQDs-MoS_(2)/EP复合涂层与纯的环氧树脂涂层相比,抗腐蚀能力得到了一定的提高。

By hydrothermal method and liquid phase stripping, graphene quantum dots(GQDs) were used to prepare laminated MoS_(2). Hybrid materials of laminated MoS_(2) loading with GQDs were obtained, and molybdenum disulfide quantum dots were also obtained. The products were characterized by scanning electron microscope(SEM), transmission electron microscope(TEM), ultraviolet absorption and fluorescence spectroscopy. GQDs-MoS_(2)/EP(epoxy resin) composite coating was prepared by surface modification of GQDs-MoS_(2) layer material with silane coupling agent of KH560 and then compounded with epoxy resin. The corrosion resistance of the composite coating was analyzed by salt spray test, electrochemical impedance spectroscopy(EIS) and polarization curve test. The results showed that compared to the pure epoxy resin coating, the corrosion resistance of GQDs-MoS_(2)/EP composite coating was improved.