关键词: 氧化石墨烯, 改性, 润滑性, 防腐性, 水性浓缩液

Abstract: The carboxyl group in graphene oxide (GO) was activated by chemical method, and then GO graft modified triethanolamine oleate (MDLO-GO) was prepared through the reaction of GO and the hydroxyl group at the end of MDLO under certain conditions; Finally, the graphene oxide modified water-based hydraulic support concentrated solution (GO-HDSF) was obtained by H2O、KOH、EDTA、castor soap、MDLO-GO、emulsifiers and defoamer were mixed together. The structure of MDLO-GO was confirmed by infrared spectroscopy and X-ray photoelectron spectroscopy, which proved that GO was successfully grafted to the MDLO molecular chain. The experimental results show that the viscosity、corrosion resistance and lubricity of GO-HDSF were gradually improved with the increasing of GO addition; when the mass fraction of GO was 0.004%, the corrosion resistance potential of GO-HDSF increased to 83 mV, and the current density decreased to 6.5E-6A/cm2; the maximum without bite load (PB) value of GO-HDSF reached to 481N. The lubricity of GO-HDSF was increased by 11.9% and the corrosion resistance was increased by 97.6% compared with the unmodified concentrated solution. At the same time, the high and low temperature resistance performance was also significantly improved respectively.

Key words: graphene oxide, modification, lubricity, corrosion resistance, concentrated solution