氧化石墨烯改性水性半合成液压支架用浓缩液的制备与性能  

Preparation and properties of graphene oxide modified water-based semi-synthetic concentrated solution for hydraulic support

作　　者：顾丽敏[1] 薛伟 GU Limin;XUE Wei(School of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei,China)

机构地区：[1]河北科技大学化学与制药工程学院,河北石家庄050018

出　　处：《化工进展》2021年第3期1611-1618,共8页Chemical Industry and Engineering Progress

摘　　要：通过化学法对氧化石墨烯(GO)中的羧基进行活化,然后在一定条件下使其与油酸三乙醇胺(MDLO)末端的羟基反应,制备GO接枝改性油酸三乙醇胺酯(MDLO-GO);最后将水、KOH、EDTA混合均匀后再依次加入蓖钾皂、MDLO-GO、乳化剂及消泡剂等,制备得到GO接枝改性半合成液压支架用浓缩液(GO-HDSF)。红外光谱和X射线光电子能谱的测试结果表明GO被成功接枝到MDLO分子链上;此外,其他性能测试结果表明,随GO添加量增多GO-HDSF浓缩液黏度逐渐增大,且耐腐蚀性、润滑性逐渐提高;当GO的添加量为0.004%(质量分数)时,GO-HDSF的耐腐蚀电位增大到83mV,电流密度减小到6.5×10^(−6)A/cm^(2);GO-HDSF的最大无卡咬负荷PB值最大达到了481N。相比于未经氧化石墨烯改性的浓缩液,GO-HDSF的润滑性提高了11.9%,防腐蚀性提高了97.6%,同时耐高温、低温性能也显著提高。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,after evenly mixing water,KOH and EDTA,potassium soap,MDLO-GO,emulsifier and defoamer were added in turn to obtain the graphene oxide modified water-based hydraulic support concentrated solution(GO-HDSF).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 showed that the viscosity,corrosion resistance and lubricity of GO-HDSF were gradually improved with increasing GO addition.When the mass fraction of GO was 0.004%,the corrosion resistance potential of GO-HDSF increased to 83mV and the current density decreased to 6.5×10^(−6)A/cm^(2).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.

关 键 词：氧化石墨烯 改性 润滑性 防腐性 水性浓缩液 

分 类 号：TG147[一般工业技术—材料科学与工程]