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采用水热法制备了Mg-Al-NO3和Mg-Al-SDSO类水滑石。讨论了pH值、十二烷基磺酸钠(SDSO)浓度[c(SDSO)]对Mg-Al-SDSO类水滑石结晶度的影响,利用X射线衍射法、红外光谱分析法、热重–差热分析法对样品的成分、结构及热稳定性进行了表征,结果表明:当pH=11,c(SDSO)=0.1mol/L时可以合成结晶度高的Mg-Al-SDSO类水滑石。比较了Mg-Al-NO3和Mg-Al-SDSO类水滑石的减磨效果,将制备的样品加入到基础油中,用四球摩擦磨损试验机测试了其摩擦学性能,结果表明:含有Mg-Al-NO3和Mg-Al-SDSO类水滑石粉体的润滑油与基础油相比,摩擦因数分别降低了24.2%和28.3%。
Mg-Al-NO3 and Mg-Al-SDSO hydrotalcites were prepared by hydrothermal method. The effects of pH, SDSO concentration [c (SDSO)] on the crystallinity of Mg-Al-SDSO hydrotalcite were discussed. XRD, IR, TG- The composition, structure and thermal stability of the sample were characterized by DTA. The results showed that Mg-Al-SDSO hydrotalcites with high crystallinity can be synthesized when pH = 11, c (SDSO) = 0.1mol / L . The tribological properties of Mg-Al-NO3 and Mg-Al-SDSO hydrotalcites were compared. The prepared samples were added to the base oil and tested for tribological properties by a four-ball friction and wear tester. The results show that the Mg- The friction coefficients of Al-NO3 and Mg-Al-SDSO hydrotalcite powders decreased by 24.2% and 28.3%, respectively, compared with the base oil.