纳米介孔碳的制备及其摩擦学性能研究

Synthesis and Tribological Properties Study of Nano-Ordered Mesoporous Carbon

采用两亲性三嵌段共聚物F127为模板剂,以酚醛树脂为碳源,在水热条件下制备了具有高度有序介孔结构的纳米介孔碳。采用XRD、TEM和SEM表征了介孔碳的结构。采用不同的改性剂对介孔碳进行表面修饰并考察其分散稳定性,筛选出适宜的改性剂。利用四球摩擦试验机对比研究基础油和添加质量分数为0.5%改性介孔碳的润滑油的摩擦学性能。结果表明:修饰介孔碳具有优良的摩擦学性能,其摩擦因数较基础油降低了24.7%,磨斑直径降低了44%,P_B提高了26.7%,P_D提高了58.7%。

The ordered mesoporous carbons were synthesized with phenolic resin resol solution as a carbon resource,taking amphipathy triblock copolymer F127 as templates through the hydrothermal method. The phase,morphologies and microstructures were characterized by XRD,TEM and SEM.Mesoporous carbons were modified by different modifiers,and the dispersing properties of the modified mesoporous carbons were investigated to screen out the best modifier. The triboloical performance of0. 5%（ wt） modified mesoporous carbons as lubricant additives in base oil was tested through a fourball tribological testing unit and compared with that of base oil. The results reveal that the modification of mesoporous carbon has excellent tribological property,and the friction coefficient and wear scare diameter of the base oil with 0. 5% modified mesoporous carbons are decreased by 24. 7% and44% respectively,and the compressive capacity PBand the weld load PDare improved by 26. 7% and58. 7% respectively.