CAJ | 학술논문

将KH550偶联剂修饰的纳米蒙脱石和纳米坡缕石，分别按质量比3％添加到150N基础油中制备2种纳米润滑油分散体系，用激光粒度分析仪、TEM、IR表征纳米添加剂的分散稳定性，在MMU-10G摩擦磨损试验机上测试2种纳米润滑油对45＃钢的减摩抗磨性能，用SEM和EDX等分析摩擦试样表面成分与形貌的变化及影响摩擦学性能的机制。结果表明：纳米蒙脱石平均粒径较小，在150N基础油中分散更稳定；2种纳米润滑油相比纯基础油润滑时的平均摩擦因数和磨损量均明显下降，其中纳米蒙脱石润滑油的抗磨减摩性能最好；2种纳米润滑油润滑时摩擦试样表面分别生成了含蒙脱石和坡缕石特征元素的自修复膜层，其中蒙脱石特征元素含量相对较高，说明纳米蒙脱石摩擦学性能更好。
장KH550우련제수식적납미몽탈석화납미파루석，분별안질량비3％첨가도150N기출유중제비2충납미윤활유분산체계，용격광립도분석의、TEM、IR표정납미첨가제적분산은정성，재MMU-10G마찰마손시험궤상측시2충납미윤활유대45＃강적감마항마성능，용SEM화EDX등분석마찰시양표면성분여형모적변화급영향마찰학성능적궤제。결과표명：납미몽탈석평균립경교소，재150N기출유중분산경은정；2충납미윤활유상비순기출유윤활시적평균마찰인수화마손량균명현하강，기중납미몽탈석윤활유적항마감마성능최호；2충납미윤활유윤활시마찰시양표면분별생성료함몽탈석화파루석특정원소적자수복막층，기중몽탈석특정원소함량상대교고，설명납미몽탈석마찰학성능경호。
The nano lubricating oil dispersion systems were prepared by adding 3% modified nano-montmorillonite (nano-MMT)and nano-palygorskite (nano-P)by coupling agent KH550 into the 150N base oil,and the dispersion effect of nano-MMT and nano-P in 150N base oil was analyzed by laser particle size analyzer,TEM and IR.The anti-wear and friction reducing behaviors of the nano lubricating oils were investigated on the MMU-10G abrasive-wear tester with 45 steel as tribo-pairs,and the morphology and the element of the worn surfaces were analyzed by SEM and EDX.The results show that the modified nano-MMT has smaller grain size than nano-P,which has better dispersion stability in 150N base oil.The average friction coefficient and the wear mass loss of the 45 steel tribo-pairs are declined in the nano lubricating oil dispersion systems compared with the base oil system,and the nano-MMT lubricating oil has the best anti-wear and friction reducing properties.The self-repairing films that contain the characteristic elements of montmorillonite and paly-gorskite are formed on the samples surface when lubricated by nano-MMT and nano-P lubricating oils separately,and the content of montmorillonite characteristic elements is relatively high,indicating that the nano-MMT lubricant additive has better tribological properties to 45 steel tribo-pairs.