提高片层弯曲率增强纳米二硫化钼润滑性能的研究  

On the Heightening Curving Extent of Layered Structure to Improve Lubricating Performance of Nano-MoS_(2)

作　　者：仲崇龙 胡坤宏[1] 李志祥 秦广超[1] ZHONG Chonglong;HU Kunhong;LI Zhixiang;QIN Guangchao(School of Energy Materials and Chemical Engineering,Hefei University,Hefei 230601,China)

机构地区：[1]合肥学院能源材料与化工学院,合肥230601

出　　处：《合肥学院学报（综合版）》2023年第2期54-59,共6页Journal of Hefei University：Comprehensive ED

基　　金：国家自然科学基金面上项目“二硫化钼纳米润滑剂的原位催化分散行为及其与发动机碳烟之间的润滑拮抗机制”(52075144);安徽省重点研究与开发计划项目“高活性长效抗菌MoS_(2)/TiO_(2)改性医用包装膜的研发及产业化应用”(202104a05020065)。

摘　　要：片状结构的二硫化钼(MoS_(2))纳米微粒具有优良的润滑性能,通过一些方法还可进一步提升它的性能。利用钼酸钠与硫化钠在强酸性溶液中反应制备片状MoS_(2)纳米微粒,通过在反应体系中添加N,N-二甲基乙酰胺充当形态诱导剂,可以增加MoS_(2)纳米片层的弯曲率,润滑性能也相应得到改善。形态诱导剂的加入,因氢键和静电作用产生了类似模板剂的效果,促使产物片层沿弯曲方式生长。高频往复摩擦试验证明,在聚ɑ-烯烃基础油中,高弯曲的MoS_(2)纳米片层结构可提升减摩性能与抗磨性能分别达10%与17%左右。Sheet-like nanosized molybdenum disulfide(nano-MoS_(2))has good lubrication properties which can be further improved by some modification methods.Sheet-like nano-MoS_(2) has been pre-pared by the reaction of sodium molybdate and sodium sulfide in a strongly acidic solution.After add-ing N,N-dimethylacetamide to the reaction system as morphological inducers,the sheet curvature of nano-MoS_(2) has been increased,resulted in an improved lubrication performance.The addition of N,N-dimethylacetamide promotes the MoS_(2) sheets to grow along a curving fashion derived from the hy-drogen bonding and electrostatic interactions between N,N-dimethylacetamide and H2O.The high fre-quency reciprocating rig tests show that the as-prepared nano-MoS_(2) with a high sheet curvature can improve friction reduction by 10%and wear resistance by 17%in poly-ɑ-olefin base oil,respectively.

关 键 词：二硫化钼 纳米微粒 形态结构 润滑性能 

分 类 号：TQ125.18[化学工程—无机化工]