王陈向,闫嘉昕,范利锋,李帅强.改性纳米坡缕石在油润滑中的减摩抗磨性能研究[J].表面技术,2019,48(12):218-225. WANG Chen-xiang,YAN Jia-xin,FAN Li-feng,LI Shuai-qiang.Anti-friction and Anti-wear Performance of Modified Nano-palygorskite in Oil[J].Surface Technology,2019,48(12):218-225 |
改性纳米坡缕石在油润滑中的减摩抗磨性能研究 |
Anti-friction and Anti-wear Performance of Modified Nano-palygorskite in Oil |
投稿时间:2019-01-27 修订日期:2019-12-20 |
DOI:10.16490/j.cnki.issn.1001-3660.2019.12.026 |
中文关键词: 纳米坡缕石 表面改性 润滑油添加剂 减摩抗磨性能 自修复 |
英文关键词:nano-palygorskite surface modification lubricating oil additives anti-friction and anti-wear property self-repairing |
基金项目:内蒙古自治区自然科学基金项目(2017BS0502);内蒙古大学高层次人才引进项目(5165169,5185146) |
|
Author | Institution |
WANG Chen-xiang | 1.Inner Mongolia Engineering Research Center for Urban Transportation Data Science and Applications,Transportation Institute, Inner Mongolia University, Hohhot 010070, China |
YAN Jia-xin | 1.Inner Mongolia Engineering Research Center for Urban Transportation Data Science and Applications,Transportation Institute, Inner Mongolia University, Hohhot 010070, China |
FAN Li-feng | 1.Inner Mongolia Engineering Research Center for Urban Transportation Data Science and Applications,Transportation Institute, Inner Mongolia University, Hohhot 010070, China |
LI Shuai-qiang | 1.Inner Mongolia Engineering Research Center for Urban Transportation Data Science and Applications,Transportation Institute, Inner Mongolia University, Hohhot 010070, China; 2.China Pingmeishenma Group, Pingdingshan 467000, China |
|
摘要点击次数: |
全文下载次数: |
中文摘要: |
目的 探索不同改性剂对纳米坡缕石的表面修饰效果,探究其在油润滑中的减摩抗磨和自修复机理。方法 以油酸和钛酸酯作为改性剂对纳米坡缕石进行表面修饰,采用沉降法和透射电子显微镜(TEM)表征改性效果。将选择的改性剂和纳米坡缕石放入球磨机内在线修饰,制备成润滑油添加剂并将其超声分散于纯基础油150N中,形成润滑油分散体系。采用环-盘式摩擦磨损试验机对其摩擦性能进行考察,通过金相显微镜、扫描电子显微镜(SEM)、能量色散谱仪(EDS)进行微观结构观察与分析,并探究其润滑及自修复机理。结果 采用油酸修饰的纳米坡缕石满足润滑油行业的要求,可显著改善润滑油的摩擦学性能。与纯基础油相比,当添加剂含量为3.0%时,45#钢摩擦副磨损表面形成了一层含多种元素的复合陶瓷自修复膜,平均摩擦系数降低了31.3%,磨损量减少了16.0%。结论 纳米坡缕石添加剂可随油液流动智能吸附于摩擦界面,阻止摩擦副之间的直接接触,产生纳米滚珠效应。同时,随着界面滑动发生摩擦化学反应生成自修复膜,填补犁沟和划痕,在纳米滚珠和自修复膜共同作用下达到减摩抗磨的效果。 |
英文摘要: |
The work aims to investigate the modification effects of different modifiers on nano-palygorskite surface and explore their anti-friction and anti-wear performance and self-repairing mechanism in oil lubrication. Oleic acid and titanate were selected as the modifiers to modify the nano-palygorskite and the modification effect was evaluated by sedimentation experiments and transmission electron microscope (TEM). The pre-selected modifier and the nano-palygorskite were put in a ball millfor online modification to prepare lubricating oil additive. Then the nano-palygorskite additive was dispersed into base oil 150N through ultrasonic treatment to obtain the final lubricating oil dispersion. After that, the tribological properties of nano-palygorskite additive were tested by a ring-on-disk tribometer. The microstructure was observed and analyzed by metallographic microscope, scanning electronic microscope (SEM) and energy dispersive spectrometry (EDS), and the lubrication and self-repairing mechanisms were also explored. The nano-palygorskite modified by oleic acid could meet the requirements of the lubricant industry and significantly improved the tribological performance of lubricating oil. Specially, when 3.0wt.% of nano-palygorskite additive was introduced, the average friction coefficient and wear mass loss of 45# steel friction pair were reduced by 31.3% and 16.0% respectively, due to the formation of multiple elements-based composite ceramic self-repairing films. Nano-palygorskite additive can be intelligently adsorbed to the frictional interface along with the flowing oil and generates a nano-ball effect by avoiding the direct contact between friction pairs. Simultaneously, the friction-induced furrows and scratches are also filled by the self-repairing films during the interface sliding process. The nano-ball effect and the self-repairing film can work together to achieve the excellent friction-reducing and wear-resisting effect. |
查看全文 查看/发表评论 下载PDF阅读器 |
关闭 |
|
|
|