摘要
以聚苯乙烯(PS)微球为致孔剂、介孔二氧化硅纳米管(MSNT)为填充剂来改性多孔聚酰亚胺(PI),设计制备了多孔PI/MSNT复合薄膜,并对其孔结构和形貌进行了表征;在此基础上,以液体石蜡油为存储介质制备了多孔PI/MSNT复合含油润滑薄膜,系统考察了MSNT的添加对多孔PI薄膜的热稳定性、储油性能、力学性能和摩擦学性能的影响.结果表明:与单组分PI含油薄膜相比,MSNT的加入不仅改善了多孔PI基体的热稳定性和力学性能,而且使得复合薄膜的储油性能和摩擦磨损性能均得到了显著提高,证实多孔PI/MSNT复合含油薄膜更适用于高载荷下的摩擦工况.
The porous polyimide/mesoporous silica nanotubes(PI/MSNT)composite films were fabricated by using polystyrene microspheres(PS)as the pore-forming template while MSNT as the additive,whose porous structure and morphology were subsequently characterized by various techniques.On this basis,the liquid paraffin oil was infused into the porous structure of composite films via a vacuum wet impregnation method to prepare oil-containing PI/MSNT composite films.The addition effects of MSNT on thermal stability,oil-storage capacity,mechanical and tribological properties of porous PI/MSNT composite films were investigated in detail,and the results demonstrate that these properties of porous PI were apparently improved upon the addition of MSNT.Specially,the tribological properties of the oil-containing PI/MSNT composite films were better than those of the single-component oil-containing PI film,demonstrating the composite film was more suitable for high-load friction conditions.
作者
贾卫红
马立民
任嗣利
王金清
杨生荣
JIA Weihong;MA Limin;REN Sili;WANG Jinqing;YANG Shengrong(State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Gansu Lanzhou 730000,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Jiangxi Ganzhou 341000,China)
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2020年第4期424-433,共10页
Tribology
基金
国家自然科学基金项目(51675514,51975562)资助。
关键词
介孔二氧化硅纳米管
复合薄膜
多孔聚酰亚胺
储油材料
摩擦磨损
mesoporous silica nanotubes
porous polyimide
composite films
oil-containing materials
friction and wear
作者简介
Corresponding author:王金清,E-mail:jqwang@licp.cas.cn,Tel:+86-931-4968076.
