Stable dispersibility of bentonite-type additive with gemini ionic liquid intercalation structure for oil-based drilling  

作　　者：Chaoyang ZHANG Rui DONG Xingang WANG Yijing LIANG Ming ZHANG Qiangliang YU Zhongping TANG Huiying LV Liping WANG Meirong CAI Feng ZHOU Weimin LIU 

机构地区：[1]State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100039,China [3]PetroChina Lanzhou Lubricating Oil R&D Institute,Lanzhou 730060,China

出　　处：《Friction》2023年第2期201-215,共15页摩擦（英文版）

基　　金：the funding support of the National Natural Science Foundation of China(Nos.52075524,21972153,and U21A20280);Youth Innovation Promotion Association,Chinese Academy of Scieneces(Nos.2022429 and 2018454);Gansu Province Science and Technology Plan(Nos.20JR10RA060 and 20JR10RA048);the Lanzhou Institute of Chemical Physics(LICP)Cooperation Foundation for Young Scholars(No.HZJJ21-06);Key Research Projects of Frontier Science of Chinese Academy of Sciences(No.QYZDY-SSW-JSC013).

摘　　要：In this study,the direct intercalation of gemini ionic liquids(ILs)with different alkyl chains into the bentonite(BT)interlayer as a high-performance lubricating additive for base oil 500SN was investigated.The purpose of modifying BT with an IL is to improve the dispersion stability and lubricity of BT in lubricating oil.The dispersibility and tribological properties of IL–BT as oil-based additives for 500SN depend on the increase in interlamellar space in BT and improve as the chain length is increased.More importantly,the IL–BT nanomaterial outperforms individual BT in improving wear resistance,owing to its sheet layers were deformed and sprawled in furrows along the metal surface,thereby resulting in low surface adhesion.Because of its excellent lubrication performance,IL-modified BT is a potential candidate for the main component of drilling fluid.It can be used as a lubricating additive in oil drilling and oil well construction to reduce equipment damage and ensure the normal operation of equipments.

关 键 词：ionic liquid modified bentonite NANOMATERIAL oil-based additive 

分 类 号：TE624.82[石油与天然气工程—油气加工工程]