posted on 2024-02-15, 21:30authored byXiaozhi Zhang, Shenghua Xue, Yaojie Yan, Shujuan Liu, Qian Ye, Feng Zhou
In
this work, the functionalized covalent organic framework (COF)
was prepared via a convenient ball milling process. The aldehyde group
terminated COF-F reacted with amino thiadiazole in the ball milling
jar under mechanical forces; hence, the thiadiazole functionalized
COF-F was obtained and denoted as Thdz@COF-F. The as-prepared Thdz@COF-F
serves as an oil-based lubricant additive and exhibits remarkable
tribological properties, which can reduce the average friction coefficient
of base oil from 0.169 to 0.102 and decrease the wear volume by 87.0%.
The antifriction and antiwear performances are mainly due to the repairing
effect of Thdz@COF-F nanoparticles and the protective tribo-film that
averts the direct contact of friction pairs. In addition, through
the ball milling method, triazole and thiazole functionalized COF-F
were also prepared and represented good lubrication performance, demonstrating
the feasibility of this mechanochemical synthesis method for functionalized
COFs.