Designing core-shell Cu@Co porous liquid to optimize the mechanical and lubrication performances of fabric liner

In this work, a porous liquid is prepared via turning porous Cu@Co metal-organic framework (MOF) particles into liquid material via covalently grafting corona DC5700 and ionically tethering canopy poly (ethylene glycol)tailed sulfonate (PEGS). The Cu@Co MOF porous liquids present a liquid behavior and preeminent dispersion stability in resin solution. The thermal conductivity of fabric liner (FL) reinforced with Cu@Co Porous liquids (PLs) is enhanced by 90.75% and 85.94% at room temperature and 150 degrees C via constructing effective and continuous heat conduction channel. Also, the Cu@Co MOF porous liquids improve the mechanical properties of FL owing to the dispersion of stress, entanglement between organic shell chain and resin. Importantly, the porous liquids present preeminent friction-reducing and anti-abrasion properties. Thereinto, the decline in the wear rate of Cu@Co PLs/FL attains 33.3%. The Cu@Co MOF particles effectively strengthen the load bearing of fabric liner. It is revealed that the corona-canopy species of Cu@Co PLs can form adsorption layer onto the steel interface via charge action, which is conducive to the generation of a nanostructured tribofilm. In particular, the tribochemical products containing CuO, Cu2O and Co3O4 nanoparticles embedded in the tribofilm boost its lubrication and robustness.