Nanolubricants, thanks to their ability to reduce friction and wear, are increasingly studied in the transport and automotive sectors. These systems are generally produced with a two-step procedure by dispersing nanoparticles into base oils. Very recently, one-step methods have received increasing attention for the production of highly stable nanosuspensions at lower cost. Degradation-decomposition of the base oil can however occur during the synthesis affecting the final performances. In this work, copper-based nanolubricants were produced using a new procedure that preserves the base oil from the degradation induced by the synthesis and allows producing highly stable nanolubricant. The produced fluid showed a monodisperse distribution of nanometric particles and a good stability up to at least 60 days from its production. The as-produced nanolubricants showed notable performance reducing the friction coefficient even up to 32.7% for Cu concentration of 0.01 vol% at 80°C.
Easy preparation method of stable copper-based nanoparticle suspensions in lubricant engine oil
Gondolini A;Mercadelli E;Zin V;Barison S;Sanson A
2020
Abstract
Nanolubricants, thanks to their ability to reduce friction and wear, are increasingly studied in the transport and automotive sectors. These systems are generally produced with a two-step procedure by dispersing nanoparticles into base oils. Very recently, one-step methods have received increasing attention for the production of highly stable nanosuspensions at lower cost. Degradation-decomposition of the base oil can however occur during the synthesis affecting the final performances. In this work, copper-based nanolubricants were produced using a new procedure that preserves the base oil from the degradation induced by the synthesis and allows producing highly stable nanolubricant. The produced fluid showed a monodisperse distribution of nanometric particles and a good stability up to at least 60 days from its production. The as-produced nanolubricants showed notable performance reducing the friction coefficient even up to 32.7% for Cu concentration of 0.01 vol% at 80°C.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.