Fabrication of CNTs/Al composite with enhanced dispersion pre-treatment

摘要

Carbon nanotubes (CNTs) were considered as perfect reinforcements with excellent strength, modulus and physical properties. Dispersing CNTs into matrix, especially the metal matrix was a challenge work due to CNTs clusters and poor wettability. An enhanced pre-treatment combined with Sodium dodecyl benzene sulfonate (SDBS) treatment and Natural rubber (NR) treatment was used to disperse CNTs. The results demonstrated that SDBS could effectively de-bundle CNTs and NR could stable the SDBS treated CNTs. The 0.5 wt.% pre-treated CNTs reinforced 2009Al was fabricated in powder metallurgy route. The strength was enhanced about 20%, which implied good load transfer efficiency of the CNTs.