A series of copolymers containing conjugated fluorene groups as a compatibilizer to improve the dispersion of multi-walled carbon nanotubes (MWCNTs) were prepared and used to improve the wear resistance of… Click to show full abstract
A series of copolymers containing conjugated fluorene groups as a compatibilizer to improve the dispersion of multi-walled carbon nanotubes (MWCNTs) were prepared and used to improve the wear resistance of PEEK/GP composites. The solubility of MWCNTs had a maximum at the concentration ratio of 2:1(polymer: MWCNTs). Transmission electron microscopy indicated that polymer-MWCNTs interactions were capable of partially debundling the nanotubes in chloroform, with individual nanotubes or small bundles clearly observed. The tribological properties of PEEK composites incorporating the modified MWCNTs were investigated using a Pin-on-Disc apparatus and a Block-on-Ring apparatus. The PEEK composites had a lower frictional coefficient under Block-on-Ring testing condition, but a lower wear rate was achieved in the Pin-on-Disc test.
               
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