Research on Tribological Behavior of OMMT/Polypropylene Composites

OMMT/PP composites were synthesized through melt intercalation in twin-screw extruder.The effects of the content of OMMT on the hardness,tensile strength and notch impact strength of the composites were investigated.The friction and wear behavior of the composites sliding against GCr15 steel under 250 N was examined on M-2000 test rig in a ring-on-block configuration.The worn surfaces of the composites were examined by scanning electron microscopy.Composites containing 1.5% OMMT exhibited high tensile strength,hardness and much better friction and wear behavior than that of PP matrix.With increasing of OMMT content(0%~4%),wear of the composites was dominated by adhesive wear,abrasive and adhesive wear mixed abrasive wear respectively.