Friction and Wear Properties for PA66/PTFE Composite

All specimens of Polyamide66(PA66)/polytetrafluoroethylene(PTFE)composite was prepared by mechanical blending.The friction and wear properties of PA66/PTFE composite were studied.The worn surfaces of the composite was observed by means of scanning electron microscopy(SEM).The results showed that the friction and wear properties of PA66 were greatly improved with the addition of PTFE.when the mass fraction of PTFE was 9 % ,the wear weight only being 43 % of the wear weight of pure PA66,the friction coefficient only 57 %.So it was the optimum.The observation by SEM revealed the main wear mode of the blend was adhesive wear and particle abrasion.It was found that the dispersed phase PTFE could fibrillated in the blend.