Effects of Different Injection Temperatures and Heat Treatments on Friction and Wear Properties of PEEK/CF Composites
In order to optimize the molding process of polyetheretherketone(PEEK)and improve the wear resistance of the material and expand the range of applications,carbon fiber(CF)is used as reinforcing phase and PEEK/CF composites under different heat treatment processes were prepared at different injection temperature conditions.Tribologic properties of composites are tested by tribo-wear testing machines,and surface analysis and performance tests are performed using a X-ray diffraction,a white light interferometer,and a scanning electron microscope.The results show that the injection temperature and heat treatment process have no effect on the phase of PEEK/CF composites.With the increase of injection temperature,the friction coefficient and wear of the sample surface show a trend of decreasing first and then increasing,while the friction coefficient and wear rate of the sample after tempering are smaller.When the injection temperature is 175℃,the friction coefficient of the tempered material is the lowest,which is 0.091 4,and the wear rate is the lowest,which is 0.106×10-6 mm3/(N·m).The research indicates that appropriate injection temperature and heat treatment can improve the wear reduction and wear resistance of PEEK/CF composites.
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