The scroll compressor seal wears seriously in the working process,resulting in the scroll compressor life reduction.The PEEK material was modified by C and PI,and then mixed proportionally by hot press at 365℃to obtain C-PI-PEEK material.The PEEK material and the modified material C-PI-PEEK were paired with 45 steel balls respectively,and the friction experiment was carried out by CFT-I spherical friction testing machine,and the wear properties of the two materials were compared under different loads.At the same time,the wear mechanism of modified C-PI-PEEK material under different loads was studied,and the formation rule of transfer film on the friction surface was analyzed by scanning electron microscopy(SEM/EDS)and 3D laser scanning electron microscopy.The experimental results show that the modified C-PI-PEEK composite has lower roughness and higher hardness than pure PEEK.The modified C-PI-PEEK composite has little friction coefficient and low wear rate under different loads.With the increase of load,the wear mecha-nism of the C-PI-PEEK composite changes from fatigue wear to adhesive wear and abrasive wear,accompanied by oxidation wear.
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