碳纤维聚醚醚酮树脂基复合材料的制备及摩擦磨损性能研究

Study on preparation and frictional wear performance for carbon fiber composite of polyether ketone resin

聚醚醚酮(PEEK)具有优良的耐热性、阻燃性和电绝缘性,广泛应用于汽车部件、半导体和热压缩级等领域。为了实现PEEK的高性能化,使之可应用于阀片、密封圈等对耐磨性有较高要求的领域,替代金属材料,通过热压法成功制得PEEK/氧化石墨烯(GO)-氧化锌(ZnO)/碳纤维(CF)(PEEK/GO-ZnO/CF)复合材料。首先将GO与ZnO通过高温反应釜在180℃反应12h,成功对石墨烯进行改性。将改性后的石墨烯与PEEK共混与CF编织布通过热压成型。通过对该复合材料的摩擦磨损性能、热稳定性、机械性能研究,加入经改性的GO含量为1.5%(wt,质量分数)条件下,制得的PEEK/GO-ZnO/CF复合材料具有较好的综合性能,在25℃条件下摩擦磨损率为13×10^(-6)mm^3/Nm,拉伸强度达到265.0MPa,弯曲强度达到262.7MPa。

Poly（ether ether ketone）was widely used in automotive parts,semiconductor manufacturing,compressor sections and other related fields,due to its excellent heat resistance,flame retardancy and electrical insulation.In order to realize the high performance of PEEK,it can be applied to the areas where the requirements for wear resistance were high,such as valve plates and sealing rings,to achieve the purpose of replacing metal materials.PEEK/graphene oxide-zinc oxide/carbon fiber composites were successfully prepared by hot-press molding.First,GO and Zno were reacted at 180℃for 12 hours in a high-temperature reactor,then the modified graphene oxide and PEEK were mixed and then heat-pressed with a carbon fiber plain weave.The friction and wear properties,thermal stability and mechanical properties of composites were investigated.The test results showed that the manufactured PEEK/GO-ZnO/CF composites presented excellent comprehensive properties when the modified graphene content reached1.5 wt%.Under the condition of 25℃,the wear rate was 13×10-6mm3/Nm,tensile strength reached 265 MPa,bending strength was 262.7 MPa.