烧结温度对快速热压烧结PEEK材料结构及力学、热学和摩擦学性能的影响  

Effect of sintering temperature on structure and mechanical,thermal and tribological properties of PEEK material prepared by rapid hot pressing sintering

作　　者：逄显娟[1,2] 岳世伟 黄素玲 谢金梦 王帅[2] 宋晨飞[2] 岳赟 刘建[2] 李栋[3] PANG Xian-juan;YUE Shi-wei;HUANG Su-ling;XIE Jin-meng;WANG Shuai;SONG Chen-fei;YUE Yun;LIU Jian;LI Dong(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;National United Engineering Laboratory for Advanced Bearing Tribology,Henan University of Science and Technology,Luoyang 471023,China;School of Chemistry and Chemical Engineering,Henan University of Science and Technology,Luoyang 471023,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]河南科技大学高端轴承摩擦学技术与应用国家地方联合工程实验室,河南洛阳471023 [3]河南科技大学化学化工学院,河南洛阳471023

出　　处：《材料热处理学报》2023年第8期43-50,共8页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(92266205,52105181);河南省自然科学基金(222300420436);河南省高校国家级大学生创新创业训练计划(202210464028);河南科技大学大学生研究训练计划(2022183)。

摘　　要：聚醚醚酮(PEEK)因独特的结构使其具有良好的自润滑性、耐高温及耐水解等优异的综合性能。但PEEK作为特种工程塑料代表之一,由于成型温度高,普通塑料的成型方式和腔体磨具很难满足其要求。鉴于此,利用真空热压烧结技术在不同烧结温度下制备了纯PEEK材料。采用X射线衍射、红外和热重等表征手段对材料的结构、力学性能和热学性能进行表征,并利用多功能摩擦磨损试验机、三维轮廓仪和扫描电镜等分析了材料的摩擦磨损性能。结果表明:烧结温度没有改变PEEK材料的结构,对其热学性能影响较小;随着烧结温度的升高,PEEK材料的硬度稍有增加,热稳定性有一定程度的提高;当烧结温度为350℃时,PEEK材料的拉伸性能和摩擦磨损性能最佳,抗拉强度、弹性模量和磨损率分别为65.15 MPa、6.42 GPa和0.513×10^(-4)mm^(3)/(N·m)。Polyether ether ketone(PEEK)has excellent comprehensive properties such as good self-lubricating property,high temperature resistance and hydrolysis resistance due to its unique structure.However,as one of the representatives of special engineering plastics,due to its high molding temperature,the ordinary plastic molding methods and cavity grinding tools are difficult to meet the preparation requirements of PEEK.In view of this,pure PEEK material was prepared by vacuum hot pressing sintering technology at different sintering temperatures.The structure,mechanical properties and thermal properties of the material were characterized by means of X-ray diffraction,infrared(IR)spectra and thermogravimetry(TG)analysis,and the friction and wear properties of the material were analyzed by multifunctional friction and wear testing machine,three-dimensional profilometer and scanning electron microscopy.The results show that the sintering temperature does not change the structure of the PEEK material,and has little effect on its thermal properties.With the increase of sintering temperature,the hardness of the PEEK material slightly increases and its thermal stability improves to a certain extent.When the sintering temperature is 350℃,the PEEK material has the best tensile and friction and wear properties,with tensile strength,elastic modulus and wear rate of 65.15 MPa,6.42 GPa,and 0.513×10^(-4) mm^(3)/(N·m),respectively.

关 键 词：聚醚醚酮 烧结温度 结构 摩擦 磨损 

分 类 号：TB332[一般工业技术—材料科学与工程]