基于FDM的PTFE/PEEK多孔轴承保持架材料制备与摩擦学性能研究  

Preparation and Tribological Properties of PTFE/PEEK Porous Bearing Cage Materials Based on FDM

作　　者：王文文[1] 刘洁[1] 赵训茶[1] 汤超 刘鹏 WANG Wen-wen;LIU Jie;ZHAO Xun-cha;TANG Chao;LIU Peng(Shandong Labor Vocational and Technical College,Ji'nan 250022,China;College of Information Science and Engineering,Shanxi Agricultural University,Jinzhong 030800,China;Shandong Academy of Agricultural Sciences,Ji'nan 250100,China)

机构地区：[1]山东劳动职业技术学院,山东济南250022 [2]山西农业大学信息科学与工程学院,山西晋中030800 [3]山东省农业科学院,山东济南250100

出　　处：《塑料科技》2024年第6期16-21,共6页Plastics Science and Technology

基　　金：国家自然科学基金(31801632)。

摘　　要：采用熔融沉积成型(FDM)工艺制备了聚四氟乙烯/聚醚醚酮(PTFE/PEEK)二元复合多孔材料,并围绕材料的微观结构与宏观摩擦学性能及二者之间的映射机制展开研究。结果表明:基于FDM工艺制备的PTFE/PEEK多孔材料成孔效果良好且随着NaCl质量分数提高,多孔试样的孔隙更为密集。PTFE/PEEK多孔材料的含油率与孔隙率变化成正比,NaCl质量分数为53%时,材料的油保持率最高,所有试样的油保持率均高于90%。干摩擦条件下,PTFE的加入在一定程度上改善了材料的摩擦学性能;贫油润滑状态下,NaCl含量为63%的6#试样摩擦系数最低,多孔结构的供油、含油能力与PTFE的润滑性相结合,可赋予复合材料优异的摩擦学性能。本研究为PEEK基多孔轴承保持架材料的成型与应用提供了参考。Polytetrafluoroethylene/polyetheretherketone(PTFE/PEEK)binary composite porous materials were prepared by fused deposition molding(FDM)process,and the mapping mechanism between microstructure and macroscopic tribological properties of the materials was researched.The results showed that the PTFE/PEEK porous materials prepared based on FDM process had a positive pore-forming effect and the pores of the porous samples were more dense with the increase of NaCl mass fraction,and the oil content of PTFE/PEEK porous materials was directly proportional to the change of the porosity,and the oil retention rate of the materials was the highest when the mass fraction of NaCl was 53%,and the oil retention rate of all the samples was higher than 90%.Under dry friction conditions,the addition of PTFE improved the tribological properties of the materials to a certain extent.Under the oil-poor lubrication condition,the friction coefficient was lowest for the 6#sample with a NaCl content of 63%,and the combination of the oil supply and oil-containing capacity of the porous structure and the lubricating property of PTFE could give the composites good tribological properties.This study provides a reference for the molding and application of PEEK-based porous bearing cage materials.

关 键 词：轴承保持架 熔融沉积成型 聚醚醚酮 聚四氟乙烯 摩擦学性能 

分 类 号：TG669[金属学及工艺—金属切削加工及机床] TH145[一般工业技术—材料科学与工程]