
Preparation and Tribological Properties of PTFE/PEEK Porous Bearing Cage Materials Based on FDM
WANG Wen-wen, LIU Jie, ZHAO Xun-cha, TANG Chao, LIU Peng
Preparation and Tribological Properties of PTFE/PEEK Porous Bearing Cage Materials Based on FDM
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.
Bearing cage / FDM / PEEK / PTFE / Tribological properties
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