小孔径窄分布型多孔聚酰亚胺保持架材料的制备及性能  

Preparation and Properties of Porous Polyimide Cage Materials with Small Pore Diameter and Narrow Pore Distribution

作　　者：孙小波[1,2] 李媛媛 买楠楠[1,2] 李亮 王礼强[3] SUN Xiaobo;LI Yuanyuan;MAI Nannan;LI Liang;WANG Liqiang(Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China;Henan Key Laboratory of High Performance Bearing Technology,Luoyang 471039,China;Dongfang Electric Wind Power Co.,Ltd.,Deyang 618000,China)

机构地区：[1]洛阳轴承研究所有限公司,河南洛阳471039 [2]河南省高性能轴承技术重点实验室,河南洛阳471039 [3]东方电气风电股份有限公司,四川德阳618000

出　　处：《轴承》2022年第2期44-47,共4页Bearing

基　　金：国家重点研发计划资助项目(2018YFB2000602);国家自然科学基金资助项目(U1837602)。

摘　　要：采用冷压-烧结工艺制备小孔径窄分布型多孔聚酰亚胺保持架材料,对该材料的微孔结构、拉伸强度、邵氏硬度、摩擦学性能、含油性能、跑合性能进行试验研究,结果表明:多孔聚酰亚胺保持架材料孔隙率为17.3%时,材料的孔直径为1.08μm,孔占比达到70.1%,拉伸强度为78.3 MPa,含油保持率为94.9%,均比传统材料优异;该材料加工的保持架运转稳定性好,含油保持率高,有利于实现轴承的长寿命和高可靠性。The porous polyimide cage materials with small pore diameter is made by cold press-sintering process.The microporous structure,tensile strength,Shore hardness,tribological properties,oil content properties and running-in properties of the materials are investigated.The results show that:when the porosity of porous polyimide cage materials is 17.3%,pore diameter is 1.08μm,pore proportion is 70.1%,tensile strength is 78.3 MPa,oil retention rate is 94.9%,which are superior to those of traditional materials;the cages processed by the materials have good operation stability and high oil retention rate,which is beneficial to realize the long life and high reliability of bearings.

关 键 词：滚动轴承 保持架 聚酰亚胺 冷压 微孔材料 含油率 孔隙率 

分 类 号：TH133.33[机械工程—机械制造及自动化] TQ323.7[化学工程—合成树脂塑料工业]