1. Research School of Polymeric Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, P. R. China
2. State Key Laboratory of Tribology Tsinghua University, Beijing 100000, P. R. China
3. National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang 471023, P. R. China
4. Institute of Advanced Manufacturing and Modern Equipment Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, P. R. China
5. School of Textile Science and Engineering, Tiangong University, Tianjin 300387, P. R. China