1. Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan, P. R. China
2. School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan Hunan, China
3. Daqing Petrochemical Research Institute of CNPC, Daqing, P. R. China
4. Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, P. R. China