1. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, Shaanxi, P. R. China
2. The Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, Shaanxi, P. R. China
3. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an 710064, Shaanxi, P. R. China
4. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, P. R. China