1. School of Chemistry & Chemical Engineering, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, Anhui, P. R. China
2. Key Laboratory of High-Performance Rubber and Products of Anhui Province, Anhui Zhongding Sealing Parts Co., Ltd., Ningguo 242300, Anhui, P. R. China
3. Longteng Security & Surveillance Technology Co., Ltd., Lu’an 237001, Anhui, P. R. China