1. Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber‐PlasticsQingdao University of Science & Technology Qingdao 266042 China
2. Daetwyler Switzerland Inc. Schattdorf CH‐6467 Switzerland
3. Datwyler Sealing Technologies (Anhui) Co., Ltd. Ningguo 242300 China