1. Institute of Functional Textiles and Advanced Materials, College of Textiles and Clothing, Qingdao University, Qingdao 266071, China
2. Department of Machine Intelligence and Systems Engineering Faculty of Systems Engineering, Akita Prefectural University, Akita 015-0055, Japan
3. National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao University, Qingdao 266071, China