1. College of Environment and Safety Engineering, Qingdao University of Science and Technology Qingdao 266042 People's Republic of China
2. Shandong Engineering Research Center for Marine Environment Corrosion and Safety ProtectionQingdao University of Science and Technology Qingdao 266042 People's Republic of China
3. Shandong Engineering Technology Research Center for Advanced CoatingQingdao University of Science and Technology Qingdao 266042 People's Republic of China
4. Key Laboratory of Gas and Fire Control for Coal Mines (China University of Mining and Technology)Ministry of Education Xuzhou 221116 China