1. National Engineering Technology Research Center of Flame Retardant Materials, School of Materials, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
2. Engineering Laboratory of Non-halogen Flame Retardants for Polymers, Beijing Technology and Business University, Beijing 100048, China
3. Shanghai Spaceflight Precision Machinery Institute, Shanghai 201600, China