1. Institute of Composite Materials, Key Laboratory of Superlight Material and Surface Technology of Ministry of Education, College of Materials Science and Chemical EngineeringHarbin Engineering University Harbin 150001 P.R. China
2. Daqing Branch of Heilongjiang Academy of Sciences Daqing 163319 P.R. China
3. Chemistry and Chemical EngineeringNortheast Petroleum University Daqing 163319 P.R. China