Mohamad Ali Sanjari Shahrezaei - Polymer Engineering Department, Amir kabir University of technology /Tehran,Iran.
Ali Vahedi - Aircraft Engineering Department, Amir kabir University of technology /Tehran,Iran.
Behrang Hamidi - Aircraft Engineering Department, Amir kabir University of technology /Tehran,Iran.

Due to the unique physical properties of carbon nanotubes, including mechanical, thermal, and electrical properties, CNTs are used as the most promising reinforcement materials for usein high performance composites. However, good tube dispersion and high nanotube loading and strong interfacialbonding are essential for fabricating high performance CNT buckypaper nanocomposites. The filtering time and properties of final buckypaper are important parameters in buckypaperproduction. By enhancement of CNT concentration, volume of suspension for filtration and filtering time are reduced. Acid treatment leads to remove of surfactant and excellent buckypaper