The Addition of Polyethylene-Polyamine Surface Treated Carbon Nanotube on the Interfacial Adhesion of Carbon Fiber-Reinforced Polyimide Composite

Abstract

Carbon fiber reinforced polyimide (CF/PI) composites have been filled with polyethylene-polyamine-treated carbon nanotube to enhance the adhesion. According to the modification, the interlaminar shear strength (ILSS) of composites has been greatly improved. Dynamic wetting method, XPS and SEM are used to examine the microscopic properties of resultant composites. The enhanced ILSS is attributed to the CNT interlock, which improves the wetting between carbon fibers and resins.

Keywords:

• Carbon
• CNT
• ILSS

ACKNOWLEDGMENTS

The authors would like to thank help from “Chen Guang” project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (project no. 09CG65) and the support by Leading Academic Discipline Project of Shanghai Municipal Education Commission, Project Number: J51802. Shanghai Municipal Natural Science Foundation: 11ZR1413600.