Fabrication Of CNTS/CCF Reinforced Epoxy Resin Compositess And Their Mechanical Properties Investigation

Carbon nanotube(CNTs) reinforced epoxy resin (Ep) compositess have been prepared by using multiwall carbon nanotubes (MWCNTs) as reinforcement and epoxy resin as matrix. Mechanical properties of the composites with varying CNTs content have been investigated. The characterization results suggest that tensile strength and percent elongation of the composites decrease with the increasing CNTs content, while the tensile modulus exhibits an increasing trend.Unidirectional carbon fiber and CNTs reinforced epoxy resin composites have been fabricated by using T300continuous carbon fiber (CCF) and MWCNTs as reinforcement and epoxy resin as matrix. The mechanical properties have been studied. In the present work, the volume content of the carbon fiber was restricted at60%and the CNTs weight content was limited in the range of1%to5%. Flexural strength and modulus increase firstly and then decrease when the weight content of the CNTs increases. Flexural strength and flexural modulus exhibit their maximum value of1780MPa and177GPa when the CNTs content increases to3wt%and2wt%respectively. The result suggests that the epoxy resin was reinforced by T300continuous carbon fibers.Unidirectional carbon fiber and CNTs reinforced epoxy resin composites have been fabricated by using T700continuous carbon fiber and MWCNTs as reinforcement and epoxy resin as matrix. The mechanical properties have been studied and the characterization results suggest a depressed flexural strength, modulus and interlaminar shear strength when the CNTs are incorporated into the matrix. Flexural strength and modulus increased firstly and then decreased with increasing CNTs content, while the shear strength exhibit a decreasing and increasing trend orderly. The poor adhesion at the interface of T700continuous carbon fiber and epoxy resin should probably be responsible for the decreased mechanical properties of the composites.Unidirectional carbon fiber and CNTs reinforced epoxy resin composites have been fabricated by using T800continuous carbon fiber and MWCNTs as reinforcement and epoxy resin as matrix. The mechanical properties have been investigated, and the volume content of the carbon fiber was restricted at60%and the CNTs weight content was limited in the range of1%to5%in our present work. The flexural strength and modulus of the composites decrease with the increasing CNTs content firstly, and then increase when the CNTs content increases further. However, the flexural strength of the composites is only close to but still lower than that of the composites without CNTs even when the CNTs content increased to5wt%, and the flexural modulus enhanced only a little. The poor adhesion at the interface of T800continuous carbon fiber and epoxy resin might be a major factor the results in the depressed mechanical properties of the composites.