Experimental and Theoretical Studies of Carbon Nanotube Hierarchical Structures in Multifunctional Hybrid Composites.

摘要

Nanoscale reinforcement is locally segregated at the microscopic scale with controlled orientation. During this study, uniform growth of CNFs and CNTs was achieved on large carbon fabric. Catalyst loading, reaction time, catalyst deposition, and hydrogen dilution were found to affect the growth morphology. Carbon fiber with CNT showed slight increase in tensile properties and thermal conductivity at both fiber and composite levels. However, slight decrease in interfacial properties of CNT-grown fibers were due to non-uniform growth. Step gradient interface modification of CNT showed slight improvement in thermal conductivity. Effect of CNT wavyness seemed to affect thermal conductivity of nanocomposites.