The effective interfacial shear strength of carbon nanotube fibers in an epoxy matrix characterized by a microdroplet test

Effect of polymer infiltration on structure and properties of carbon nanotube yarns

“…Polymer infiltration, therefore, provides a simple and promising method of fabricating high-performance CNTYs without destroying the unique CNT structures or properties. Only a few polymers, including epoxy [22,23] or PVA [2,14,22,[24][25][26], are effective in improving the CNTY load transfer efficiency, although it has not previously been understood how these polymers act in the CNTY/polymer composite materials.…”

Mechanical behavior of extra-strong CNT fibers and their composites

“…Then, the CNT fiber breaks due to slipping and sliding of more and more CNTs in bundles and threads. The elastic modulus of CNT fiber is about 1-1.5 GPa, which is in the range of reported dry-spun CNT fibers (Deng et al, 2011;Zu et al, 2012). The modulus of the CNT fiber depends on the loading rate significantly.…”

“…So far, experiments have indicated that the tensile strength of CNT fibers spun from CNT forests varies from hundreds of MPa to about 4 GPa (Zhang et al, 2004(Zhang et al, , 2007aDeng et al, 2011;Zu et al, 2012;Li et al, 2006). Hence, the mechanical performance of the fibers produced so far has fallen far behind that of their constituent CNTs.…”

Catecholamine polymers as surface modifiers for enhancing interfacial strength of fiber-reinforced composites

“…IFSS between the catecholamine-coated fiber and epoxy resin was measured by the micro-droplet pull-out test [37,38]. A testing fiber was affixed to a rectangular-shaped paper frame with 10 mm width and 35 mm length.…”