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Super-stretchable helical structures made from carbon nanotube (CNT) fibers are promising candidates for applications in stretchable and wearable devices. A multi-scale model of the helical structures of CNT/polymer composite fibers is presented to gain more insight into their deformation properties and damage mechanisms. By imitating the practical preparation process, a suitable model for the helical...
Polymer infiltration is an efficient way to strengthen carbon nanotube fibers in the process of spinning. Given the carbon nanotube/polymer composite fibers obtained from this approach possess higher mechanical properties than the ones of their components, the general rule of mixtures for a composite material is not applicable. Accordingly, a novel coarse-grained molecular dynamics model is proposed...
Monotonic and cyclic tensile loading experiments were conducted for analyzing elastoplastic deformation and failure of carbon nanotube (CNT) fibers. The deformation stages of the CNT fibers under tensile loads consist of a short elastic stage and a long-lasting plastic stage, while the elastic stage of the CNT fibers can be generally divided into two parts: a perfect-elastic stage and an elastic-like...
A simple method was proposed to prepare a high surface area and hierarchical porous carbon for supercapacitors by one step carbonization-activation of poly (vinylidene chloride) with NaOH. The porous carbon has hierarchical micropores, mesopores and macropores with a high surface area of 2815m 2 g −1 . Its capacitance reaches 376 and 215Fg −1 at current densities of 0.05 and...
Monolithic porous carbon (MPC) was synthesized by a templating method using Na 2 CO 3 as template, novolac-type phenolic resin as carbon precursor and hexamethylenetetramine as hardening agent. The template, carbon precursor and hardening agent were mechanically mixed in a grinding machine, hardened at 150°C, crushed into fine particles, compacted into a disc, carbonized at 800°C and...
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