CREATION AND RESEARCH OF EPOXY NANOCOMPOSITES WITH CARBON NANOTUBES OBTAINED BY THE FLOAT-CATALYSIS METHOD
Abstract
Epoxy nanocomposites with CNT “felt” obtained by float catalysis as filler were prepared. Such parameters as curing process and glass transition of epoxy nanocomposites and initial epoxy composition, structure and morphology of CNT “felt”, initial epoxy composition and epoxy nanocomposites, specific capacity of epoxy nanocomposites were investigated. The influence of CNT “felt” on curing process in epoxy nanocomposites with different amounts of curing agent was determined. It was found that the presence of CNT “felt” leads to decrease in curing reaction rate for nanocomposites with a stoichiometric composition of the epoxy and curing agent. At the same time, CNT “felt” accelerates the curing reaction with an excess of curing agent. An exothermic reaction between the curing agent and the surface of CNTs was established. It was found that the structure of epoxy nanocomposites has a high degree of heterogeneity: the presence of fiber-like structures and individualized CNTs is observed together with the regions that are typical for CNTs that are fabricated via a catalytic chemical vapor deposition (CVD). Based on the studies performed, it is possible to predict that the uncured compositions already obtained in this work can be used for the manufacture of electrically conductive carbon fiber reinforced plastics and functional coatings.
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