Influence of Physical Fields on Functional Properties of Polymeric Nanocomposites

The conditions for the formation of epoxy composite coatings filled with nanodispersed particles of fullerene black are investigated. The efficiency of the use of electromagnetic and ultrasonic radiation for modifying the composition based on the epoxy matrix has been confirmed. The paper describes the optimum composition and mode of formation of epoxy composite materials filled with fullerene black.

Fullerene Black: Relationship between Catalytic Activity in n-alkanes Dehydrocyclization and Reactivity in Oxidation, Bromination and Hydrogenolysis

<p>The reactivity of fullerene black in oxidation (by air oxygen or ions MnO₄^– or Cr₂O₇^2– in solution), bromination (by Br₂ or (C₄H₉)₄NBr₃) and hydrogenolysis (without hydrogenation catalyst) are studied. The dehydrocyclization of <em>n</em>-alkanes over fullerene black is realized via the monofunctional mechanism, <em>i.e. </em>the dehydrogenation and cyclization stages proceed on the same catalytic center. The addition of alumina to the catalyst transforms dehydrocyclization mechanism to bifunctional one, when fullerene black acts as dehydrogenation agent. Reactivity studies and ESR spectroscopy data for initial and annealed fullerene black show the presence in fullerene black structure of both non-conjugated multiple and dangling bonds. Nonconjugated bonds determine catalytic activity and reactivity of fullerene black. They are localized in amorphous part of fullerene black. Technological aspects of fullerene black as alkanes dehydrocyclization catalyst are discussed.</p>

The Study of the Role of Fullerene Black Additive during the Modification of Ductile Cast Iron

The use of fullerene black (FB) as effective modifying additive to cast iron is substantiated by its high potential. Research of nanoadditives to modifier has shown an increase in graphitization degree and the forming of favorable morphology of globular graphite. The results of microstructural analysis and tribological trials have confirmed an improvement of ductile cast iron’s structure and properties when treated with FB-additive.