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Tadeusz Habdank-Wojewodzki: Graphene Zn/Cu oxide micronanocomposites manufactured by the ball milling with electrochemical and electrotribological properties modelled

posted 5 Jul 2016, 02:20 by info admin
Tadeusz Habdank-Wojewodzki, Josef Habdank, Mikkel Aaggard, Przemyslaw Cwik, Morten Stendahl Jellesen
AGH University of Science and Technology, Department of Electronics, Krakow, PL30059, Poland;
Graphenalloy, Charlottenlund, DK2920, Denmark;
Department of Electrical Engineering, Technical University of Denmark, Kongens Lyngby, DK2800, Denmark;
Delphi Automotive Systems, Krakow, PL30962, Poland;
Department of Mechanical Engineering, Technical University of Denmark, Kongens Lyngby, DK2800, Denmark

Graphene applied in micronanocomposites have promising electrical and tribological properties, especially in context of sensory applications for electrotribological friction nodes. Due to Graphene's high durability, strength and low friction coefficient affecting the properties of the composite, the applications range from heavy industry (strain sensing paints, windmill blades etc.) to robotics and microsystems (self sensing bearings and shafts). Researched micronanocomposite is manufactured from multilayer graphene precursor with addition of zink oxide and/or copper (II) oxide fillers in thermosetting 4,4'-Bis(maleimido)diphenylmethane and 2,2'-diallylbisphenol or Novolac matrix. Mixed substrate powder exhibits a bimodal particle size distribution as documented using Laser Diffraction method and supported with SEM images. High energy ball co-milling of the powders is decreasing the number of layers in multilayer graphene precursor through the process of intercalation of metal oxide particles between graphene layers. After co-milling, metal oxide median is at the size of 800 nm, and multilayer graphene precursor nanoplatelets radius 4 um. Chronopotentiometry and impedance spectroscopy has been performed after the powder suspended in the aqueous solution ZnCl2 was further intercalated and the results were mathematically modelled. Several conductance models were fit for graphene copper oxide sample with machine learning models such as Hammerstein-Wiener model.

[1] "Characterizations and electrical modelling of a synthesized Vanadium (V) Oxide and Copper Oxide Graphene Quantum Tunneling Composites (GQTC) applied in electrotribology", T. Habdank-Wojewódzki, J. Habdank, P. Cwik, S. Zimowski, Sensors; ISSN 1424-8220, 2016 vol. 16 iss. 1 art. no. 58, p. 1–12

[2] ] "Method of production of a self-sensing elements for microelectromechanical systems based on Graphene nanocomposites" J. Habdank, T. Habdank-Wojewodzki, patent application DK 201100898 A1, published 2013

[3] "The anodic behaviour of copper in solutions of salt with ethanol solvent", B. Stypula, J. Banas, M. Starowicz, H. Krawiec, T. Habdank-Wojewódzki, IP Surface Engineering; ISSN 1426-1723, 2005 p. 173–181.

Tadeusz Habdank-Wojewódzki Ph.D., nanotechnology and nanomaterials specialist, inventor, B.Eng. and M.Sc. in metrology, completed postgraduate studies of Technical Physics at AGH UST, received his PhD in materials science. Since 1980 research specialist at AGH-UST, Krakow, Poland, specializing in graphite sensory materials doing research in tribology, nanomaterials, micronanotechnology, Graphene Quantum Tunneling Composites for applications in sensors. Has broad experience in practical applications, authored more than 90 publications and over a dozen patents.

Josef A. Habdank, research, development and implementation specialist, B.Eng in engineering (Copenhagen University College of Engineering, Denmark) and M.Sc. in mathematics (Danish Technical University, Copenhagen, Denmark). 

Mikkel Aagaard, B.Eng in Electronics and Computer Science (Copenhagen University College of Engineering, Denmark)  currently Master’s degree at the Technical University of Denmark with a main focus on graphene composites for electrotribological applications. 

Przemyslaw Cwik, materials researcher and experiment specialist, B.Eng and M.Sc. in electronics and telecommunication (University of Science and Technology, Krakow, Poland). System engineer at Delphi Automotive Systems, Poland. 

Morten Stendahl Jellesen, Senior Researcher at the Department of Mechanical Engineering, Materials and Surface Engineering.