Nanocrystallline iron-carbon fillers for polymers

Urszula Narkiewicz 2Walerian Arabczyk 2Tomasz Bodziony 1Jan Subocz 3Jerzy Majszczyk 1

1. Technical University of Szczecin, Institute of Physics (TUS), al. Piastów 48, Szczecin 70-311, Poland
2. Technical University of Szczecin, Institute of Chemical and Environment Engineering, Pulaskiego 10, Szczecin 70-322, Poland
3. Technical University of Szczecin, Institute of Electricity, Sikorskiego 37, Szczecin 70-313, Poland

Abstract

The nanocrystalline iron samples were carburised with CO:CO2 (98:2) mixture at the temperature of 450 OC. The obtained product contained 29 % of Fe3C, 35 % of Fe3O4 and 36 % of C in form of carbon fibers. This composite was used as a filler for epoxy resin.
The electric and magnetic properties of the obtained polymer composites were studied.
The obtained polymer product is semi-conductive. The conductivity increases with increasing content of the iron-carbon filler in the polymer composite. The filler has no effect on the dielectric properties of the polymer composite.
The results of the EPR studies show a superparamagnetism of the polymer composite. A dramatic change of the EPR signal intensity is observed at the temperature of 80 to 81 K. This effect is connected with the II order phase transition at the temperature between 80 and 81 K.

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Presentation: poster at E-MRS Fall Meeting 2003, Symposium F, by Urszula Narkiewicz
See On-line Journal of E-MRS Fall Meeting 2003

Submitted: 2003-03-17 15:11
Revised:   2009-06-08 12:55
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