Two kinds of TiC nanoparticles, different as regards methods of preparation, were applied as a filler for polymer composites. For a comparison one sample was synthesized using sol - gel technique [1] and second was prepared by crushing microcrystalline aggregates with ball grinder. Ester elastomers based polymer nanocomposites were obtained by introducing nanoparticles into polymer during its synthesis. In order to ensure a homogenous distribution in a whole system they were dispersed in a liquid substrate (ethylene glycol, EG) using ultrasonic homogenisator (Sonoplus, Bandelin) and ultra-high speed stirrer (Ultra-Turrax T25, IKA-Werke). Poly(ether-ester) elastomers (PEE) were obtained using the periodic vacuous method proceeded in two stages : transestrification of dimethyl terephthalate with EG and polycondensation [2]. Dog-bone-shaped samples for further investigations were formed by injection moulding (Boy 15, Dr BOY). For preparation of poly(ester-urethane) elastomers (PUA) based nanocomposites the reaction injection moulding (RIM) method was applied. Samples for testing were cut out from a plate annealed at 80⁰C within 1h. Obtained composites contained from 0.1 to 1.0 wt% of nanofillers. The morphology of TiC/polymer nanocomposites was characterised using electron microscopy and the effect of TiC nanoparticles on thermal and mechanical properties of ester elastomers was investigated on the basis of DSC analysis and static tensile / abrasion resistance tests. The addition of TiC nanoparticles resulted in an increase of abrasion resistance of ca. 30%.

Reference:

1. A.Biedunkiewicz, "Crystalisation of TiC and TiN from colloidal system", Materials Science, 21(4) (2003) 445-452

2. T. Bodziony et al. "Ferromagnetic resonance study of Fe₃O₄ and Fe₃C magnetic nanoparticle mixture filling the PTMO-blok-PET polymer" Rev.Adv.Mater.Sci. 8(2004) 86-91.

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