Ярославль, Ярославская область, Россия
Ярославль, Ярославская область, Россия
УДК 669 Металлургия. Металлы и сплавы
The paper provides the need and economic efficiency of recycling metallised fabrics lost their functional properties. We selected the recycling options to ensure the total recovery of the fabrics containing metallic and polyamide yarns. We proposed the electrochemical technology involving cathodic separation of recyclable metals in the form of coatings firmly adhered to the surface of the cathode as the main method of metal threads recycling. By the experiments, there is a degradation of polyamide yarns and subsequently nitration in nitric acid as a result of preliminary operations before the electrolysis. Also we proposed a method for the utilisation of the resulting nitrated polyamide degradation products, providing them as oligomers for general purpose rubber compounds. The results agree with the possibility of obtaining a brilliant silver cathode precipitate strongly adherent to the surface of the cathode made of the nitroxide electrolyte. Obtained kinetic rules of electrochemical process of cathodic deposition of recycled metals indicate the presence of significant polarization at the initial moment of time during the discharge process of silver and copper cations.
metallised fabric, electrochemical technology, copper and silver cathodic coating, nitrided polyamide degradation products, oligomers, rubber compounds, electrochemical kinetics
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