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DEVELOPMENT OF A METHOD OF RECEIPT OF NANOSIZE COLLOID SYSTEMS ON A SILICON DIOXIDE BASIS S. Sedunov, M. Stupnikova, O. Demidov, K. Taraskin, A. Kozyreva, E. Filatov Applied Acoustics Research Institute; 7A, 9th May Str., Dubna City, Moscow Region; e-mail: kant1958@yandex.ru Theoretical substantiation studies and experimental research of stabilizing additives improving production characteristics of carbamide-formaldehyde pitches are conducted. The results of stability studies of carbamide-formaldehyde pitches as a part of compositions on the basis of various classes of compounds have shown that the most active as an inhibitor of thermoplastic ageing is tetramethylthiuram disulphide (thiuram D). Optimization of a developing on the basis of thiuram D composition structure has shown the water application availability to reduce essentially an effective concentration of a stabilizing agent concentration. Key words: carbamide-formaldehyde pitches, stabilizing additives, effective concentration, composition. |
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