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Legkih B.M., Fedorchenko V.I. SOME BEHAVIOUR FEATURES OF UREAFORMALDEHYDE PITCHES USED IN MANUFACTURING OF BUILDING MATERIALS The results are given of experimental researches on definition of the starting time of polymerization of carbamide - formaldehyde pitches solutions depending on various factors. It is shown, that the determining factor is the size of a hydrogen parameter рН of a pitch solution. It is shown, that at equal values of рН size, time from the beginning of a preparation of pitches solutions to the beginning of their polymerization does not depend on mark of pitches, on time of their storage, and also on a parity of a solution components at which this size is achieved.
About this article
Authors: Legkih B.M., Fedorchenko V.I.
Year: 2004
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Editor-in-chief |
Sergey Aleksandrovich
MIROSHNIKOV |
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