About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Mubarakshina L.F. – candidate of technical sciences, assistant Е-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kashapov A.V. – post-graduate student Abdrahmanova L.A. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 |
| Title of the article | Foaming role in obtaining urea-formaldehyde foam |
| Abstract. | Properties of ready urea-formaldehyde foam essentially depend on a number of colloidal and chemical aspects of the foaming which regulation is carried out by means of small additives of foaming agents entered into initial composition. Formation and preservation of homogeneous cellular structure in firm urea-formaldehyde foam depends on properties of initial foam (frequency rate, stability, disperse structure) and decides mainly by speeds of internal destruction of foam, on the one hand, and speeds of polymerization and increase of durability of urea-formaldehyde foam on another. In this work the foam ability of ABSK, as most effective foaming agent is studied by production of urea-formaldehyde foam. Dependences of the main properties of urea-formaldehyde foam (dispersion, stability, frequency rate of foaming) from concentration of ABSK and foaming conditions are investigated. Influence of concentration of ABSK and technology of preparation of foam on formation of cellular structure of urea-formaldehyde foam is revealed. It is established that for receiving homogeneous close-meshed urea-formaldehyde foam the maximum concentration of the ABSK water solution no more than 1,5 mass. % from concentration of urea-formaldehyde pitch. The maximum frequency rate of foaming is thus reached. Being formed foam is characterized by small dispersion and high stability that allow to receive highly effective urea-formaldehyde foam with close-meshed homogeneous structure. |
| Keywords. | Urea-formaldehyde foam, foaming, cellular structure. |
| For citations: | Mubarakshina L.F., Kashapov A.V., Abdrahmanova L.A. Foaming role in obtaining urea-formaldehyde foam // Izvestiya KGASU. 2012. №2(20) P.189-193. |
