Archive - Известия Казанского государственного архитектурно-строительного университета.

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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 E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it 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 Kashapov A.V. – post-graduate student Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleFormation of the structure of chemically filled Urea-formaldehyde foam
Abstract.Urea-formaldehyde foam is a cheap analog of extensively used polystyrene foam. Main competitive advantages of urea-formaldehyde foam are low cost, high fire safety, the best heat endurance, biological and chemical resistance to majority of solvents, good heat insulating and sound-proofing features, high manufacturability and simplicity of manufacture. Compactness of unit allows to use equipment both in stationary manufacture for plates production and directly on building sites for filling of urea-formaldehyde foams in hollow carcasses of different configurations. However, low mechanical strength and considerable shrinking deformations limit wide use of urea-formaldehyde foams in construction. As research results the new foam plastic was created, which is high-technology, firesafe, cheap and competitive, composite heat insulation on basis of urea-formaldehyde resin, modified by chemical fillers. Advantages of chemically filled UF foam are: - increase of physico-mathematical features (increase of compressive resistance on 60-70 % and reduction of linear shrinkage on 80-90 %), - improvement of operational characteristics (reduction of sorptive humidification on 50-60 %, increase of application temperature to 130 oC); - improvement of environmental conditions of manufacture (reduction of free formaldehyde extraction on 65-75 % and use of production wastes). - reduction in price of product (three times cheaper than polystyrene foam) at the expense of production wastes use. Investigated the structure formation of chemically filled UF foam. The increase strength of chemically filled UF foam. Associated with the ordering and greater homogeneity of its structure, as confirmed by electron micrographs. Elemental analysis showed that the structure o of chemically filled UF foam has different from non-modified elemental composition. At the point of reading in the energy-spectrum detected signals of Ca and Mg.
Keywords.Urea-formaldehyde foam, chemical content, structure.
For citations:Mubarakshina L.F., Abdrahmanova L.A., Kashapov A.V. Formation of the structure of chemically filled Urea-formaldehyde foam // Izvestiya KGASU. 2011. №4(18) P.248-253.

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