Yaroslavl State Technical University (Kafedra «Tehnologiya stroitel'nogo proizvodstva»., Professor)
Yaroslavl, Yaroslavl, Russian Federation
UDK 547.24 Одноатомные производные насыщенных углеводородов, содержащие другие металлоиды (кроме кислорода, серы и их аналогов), непосредственно связанных с углеродом
The paper considers the possibility of obtaining a high-quality binder based on sodium liquid glass suitable for construction works. According to the author, by varying the dilution of sodium silicate solution and carbamide concentration at a fixed elevated temperature (353 K) we can obtain a modified product with a certain molecular weight and a given particle size in the solution. Based on the data of thermomechanical analysis and testing the properties of 200-270 µm thick films obtained by curing the system "sodium liquid glass with a density of 1.36-1.41 g∙cm-3 – carbamide", we have identified the conditions for providing the necessary hardness and tensile strength of the material. The author recommends the resulting modified material for using in silicate compositions for the protection and decorative finishing of mineral surfaces of building structures.
sodium liquid glass, carbamide, modified binder, particle size, molecular weight, hardness, tensile strength of films
1. Razgovorov, P.B. (2013) Modification of water soluble silicates by introduction of organic compounds, Izvestiya vuzov. Khimiya i khim. tekhnologiya, 56(11), pp. 4-11 (in Russian).
2. Eremina, N.V., Avvakumov, E.G. & Zelinsky, V.Yu. (2005) Properties of flame retardant composition based on liquid glass and mechanically activated aluminium oxide, Zhurnal prikladnoy khimii, 78(7), pp 1065-1069 (in Russian).
3. Razgovorov, P.B. (2008) Scientific bases of creation of composite materials from technical and natural silicates. PhD. Ivanovskiy gosudarstvenniy khimiko-tekhnologicheskiy universitet (in Russian).
4. Razgovorov, P. B., Ignatov, V. A., Koifman Z.C. & Terskaya I.N. (1993) Investigation of the mechanism of liquid glass modification by carbamide, Izvestiya vuzov. Khimiya i khim. tekhnologiya, 36(1), pp. 68-70 (in Russian).
5. Bogoyavlenskaya, G.A. & Denisova M.V. (1996) Silicate adhesives based on modified liquid glass, Zhurnal prikladnoy khimii, 69(12), pp. 2075 (in Russian).
6. Larin, A.N. (1986) Dispersive analysis of polyelectrolyte solutions by turbo-dimetric method: laboratory operations manual. Ivanovo: Izd-vo Ivanovskogo gosudarstvennogo khimiko-tekhnologicheskogo universiteta (in Russian).
7. Aleskovsky, V.B. (ed.) (1964) Physico-chemical methods of analysis. M.: Khimiya (in Russian).
8. Tager, A.A. (1963) Physico-chemistry of polymers. M.: Goskhimizdat (in Russian).
9. Iler, R. (1979) The chemistry of silica: Solubility, polymerization, colloid and surface properties, and biochemistry. N.Y., Chichester: Wiley-lnterscience Publ.
10. Friedemann, W. & Lauf, B. (1981) Adhesive and/or paint compositions based on alkali metal silicate solutions. 3020864 FRG.
11. Kargin, V.A. (1979) Structure and mechanical properties of polymers: Selected papers. M.: Nauka (in Russian).
12. Kargin, V.A. & Slonimsky, V.L. (1967) Short essays on physical chemistry of polymers. M.: Khimiya (in Russian).
13. Sokolov, L.B. (1979) Fundamentals of polymer synthesis by polycondensation. M.: Mir (in Russian).
