Quantitative model for silicon-acrylate mixtures

Abstract

: Protection of surface layers of building materials are very important in construction industry. Plasters, which are used as a cover layer of load bearing structure, must resist to the adverse natural conditions, corrosion or mechanical damage. As the surface treatment there are used coatings which must require material and physical characteristics and help to resist to the material degradation. This article is focused on silicon-acrylate coatings. Silicons (polysiloxanes) are very resistant and expensive. Acrylates are cheaper and less resistant than polsiloxanes. The coating samples were measured in the ATR module in the infrared spectrometer. The advantage of this method is that the sample doesn´t need to be modified and the measurement is quite cheap. As a result, the mathematical model for quantitative analysis was created – the quadratic dependence of carbonyl peak area on the concentration of acrylate. Indirectly, the polysiloxane concentration can be calculated. In the reality the calculation of polysiloxane concentration can be the problem because of additives. The conditions of the measurement were specified and the statistical deviation was determined to be 4.6 %.