Abstract
One of the important tasks of modern production is the development of such finishing protective and decorative coatings that do not adversely affect the environmental situation. In this connection, the market reorientation from organically dilutable paint and varnish materials to water-based paint and varnish materials is becoming more and more obvious. Such paint and varnish materials for protective and decorative purposes include paints produced on the basis of liquid glass. On the basis of liquid glass are produced silicate facade paints with improved performance and fire protection properties, which are resistant to ultraviolet radiation and sharp temperature changes, they are more durable, environmentally friendly, they have a lower cost compared to acrylic, polyvinyl acetate, water dispersion paintwork materials. At present in scientific and technical literature there are numerous publications devoted to silicate coatings on concrete, ceramic surfaces, paving slabs, slate. However, despite the large number of patented formulations, there are no publications on the coating composition-colloidal properties relationship in the periodic literature. In the present study, the zeta potential of film formers based on potassium liquid glass and latex, potassium-sodium liquid glass and latex was determined to determine the stability of uncured solutions. The studies were carried out using a dual angle particle size analyser Zetasizer Nano ZS, Malvern. The measurements were performed in a U-shaped cuvette with gold electrodes at pH = 7.4 and temperature 25oC. As a result of experiments it was found that the most stable are uncured film formers based on potassium liquid glass and latex with the addition of sodium liquid glass. The developed recommendations will allow manufacturers of silicate paints to improve their quality with simultaneous reduction of production cost.
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