Shulga O. Consumer properties of water-based dispersion paints with kaolin fillers

The thesis is devoted to the formation and evaluation of properties of water-dispersion paints and coatings. The efficacy and feasibility of kaolin's modifying by surfactants according to improve properties of water-dispersion coatings was proved. The optimal ratio of dispersion styrene-acrylic water-dispersion paint's component was determined. The peculiarities of the interaction processes between pure kaolin and modified kaolin with styrene-acrylic filler were studied. The processes of interaction in systems of kaolin with modifiers and styrene-acrylic film former are analyzed. In this paper the quantitative parameters of the main characteristic bands responsible for the stretching vibrations of reactive groups of kaolin and film former are determined. Maximum shift of the characteristic bands of the IR spectra and change their intensity are indicated. It is determine which of the investigated surfactants provide the most complete interaction of kaolin with styrene-acrylic film former. The results demonstrates that the interactions of the modifiers, fillers, and film former are proceed in presence of OH-groups of adsorbed water and linkages Si-O-Al of kaolin surface. The author suggests the use of modified kaolin, which are characterized by the most complete interaction with the styrene-acrylic film former, as fillers for waterborne paints that provide higher performance properties of coatings. Technological and operational properties of water-dispersion paints were studied. The possibility of improving the water resistance and moisture resistance using modification of kaolin fillers by surfactants was determined. A comprehensive assessment of commodity quality of water-dispersion paints based on kaolin fillers was conducted and its competitiveness was determined.