The Research of Inter-Phase Interaction in Sol-Silicate Paints

Abstract

It is proposed to use polysilicate solutions obtained by mixing liquid glass and silicic acid sol as a binder at silicate paints manufacturing. Information is provided on the mechanism for increasing the operational properties of coatings based on silicate paint sol. It has been revealed that the polysilicate solutions form films characterized by higher tensile strength due to the increase of the share of silicic anions’ high-polymer fractions in the structure of polysilicate binder in comparison with liquid glass.
 The results of studying the interphase interaction between the pigment and the film-forming agent are presented. It is shown that potassium polysilicate solutions form a smaller contact angle on the surface of the pigment (filler) and are characterized with greater work of wetting and adhesion to the filler (pigment).

Optimization of titanium dioxide wetting in alkyd paint and varnish materials in the presence of surfactants

“…However, in this work, no criteria for assessing the wettability of pigments are proposed either. In research [11], it is proved that for quantitative assessment of a change in wetting of pigment with a solution of a film-forming substance, it is expedient to use the estimated value -adhesion work. In addition, the positive side of this research is the improvement of wetting of titanium dioxide with film-forming solutions (reducing the edge wetting angle) at an increase in adhesion work.…”