Exploration of the Adsorption Reduction of the Pigment Aggregates Strength under the Effect of Surfactants in Water-Dispersion Paints

Abstract

This article presents the results of studying the disaggregation of titanium dioxide in water-dispersion compositions based on an acrylic film-forming agent under the action of a surfactant. The possibility of using polyether siloxane copolymer (PC) and sodium polyacrylate (NaPA) in paint and varnish compositions as modifying additives of the dispersing effect is proved. The correlation between the dispersing effect of surfactants and the amount of their adsorption on the pigment is proved. NaPA, which provides a greater reduction in adsorption strength, demonstrates a greater dispersing effect than PC. It was found that the larger the size of the aggregates of pigment particles, the greater the disjoining pressure created by the surfactant. An equation is derived that generalizes the cumulative contribution of surfactant concentration and the content of the film-forming agent in suspensions to the average particle diameter of pigment. The introduction of NaPA in the amount of 0.25 g/dm3 into the paint allows the rate of acid corrosion to be reduced by 2 times, the number of pores in the coating to be decreased, and the adhesion of the coating to be significantly increased (by 2 points according to ISO 11845: 2020).

Development of an Ultrasonic Method for the Quality Control of Polyethylene Tanks Manufactured Using Rotational Molding Technology

“…After measuring the values of the amplitude coefficient of the third harmonic corresponding to a certain combination of input parameters ( Table 2 ), the experimental array was sampled on dot plots in accordance with the PDP method [ 75 , 76 , 77 , 78 , 79 , 80 , 81 ], and the particular dependencies were obtained, which are shown in Figure 12 , Figure 13 and Figure 14 .…”

“…of the ultrasonic signal was carried out using the method of probabilistic–deterministic planning (PDP). A detailed description of the PDP method for modeling multiparameter processes is presented in [ 75 , 76 , 77 , 78 , 79 , 80 , 81 ]. The experiment was designed with a “3 × 3 × 4” plan and included all the possible combinations of input parameters.…”

Synthesis and testing of latex properties of copolymers of ethyl or butyl acrylate with methyl or butyl methacrylate and methacrylic acid

“…We found that there is a complete lack of research data on the use of polymer dispersions in paint formulations for electrophoretic painting. The most frequently published are issues related to the pigmentation of dispersion systems, their stability, surfactants, nanodispersion and dispersions containing surfactants that are more environmentally friendly 32–36 …”

“…The most frequently published are issues related to the pigmentation of dispersion systems, their stability, surfactants, nanodispersion and dispersions containing surfactants that are more environmentally friendly. [32][33][34][35][36]…”

A crosslinked silicone coating adjusted by an additive with promising antifouling and ice nucleation inhibition performance

“…To enhance coating properties, researchers are focusing on the development of new functional additives. 30,31 In coating preparation, many additives are commonly used to regulate process performance, such as suspension agents, 32,33 film-forming agents, 34,35 tougheners, 36,37 thickeners, 38,39 pigment dispersants, 40,41 and defoamers, 42 which are an essential part of coatings. For example, Liang et al 42 added a defoamer and a film-forming additive to address the coating's internal defects and improve its mechanical properties.…”