Eco‐friendly, acrylic resin‐modified potassium silicate as water‐based vehicle for anticorrosive zinc‐rich primers

Abstract

Potassium silicate binder of zinc-rich coating was modified by adding water-based acrylic resin. Several series of coatings containing 5, 10, and 15 wt % of acrylic and acrylic/styrene binders were added to potassium silicate. The coatings were applied on steel and the corrosion resistance of coatings was evaluated by conventional methods such as electrochemical impedance spectroscopy, corrosion potential, salt spray, and scanning electron microscopy. The results indicated that the modification of silicate binder with acrylic and acrylic/styrene led to shortening the curing time, improved corrosion protection, better dispersion of zinc particles, and enhanced salt spray resistance of resultant coatings.

Comparative study of two equivalent circuit models for electrochemical impedance spectroscopy analysis of epoxy zinc-rich coatings

“…In impedance spectroscopy studies of ZRCs, dispersion coefficients are usually not given. The few papers [30][31][32] that give dispersion coefficients also basically do not analyse them. There are two reasons for this: the factors affecting the dispersion coefficient are not clear, and the dispersion coefficient is poorly regularised.…”

Analysis of Appearance Quality of Silicate Coatings by Atomic Force Microscopy Method

“…для повышения стойкости силикатных покрытий предложено использовать в качестве пленкообразующего полисиликатные растворы, полученные смешиванием жидкого стекла с золем кремниевой кислоты [1][2][3][4][5][6][7]. Полисиликатные растворы содержат в своем составе, наряду с частицами золя, мономер, олигомеры и полимерные разновидности кремнезема [8,9].…”

“…Установлено, что шероховатость поверхности покрытий на основе калиевого жидкого стекла составляет R a = 16,208 мкм, а на основе калиевого полисиликатного раствора -10,880 мкм (рис. [3][4][5][6]. для покрытий на основе натриевого жидкого стекла значение шероховатости составляет R a = 11,280 мкм, а на основе натриевого полисиликатного раствора -9,125 мкм базе 30 мкм (рис.…”

Preparation of polyvinylpyrrolidone/graphene oxide/epoxy resin composite coatings and the study on their anticorrosion performance

“…A lot of small holes and gaps can be formed during the curing process. 7 The corrosive medium easily penetrates the anticorrosive coating and corrodes the metal matrix. 8 Therefore, water-based epoxy coatings have the disadvantages of flash rust, poor adhesion, and poor water resistance.…”

“…Meanwhile, water can also evaporate from the water‐based coating. A lot of small holes and gaps can be formed during the curing process 7 . The corrosive medium easily penetrates the anticorrosive coating and corrodes the metal matrix 8 .…”