EVALUATION OF EMULSIFIER EFFECT ON THE PROPERTIES OF WATER-BASED ALKYD EMULSION

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 39-48 p.
The study is devoted to the issue of evaluating the effect of an emulsifier on the properties of the developed water-based alkyd emulsion intended for dust suppression. The goal was to establish a rational ratio of components in this system according to the following criteria: a decrease in the average droplet size, a decrease in relative viscosity, and an increase in sedimentation stability (emulsion life). The components of the basic composition of the emulsion were alkyd varnish (Resin GF-0123), surfactant (AMP-95), distilled water. To analyze the obtained compositions of the alkyd emulsion, dispersions were prepared containing: alkyd – 55-75% with a step of 5%; Surfactant – 0.1-0.5% in increments of 0.1% of the alkyd content (in-stead). The emulsion was obtained under the following technological parameters: emulsification temperature – 35°C, emulsification speed – 5000 rpm. The analyzed parameters were: dispersion (droplet size), viscosity, life (sedimentation stability) of the emulsion. It has been established that a rational composition, at which the minimum values of dispersion and viscosity are achieved, with a high lifetime at the maximum content of the polymer component, is a composition that includes: 59.7% alkyd, 40% water and 0.3% surfactant. The developed composition makes it possible to obtain an emulsion with a lifetime of more than 1 month, an av-erage dispersion value of 3 µm, and a viscosity of 40 mPa·s.
Keywords:
emulsification, water-based alkyd emulsion, varnish GF-0123, surfactants, emulsifier, viscosity, dust suppression
Strokova V.V.
Doctor of Engineering Sciences (Advanced Doctor), Professor, Belgorod State Technological University
Ishmukhametov E.M.
Postgraduate, Belgorod State Technological university named after V.G. Shukhov
Esina A.Yu.
Belgorod State Technological university named after V.G. Shukhov
Stepanenko M.A.
Postgraduate, Belgorod State Technological university named after V.G. Shukhov
Markova I.Yu.
Candidate of Engineering Sciences (Ph.D.), Belgorod State Technological university named after V.G. Shukhov
Nikulina M.V.
Postgraduate, Belgorod State Technological university named after V.G. Shukhov
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