Open AccessInfluence of modifying additives on properties of the powder coatings
Author(s) -
Volodymyr Gots,
Oles Lastivka,
Oksana Berdnyk,
Oleksandr Tomin
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1164/1/012044
Subject(s) - materials science , coating , surface tension , wetting , rheology , composite material , acrylate , powder coating , chemical engineering , silicon dioxide , adsorption , polymer , organic chemistry , chemistry , copolymer , physics , quantum mechanics , engineering
The study deals influence of modifying additives on properties of the powder coating. The authors Using rheological and degassing modifying additives with different nature of the main active substance. It was found that the additives based on the acrylate polymer adsorbed on the silicon dioxide in the form of Byk-3900P and on the polyoxyethylene derivative of the castor oil in the form of Luvotix R400 decreasing the surface tension in the coating film, which, in its turn, contributes to the increase in the wettability of base during the melting of the powder coating, decrease the ‘orange peel’ effect during the cross-linking, reduction in pinholes on the obtained surface and improvement of mechanical characteristics of the coating. At the same time, rheological additives based on the bentonite in the form of Luvogel 4B and on the hydrophilic silicon dioxide in the form of Cab-o-sil M5 cause the increase in the surface tension in the coating film, which, in its turn, leads to the worsening of flow, appearance and mechanical characteristics of the powder coating.