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Water-based acrylic paint back-stick is a common problem encountered by water-based paint formulaters. In order to solve the problem of water-based acrylic paint back-sticking, we must fundamentally understand the causes of water-based acrylic paint back-sticking. Water-based acrylic paint sticks back to china due to the increased fluidity of linear thermoplastic polymers above the
transition
. The solution to water-based acrylic paint back stick can be considered from several angles.
1, add high Tg acrylic resin, and use faster volatile film-forming additives;
2, try to use self-inline acrylic resin;
3, try to choose less granular acrylic emulsion;
4, add PUD. PUD has a certain thermostastericity,
thermoplastic; Wax emulsions can form wax film on the coating surface to reduce surface viscosity,
6, if the resin system contains nirvanium base, can be added a little zinc and other metal salts or oxides, play the role of ion-type crosslinking;
7, add smaller particle size fillers;