Water-based paint knowledge base-How to solve the water - based acrylic paint back adhesion problem?

2019-04-11

How to solve the water - based acrylic paint back adhesion problem? - ask a water-based paint expert

Problem:

How to solve the water - based acrylic paint back adhesion problem?

Water - based acrylic paint back adhesion is a problem often encountered by water - based paint formulators.In order to solve the problem of water - based acrylic

paint adhesion, we must fundamentally understand the reason of water - based acrylic paint adhesion .The readhesion of waterborne acrylic paint is due to the

increase of rheological properties of linear thermo plasticpolymer at higher transition temperature than glass.The solution of water - based acrylic paint back adhesion

can be considered from several perspectives.

1.High Tg acrylic resin was added and fast volatile film forming agent was used

2. Use self-crosslinking acrylic resin as far as possible

3.Choose acrylic emulsion with smaller particle size as far as possible

4.Add PUD. PUD has a certain thermosetting property and can reduce thermoplasticity

5.Add the wax emulsion. Wax emulsion can form wax film on the coating surface and reduce the surface viscosity

6.If the resin system contains carboxyl group, a little metal salt such as zinc or oxide can be added to play the role of ion crosslinking

7.Add filler with smaller particle size

For more information about waterborne coatings, you can also visit the Sinograce Chemical industry news waterborne coatings repository, and the recipes in our waterborne

coatings repository.Or ask questions directly to us through our water-based paint expert column.

To promote waterborne paint in China is the goal of Sinograce Chemical. I hope you found the above explanation helpful.


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