Ask the water-based paint expert -water-based glass paint appears prickly heat when baking

Problem: I use water-based acrylic and amino resin to make the glass paint when baking prickly heat. The details are as follows:

• Temperature: 80 degrees
• Time: 2 minutes
• It was already smooth when it was put into the oven
• Flash dry for 10 minutes

Has been changed to defoamer, leveling agent, solvent, no effect. I would like to ask if there is any way to eliminate the prickly heat . Thank you .

Answer

Analyze

(1) because your baking temperature is 80C, then the coating temperature is the highest but 80C, at this temperature, if you do not add a lot of catalyst in

the system, there should not be any chemical reaction to cause bubbles.

(2) the bubbles you see are probably caused by substances with low boiling points in the original recipe. Usually amino resins should not have this kind of

problem. The problem may lie in other components of your recipe .

Solution

You might as well do an experiment, starting with the acrylic resin, one by one component to add, after each addition do coating baking experiment, until

find the component foam .

For more information on water-based coatings, you can also visit SINOGRACE CHEMICAL water-based coatings knowledge base, and our water-based

paint recipes for water based metallic paints.

It is SINOGRACE CHEMICAL goal to promote the development of waterborne paint in China. I hope you found the above explanation helpful.

Sinograce Chemical co., LTD produces chemical additives for water based paint, such as defoaming agent, thickening agent, leveling agent, wetting agent