The struggle of the day such as the blink, efforts are linked step by step footprints. All the industry friends on the road, we meet again!

We will share our solutions and common problems with you.

 Principle of water-based colorful coatings

The principle of water wrapped in water can be explained by sesame dumplings we often eat. Sesame filling is the dispersed phase (also called base paint), which is wrapped by a protective film formed by glutinous rice skin, also known as protective glue. Sugar water is our continuous phase.

 Preparation process of water-based colorful coatings

Waterborne colorful paint construction process

Waterborne colorful paint construction

Spray gun is the main construction tool of colorful paint, the common model is W-77, nozzle diameter: φ2.0 mm, φ2.5 mm, φ3.5 mm, φ4.0 mm, can choose different caliber according to the size of the color point, the general sand color is recommended to use 4.0mm nozzle, our spraying pressure is generally controlled in 0.1~0.2MPa.

 

In the actual production process, there are many friends appear after thick, white and so on. Here are the answers:

 Point type control and solution

Color construction after flushing white

Why?

•The use of too many hydrophilic raw materials in the colorful formula resulted in a significant decrease in the water resistance of the paint film;

• The construction temperature is too low, or encounter heavy rainfall weather resulting in poor film formation;

Solution:

•Choose good water resistance to protect colloid, avoid the use of similar bentonite additives used in the continuous phase;

•Choose continuous phase emulsion with good water resistance and water white recovery, such as RS-3799A, RS-3799S, and ensure sufficient amount of addition; Avoid heavy rain, snow and other bad construction weather;

 Color spot protrusion is serious

Why?

•The use of too many thixotropic materials such as protective adhesive, bentonite, alkali swelling thickener and so on;

•Excessive use of high viscosity cellulose in base paint；

•Using too much powder similar to aluminum silicate;

Solution:

•Reduce the amount of protective glue in the base paint, reduce or avoid the use of bentonite raw materials, the use of alkali swelling thickener in the base paint should be appropriate;

•Reduce the addition of powder properly, or replace the powder.

 The colorful paint thickens badly 

The solution：

•Choose good stability of protective adhesive, such as S482；

•Choose the emulsion with better inert protective adhesive used as continuous phase, such as RS-3799A, RS-3799S;

•Select the thickener with low amount and high thickening efficiency, and do a good job of adding technology;

• Ensure that the concentration of protective adhesive is sufficient, especially when the production temperature is low;

I believe that after some explanation of the above, we have to understand the solution to the common problems of colorful paint. If you need detailed paint making process, please leave a message below, BATF will invite professional colorful engineers to answer for you.