Bentonite for water based systems

In the water-based system of paint coatings, we have to buy special water-based bentonite, because many Bentonite is an oily system, the pH value is also a very critical indicator.

Only with these three aspects, can be bentonite clay, in water-based paint coatings to play a normal thixotropic and rheological properties. Many people mistakenly get the oil-based system of bentonite to the water-based system, the result is the phenomenon of agglomeration and delamination.

And what we traditionally call pH, not controlled properly can cause viscosity to disappear. If you violent construction, high-speed shear time is too long will be thixotropic destroyed, spraying when the hanging will be affected, and the gun will be easy to clog.

Take 5 grams of water-based bentonite clay, 95 grams of water mixing and leave it for two hours, the qualified product should form a gel-like delamination height of less than one centimeter.

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Very important point, we must not be organic bentonite clay and some cellulose directly combined, must be in the interval of more than 30 minutes before adding will be better, add some improvised activator will promote its dispersion.