澳洲幸运5是不是官方开奖
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Classification of bentonite?

Bentonite is divided into organic bentonite and inorganic bentonite, and inorganic bentonite is also called inorganic gel. Organic bentonite lipophilic, suitable for use in organic solvent products or polymers; inorganic bentonite is hydrophilic and suitable for use in aqueous products.

What is the use of bentonite?

Bentonite has thickening thixotropic and anti-sinking properties, so adding proper amount of bentonite to the product can significantly improve its anti-sinking property during storage and sag resistance during coating, and can also effectively improve workability.

How to add organic soil?

There are two methods for adding organic soil, one is a gel addition method; and the other is a dry powder addition method. In the case of the same product formulation and production process, the gel addition method generally has a better and more stable use effect than the dry powder addition method.

What is the amount of bentonite added in general?

The amount of organic soil added in the paint product is related to the type of the paint system and the expected target. For example, in the acid acid system, the top coat has a small amount of filler in addition to the pigment. The amount of bentonite added is generally about 0.5%, while in the anti-rust paint. The anti-rust pigment itself has a large specific gravity, and there are more fillers. The amount of bentonite added is about 0.8%. If the primer has a large amount of pigment and filler, the amount of bentonite added should be more than 1%. In addition, products such as medium-coating and heavy-duty anti-corrosion are thicker in one coat. In addition to anti-sinking, it is also necessary to consider anti-sagging during construction. Therefore, the amount of bentonite added is about 2%.

What should I pay attention to when using bentonite?

A first need to find out whether the characteristics of the product is oily or water-based, and then select the corresponding oily or water-based bentonite. If you add the wrong, it will not only play a role, but also may cause serious quality problems in your product.
B If the dry powder is directly added, it is suitable to be added in the mixing process, and the order of addition is resin, solvent, organic soil, pigment and filler. When adding, the faster the better, without affecting the safety, the better, so as to prevent the organic soil from being wetted by the resin solvent to form plasticine-like small particles. It is forbidden to add organic soil without stirring.
C inorganic soil should be first made into a gel with water, and then added to the water-based product, because the inorganic soil requires a long time of high-speed stirring to fully open, and the emulsion is also afraid of these requirements, so it should not be added directly.

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