Is there a real stone paint with a black gold sand color?

Black gold sand is generally a stone, so there will be a big difference on the surface. Real stone paint is available in a variety of colors. But there will be no combination of black gold sand.

Domestic 120 yuan square.

Imported 280 yuan square.

Black gold sand is a kind of precious imported granite with black main body and "gold dots", which is solemn and clear in the black light under the sunlight, flashing with ** brilliance, like a little starlight in the night sky. The structure is dense, the texture is hard, the acid and alkali resistance is good, and the weather resistance is good, and it can be used outdoors for a long time. The characteristics and advantages of granite also include high load-bearing capacity, compressive capacity and very good grinding ductility.

The English name of black golden sand is black galaxy, which belongs to a kind of granite, divided into large golden sand and small golden sand. Black Sands, the origin is India. There are large, medium and small sand, there are thick and thin points, our door stone commonly used stone is black sand, thickness <, about between, the door stone is very particular about integrity, that is to say, the door stone is best a stone, our door is generally about 90cm, tile when the door stone often has joints, so marble is more suitable to be selected as a door stone.

1 Coating hardness The coating of real stone paint is very hard after drying, and the nails cannot be picked. If the general real stone paint can still be picked with a fingernail after three days of application in good weather conditions, it should be regarded as too soft coating. The main reason is that the lotion chosen is not appropriate.

When preparing real stone paint, they take the same emulsion as preparing latex paint, which leads to a low emulsion content in the real stone paint formula, and the coating is not tight enough due to the presence of a large amount of sand and gravel during film formation. According to the research of coating research and development personnel, the adhesive strength of the emulsion used for the preparation of real stone paint should not be less than 3MPa, and the minimum film-forming temperature should not be less than 15.

The higher minimum film-forming temperature may cause the disadvantage that it is not easy to form the film at low temperatures, which can be solved by adding more film-forming additives appropriately. Film-forming additives can be completely volatile after the coating is dried, and generally does not affect the performance of the coating film. The real stone paint chooses a composite emulsion with high adhesion and a high minimum film-forming temperature, which fundamentally solves the problem of too soft coating.

2. The coating has good water resistance, stable coloring, no whitish, no color difference.

Some real stone paint coatings will turn white after every rain, and the coating will become loose, and after the rain stops, the coating will return to its original color after the sun is exposed. In fact, this is due to the poor water resistance of the coating, caused by the absorption of water, the formula is that the selection of acrylic emulsion in the synthesis of surfactants need to be added, some manufacturers in order to increase the stability of the emulsion, the surfactant used is greatly exceeded; Some manufacturers add carboxymethyl cellulose, hydroxyethyl cellulose and other substances as thickeners and sodium benzoate as preservatives when preparing real stone paint. These substances are water-soluble or hydrophilic, and the water resistance of the coating is greatly reduced if the coating remains in the coating after film formation.

The experiment shows that the water absorption rate of the coating formed by mixing pure acrylic emulsion with quartz sand without adding any additives is as follows: On the basis of the above-mentioned coatings, hydroxyethyl cellulose is added, and the water absorption rate rises to. Because the coating of real stone paint is thicker, once the water is absorbed, it is not easy to release it in a short time, so it causes the appearance to be whitish and the result of loose inside the coating.

The coating of real stone paint is very hard after drying, and the nails cannot be picked.