How to solve the black stone will fade?

Nowadays, black stone is rarely used in large areas, and is generally used for edge decoration and countertops. People often find that the black stone will fade after being used for a period of time, that is, the original color becomes lighter, not as bright as the original board. The reason is: the color of natural stone is formed naturally, and the color quality is determined by the pigment ion contained in the stone and the internal structure. At the same time, the different order of formation of different minerals that make up the stone will also affect the color change, which is the so-called color difference. Therefore, in order to make the color of the stone basically the same, the stone processing factory adopts the coloring process (that is, the use of dyes) for processing, so as to solve the problem of color difference of the stone, and the purpose is to make the stone have a better appearance.

After the dyed black stone is pavement, due to natural weathering, friction, pollution and other factors, the fading of the black stone is particularly prominent, which seriously affects the decorative effect of the stone.

People generally adopt the following two methods to solve this problem:

First, use the "melanin" dye, that is, the coloring process. However, because the coloring process of the stone processing plant is to use the original board soaking method, and the paving stone can only use the method of painting the surface of the "staining agent", so the fixing effect is obviously different. The latter usually only Maintain for about three months.

Second: Use "touch-up protective agent", that is, apply protective agent on the surface of the stone to restore the color of the stone. However, the reduction rate of black stone color with this method can only reach 70%. At the same time, if these two methods can only deepen the color of smooth stone, neither can achieve the effect of brightening.

Nowadays, after a series of stone care research and development, and actual construction verification, the following processes and products can be used to solve the color difference of black stone for your reference for the reasons of stone fading.

Reason 1: Natural weathering, abrasion (the bottom light is not less than 30 degrees)

Method: Use CR-7B stone crystallizer and POTEA stone crystal powder (dark color) to mix,

The dosage per square meter is 25ml (aqueous) to 20g (powder). Place the mixture on the surface of the stone and polish it with a crystal surface machine (portable polishing machine for the tabletop) and 0# steel wool until the agent is dried. The color of the stone can be quickly restored, and the effect of increasing the brightness of the stone can be achieved. Repair minor scratches on the stone surface. Use CR-7B or CR-10T for daily maintenance.

Reason two: pollution or severe wear

Method: Choose light, medium or deep renovation according to the pollution and damage of the stone (note: black stone grinding is forbidden to skip the number of grinding pieces, otherwise white scratches will be left), and restore the background light of the stone to 30 degrees the above. Also use method 1 to restore the color of the stone and increase the brightness of the stone.

The biggest difference between this process and the application of dyes or protective agents is that the operation is simple and fast. The reduction rate of the black stone color is as high as 95%, which is almost the same as the original board. It can produce a crystalline layer and increase the brightness of the stone. The stone plays a certain protective role, delays the fading of the stone, and keeps the stone as new for a long time.

Once the black stone is contaminated by soaps, chemicals and other acids and alkalis, it is easy to leave marks on the surface of the stone, which can only be removed by grinding and refurbishing. If the surface of the stone is severely worn, the bottom light of the stone can only be restored through renovation. After the black stone is refurbished and polished, there will be obvious color difference.