How does the high tinting strength of iron oxide black in concrete colored bricks ensure bright and long-lasting colors?
Publish Time: 2024-12-05
In the production and application of concrete colored bricks, the high tinting strength of iron oxide black plays an extremely critical role, effectively ensuring the bright and long-lasting colors of colored bricks.
The reason why iron oxide black has high tinting strength is due to its unique chemical structure and physical properties. It can efficiently absorb and reflect light of specific wavelengths, thus presenting a rich and pure black color. In the production process of concrete colored bricks, only a relatively small amount of iron oxide black is needed to give the colored bricks a deep and uniform black appearance. For example, compared with some ordinary pigments, only half or even less of it may be needed to achieve the same color depth effect. This high tinting strength not only reduces the amount of pigment used and reduces production costs, but also avoids problems such as the deterioration of concrete physical properties caused by excessive addition of pigments.
In terms of color durability, iron oxide black has excellent stability. It is not easy to fade or change color when exposed to natural environmental factors such as sunlight, rain, wind and sand for a long time. This is due to its stable chemical structure, which can resist ultraviolet radiation, oxidation, and erosion by chemicals such as acids and alkalis. Concrete colored bricks laid outdoors can maintain their original black hue regardless of the high temperature exposure in the hot summer or the long soaking in the wet rainy season, so that the colored bricks always maintain a bright appearance.
In the concrete matrix, iron oxide black can be evenly dispersed and tightly combined with cement and other materials. It will not migrate or precipitate due to the passage of time or the influence of the external environment, thus ensuring the consistency and stability of the color throughout the colored brick. Even when the colored bricks are subjected to a certain degree of wear or external impact, the iron oxide black inside them can still firmly adhere to the concrete structure and maintain the brightness of the color. This perfect combination of high tinting power and stability enables concrete colored bricks to show beautiful and elegant black decorative effects for a long time in many places such as urban roads, squares, and garden landscapes, adding lasting charm and texture to the architectural environment, fully demonstrating the excellent performance and irreplaceable importance of iron oxide black in the color guarantee of concrete colored bricks.
