Iron oxide red has a wide range of applications in paint coatings, its main functions and characteristics are as follows:
Coloring and protection: Iron oxide red is a pure iron oxide, the color is red with reddish brown, has a high hiding power and coloring power, can provide a stable and bright red color for the paint. At the same time, due to its excellent light resistance and high temperature resistance, it can protect the film from the influence of light and high temperature, and extend the service life of the film.
Improve durability: iron oxide red pigment has high thermal stability and UV resistance linearity, can resist the sun and rain, aging yellow and other factors to the damage of the film. Adding an appropriate amount of iron oxide red pigment to the coating can also increase the hardness and wear resistance of the coating, and extend the service life and protection of the coating film.
Provide good hiding power: iron oxide red pigment in the paint can provide good hiding power for the pigment system, so that the surface of the film is smooth and more uniform. This is because the iron oxide red pigment has a high specific surface area and adsorption capacity, which can cover and fill the voids and pores, thereby improving the density of the pigment system.
Enhanced gloss: Iron oxide red pigment has high color saturation and good transparency, which can give bright, vivid color and good gloss to the coating film. In addition, iron oxide red pigment can also improve the reflectivity of the coating, so that the surface of the film presents a more vivid appearance.
In the application process, you need to pay attention to the following points:
The granularity of iron oxide red has an effect on its application in coatings. When the particle size is 0.2μm, iron oxide red with yellow phase, specific surface area, oil absorption and so on are also larger. If the particle size increases, the hue changes from red to purple, which can increase the mechanical strength of the coating to a certain extent.
The iron oxide red water soluble salt used in anti-rust paint is lower, which is more conducive to improving the anti-rust performance. Especially when the chloride ions are increased, water is easy to penetrate into the coating, and it will also accelerate the corrosion of the metal.
Iron oxide red in the application of paint, oil absorption is a very important index. Wetting is an important link in the whole dispersion process.
In short, iron oxide red is widely used in paint and coatings, and has a variety of advantages and characteristics, which can improve the performance and quality of coatings. In the process of use, it is necessary to pay attention to parameters such as particle size and oil absorption to ensure its application effect.