Iron oxide red has strong coloring ability. Inject air at room temperature to turn it into a reddish brown colloidal solution of iron hydroxide, which serves as the crystal nucleus for precipitating iron oxide. What is the reason for the incompatibility of this substance? Here is the editor's summary:
1. Iron oxide red has poor dispersion stability and is prone to flocculation, floating, and frosting. Users are required to choose ultrafine iron red with good dispersion stability;
2. Insufficient or improper use of iron oxide red wet dispersant can lead to flocculation. At this point, it is necessary to increase the amount of adhesive dispersant or replace the wetting dispersant, and conduct compatibility tests.
3. The high shear force or high-speed dispersion conditions in the sand mill will further disperse the fillers in the iron oxide red, creating new surfaces that require the adsorption of dispersants to stabilize, which may cause flocculation.
Iron oxide red is a commonly used coloring agent in glass processing. Colored iron oxide glass can absorb both ultraviolet and infrared radiation, making it widely used in the manufacture of heat absorbing glass, sunglasses glass, industrial protective glasses glass, and anti infrared coatings. At the same time, it has low cost and UV absorption function.
Iron oxide red maintains good heat resistance, weather resistance, and UV absorption of ordinary inorganic pigments, and can be well dispersed in oily carriers. The coatings or inks prepared with it have satisfactory transparency.