As one of the common inorganic pigments, the amount of iron oxide pigments used is very large and the scale of application is also very wide. Such as the construction profession and the coating profession, it can exert very outstanding effect. Such pigments generally have the characteristics of general colors, and the chemical properties of these products are becoming more stable.
First of all, in an alkaline environment, there will be no response. The most common use of this type of product is to use it in cement. No matter what concentration of alkaline environment it is placed in, the cement is very stable and will not have a certain effect during the construction process. It will affect the strength of the cement itself.
Secondly, under most temperatures, these products have always been very stable and will not show color changes. However, if it exceeds the limit it can bear, then the trend of change will accelerate.
Iron oxide red is relatively stable, the color will not change within the controlled temperature range, and is bright and shiny, but once it exceeds the specified temperature range, it will change. As the temperature increases, the color will become darker and the degree of change will be reflected. obvious.
1. The color gradually changes to dark red over 100°C.
2. Iron oxide red gradually changes color to red phase over 130°C.
3. The color gradually changes to deep red when the temperature exceeds 300°C.
4. Iron oxide red gradually changes color to deep red over 400°C.
Third, under normal conditions, iron oxide pigments have relatively strong acid resistance. If the concentration of acid in the liquid is not high, then it can be completely dissolved within a certain moment. Especially under the condition of temperature heating, this phenomenon becomes more and more obvious.
Fourth, it will not be affected by light. We all know that many paints need to be protected from light during the placement process. However, even under the cool sun, this kind of products will not show color changes or present a metamorphosis.
