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How to use iron oxide pigment correctly？
2024-05-13 16:00:49
The characteristics and scope of application of iron oxide pigments
Iron oxide pigment is an inorganic pigment with high heat resistance, light resistance and weather resistance. Commonly used iron oxide pigments are yellow, red, brown, black and other colors, suitable for coloring a variety of building materials, such as concrete, cement, bricks, stone, etc.
Choose the best iron oxide pigment
In the use of iron oxide pigments, first of all, according to the specific needs to choose the appropriate variety. Iron oxide pigments are mainly divided into three colors: iron oxide red, iron oxide yellow and iron oxide black. In addition, iron oxide brown, iron oxide blue and other colors can be obtained by blending. Each color of iron oxide pigment has different physical and chemical characteristics, so in the purchase should be based on the product application field, the expected color effect and production process and other factors to choose. For example, iron oxide red and yellow are commonly used in the construction industry to color concrete, while the cosmetics industry prefers iron oxide pigments with fine particles and soft colors.
Dispersion and mixing of pigments
When using iron oxide pigments, dispersibility is a key factor affecting the final color effect. Due to the small particles of iron oxide pigments, it is easy to agglomerate in the substrate, and if the dispersion is not uniform, it may lead to uneven color or tone deviation. Therefore, the pigment should be fully pre-dispersed before use. Common dispersion methods include mechanical agitation, high-speed dispersion and ball milling. Especially in water-based coatings, the dispersibility of pigments is particularly important, and it is recommended to use appropriate dispersants to improve the dispersion effect of pigments.
In practice, the gradual addition of pigments to the substrate and continuous agitation can effectively prevent the agglomeration of pigments. In addition, if a variety of colors of iron oxide pigments need to be mixed, it should be ensured that the dispersion of each pigment is consistent to avoid color aberration.
Method for using iron oxide pigments
1. Color matching: iron oxide pigments can be mixed according to the need, for example, yellow and red can be mixed to get orange. Pay attention to the standard mix of pigments to ensure the coloring effect.
2. Mixing: mix iron oxide pigments and building materials evenly, which can be done by manual mixing or mechanical mixing.
3.Construction: the coloring of iron oxide pigments on the surface of building materials can be completed by spraying, brushing, roller coating and other ways.
Control usage
The amount of iron oxide pigment directly affects the color concentration and cost of the final product. Therefore, the dosage should be strictly controlled when using. In general, the amount of iron oxide pigment added should be adjusted according to the nature of the substrate and the expected color effect.
Too much pigment can lead to increased costs, and in some cases, the addition of excessive pigments can also affect the physical properties of the product, such as reducing the strength of concrete or affecting the heat resistance of plastics.
The use of iron oxide pigments need to pay attention to the following points:
1. Pigments should be stored in a dry, ventilated and dark place to prevent moisture, oxidation and deterioration.
2. When matching colors, pigments should be mixed according to the standard ratio to ensure the coloring effect.
3. When mixing, we should pay attention to uniform mixing to avoid uneven color.
4. In the construction, the surface of the building material should be clean, so as not to affect the coloring effect of the pigment.
5. After coloring, the construction tools and materials should be cleaned in time, so as not to dry the pigment and can not be cleaned.
Conclusion
Through the introduction of this article, I believe you have understood how to use iron oxide pigments, including its characteristics, scope of application and use skills. When using iron oxide pigments, you need to pay attention to some details. These attention points will help you better use iron oxide pigments and obtain better coloring results.