Iron oxide pigment is a kind of large-scale and wide-range inorganic color material. It is widely used. It is widely used in building materials, coatings, inks, rubber, plastics, ceramics, glass products, hardware glass polishing, theater oil paint, painting, cosmetics , Pharmaceutical coloring, photocopying materials, catalysts, electronics industry and magnetic recording materials for recording and video recording.
Iron oxide pigments have excellent pigment permeability:
High chemical stability and physical fastness:
1. Alkali resistance: It is very stable to any concentration of alkalis and other types of alkaline substances, especially cement and lime mortar commonly used in construction, and it does not pulverize cement construction components and does not affect its strength. .
2. Acid resistance: It has certain resistance to general weak acids and dilute acids, but can also gradually dissolve in strong acids, especially under warming and thicker conditions.
3. Lightfastness: The color does not change under strong sunlight.
4. Heat resistance: It is stable within a certain temperature limit, and the color and luster begin to change when it exceeds the temperature limit. As the temperature increases, the degree of change becomes more and more significant. The temperature limit of each variety is as follows:
Iron oxide yellow like iron oxide yellow 313, iron oxide yellow 920 gradually changes color to red shade over 130 ℃
Iron oxide red like iron oxide red 120, iron oxide red 130, iron oxide red 190, gradually changes color to deep red over 300 ℃
Iron oxide purple gradually changes color to deep red over 400 ℃
Iron oxide black like iron oxide black 318, iron oxide black 722 gradually changes to dark red over 100 ℃
Iron oxide brown gradually changes to red shade over 130 ℃
Iron oxide green gradually turns into dark red over 200 ℃
5. Weather-resistant: Not affected by the climatic conditions such as cold, hot, dry and wet atmosphere.
6. Fouling-resistant air: It is very stable in any fouling gas, such as hydrogen sulfide, carbon oxide, sulfur oxide, hydrogen chloride, nitrogen oxide and other gases.
7. Water resistance, oil resistance, solvent resistance: insoluble in water, various mineral oils, vegetable oils and ethers, esters, ketones and other organic solvents, and there is no penetration phenomenon.
Clear color and unique hue
The color of iron oxide pigments is very clear and pure, and does not use other organic or inorganic pigments to add polish. Although it is not as bright as the shades of some organic pigments or other pigments, the tint of iron oxide pigments has a unique style. Its soft and harmonious hue is pleasing to the eye and is suitable for painting in residential, public places, indoor and outdoor brush. Its solemn tone is especially suitable for luxurious buildings and grand and dignified construction projec
Excellent economic effects
Iron oxide pigments have high tinting strength, fine and uniform particle size, which guarantees its use value, coupled with a lower selling price, ensures the economic effect of the user.
The worldwide sales of iron oxide pigments used for coloring are estimated at 600,000 to 650,000 tons per year. The construction and coatings industries are the main users. Iron oxide is also used in non-coloring fields, such as ferrites, magnetic memory materials, and chemical catalysts. If all these areas are taken into account, the world's iron oxide demand is close to 1007 tons / year, of which 70% is synthetic iron oxide and 30% is natural iron oxide. The production capacity of China's iron oxide industry in 1995 years has been nearly 250,000 to 300,000 tons per year.