Description of properties and use of iron oxide pigments

Iron oxide pigment is a kind of inorganic color material with large quantity and wide range, and it is widely used Widely used in building materials, paint, ink, glue, plastic, ceramics, glass products,Hardware glass polishing, drama oil painting, painting, cosmetics, medicine coloring, copy materials, catalyst, electronic industry and recording and video magnetic memory materials.

Iron oxide pigments have excellent pigment properties:

High chemical stability and physical fastness:

Alkali resistance: to any concentration of alkali and other kinds of alkaline substances, especially buildings commonly used cement, lime mortar and so on are very stable, and the cement building components do not occur chalking effect, also does not affect its strength.

Acid resistance: It has certain resistance to general weak acids and dilute acids, but it can also gradually dissolve in strong acids, especially in the case of heating and concentration.

Light resistance: the color is unchanged under strong sunlight exposure

Heat resistance: it is stable within a certain temperature limit, beyond its temperature limit color will begin to change with the increase of temperature, the degree of change will become more and more significant, the temperature limit of each variety is as follows:

Iron oxide yellow over 130℃ gradually changed to red phase

Iron oxide red over 300℃ gradually changed to dark red

Iron oxide purple over 400℃ gradually changed to dark red

Iron oxide black over 100℃ gradually changed color to dark red

Iron oxide brown over 130℃ gradually changed to red phase

Iron green over 200℃ gradually changed to dark red

Excellent economic results

Iron oxide pigments have high coloring power, fine and uniform granularity, to ensure his use value, coupled with a lower price, to ensure the economic effect of the user.

Worldwide sales of iron oxide pigments used for coloring are estimated at 600,000 to 650,000 tons/year. The construction industry and the coating industry are the most important users.

Iron oxide pigment for cement building materials

Features: beautiful and durable color, strong resistance to sunlight exposure and climate change, as well as alkali resistance, mortar resistance, etc., no damage to the properties of cement. Strong coloring force, the most suitable particle fineness and particle organization, good dispersion.

Application: Suitable for the following various building structures and cement parts coloring.

Various indoor and outdoor colored concrete surfaces and building surfaces. Such as walls, floors, floor tiles, roof tiles, panels, sinks, blocks, towers, colored mortar, etc.

In the concrete products, the amount of iron oxide pigment is limited to 1~10%, crossing the high limit will make the mechanical strength of products decreased, generally in 5~8% is appropriate, while iron oxide pigment does not contain lead, zinc oxide these two compounds will affect the solidification time and solidification strength.

Application in paint

Features: iron oxide pigment resistance to strong exposure, atmospheric influence, resistance to dirty gas (such as hydrogen sulfide, etc.), good alkali resistance, good rust resistance, good corrosion resistance, with decoration and standard recognition, hiding power and coloring power.

Application: It is suitable for coloring and protecting materials of various coatings and paints. Such as alkyd resin, amino-alkyd, perchlorovinyl resin, polyurethane, nitro, polyester paint, etc.

Usage: Generally divided into three steps: wetting, grinding and dispersing (varnish).

Iron oxide pigments and paint fillers are mixed in the batching tank and mixed into coarse color slurry. According to the different viscosity obtained by the amount of solvent added, different grinding equipment is used, such as thick slurry can be rolled by a three-roll machine, and thin slurry can be ground by a high-efficiency sand mill (vertical or horizontal) or ball mill. Primer is generally about 50 microns, topcoat requires about 40 microns, and then in the paint tank, add tree moon, dry material, solvent, etc., paint dispersion, color matching, viscosity adjustment, etc., the last pass. Filter, packaging of finished products.

Iron oxide pigments for rubber and plastics

Features: beautiful color, strong coloring, high purity, good alkali resistance, poor acid resistance. The coating force of rubber products is quite large, in case of sunlight, air, acid and base reaction in hot sulfuric acid, in case of sulfur or hydrogen sulfide does not change, with a reinforcing effect, to prevent the aging of rubber products!

Method of use: The use of iron oxide pigments on rubber: generally, the raw rubber is washed and refined, and the rubber is processed by machinery to obtain the necessary plasticity, and then the vulcanizing agent and iron oxide pigments, zinc oxide, calcium carbonate and other filling materials are added to control the rubber raw. Reprocessing and forming various rubber parts.

Choose a reliable iron oxide pigment manufacturer: Xuan Tai pigment,Stable quality, sufficient supply, first sample order, rest assured to buy, your color engineer.