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Application of iron oxide pigment in paint

Jul 26, 2021

1. Features

Iron oxide pigments are resistant to strong eye exposure, atmospheric influences, resistant to polluted gases (such as hydrogen sulfide, etc.), good alkali resistance, good rust resistance, good corrosion resistance, decoration and identification, and strong hiding power and coloring power.


2. Purpose

It is suitable for coloring and protective substances of various paints and paints. Such as alkyd resins, amino alkyd, perchloroethylene resins, polyurethanes, nitro, polyester paints, etc.

In addition, it is also suitable for electrophoretic paint. Low paint, enamel paint, pencil paint, blend paint, baking paint, anti-rust paint, floor paint, waterline paint, etc. It can also be used for water-based coatings, powder coatings and plastic coatings. And used in toy paint, decorative paint, furniture paint, house paint, garage paint, parking lot paint, car top paint, etc.


3. How to use

Generally divided into three steps: wetting, grinding and dispersing (paint mixing).


The iron oxide pigments, paints, and fillers are mixed in the batching tank to form a coarse color paste. Different grinding equipment is used according to the different viscosity obtained by the addition of the solvent. The slurry can be ground with a high-efficiency sand mill (vertical or horizontal) or ball mill.


The primer is generally around 50 microns, and the top coat is required to be around 40 microns. Then in the paint mixing tank, add resin, dry materials, solvents, etc. for paint dispersion, color matching, viscosity adjustment, etc., final filtration, and finished product packaging .


4. Application

Iron oxide pigments have good weather resistance, high purity, good thermal stability, good compatibility with other components in the application system, can absorb ultraviolet rays, prevent degradation of base materials, and are low in cost, and can be widely used in coatings and paints .


Because of its strong hiding power, strong impermeability to ultraviolet rays and little water absorption, it can enhance the mechanical strength of the paint film in the paint film, especially the excellent characteristics in terms of adhesion, and other anti-rust pigments. For example, the mixed use of red lead, zinc yellow, etc. can enhance the stability and mechanical strength of the paint film. It is now widely used in various outdoor paints, traffic paints, metal anti-rust primers and top paints.


Iron oxide pigments used in coatings and paints include iron red, iron yellow, iron brown, iron black, iron green, mica iron oxide, and transparent iron oxide products. Among them, iron oxide red products are the most widely used.


Permeable iron is most suitable for automotive topcoats, wood coloring, can coatings, and medical packaging coloring.