Environmentally Friendly Coating Aluminium Tripolyphosphate Corrosion Inhibitor

Aluminum tripolyphosphate can be used as a new type of environmentally friendly coating corrosion inhibitor

1.Usage:

Corrosion inhibitors have been widely used as an economical and effective coating protection technology.

Inorganic corrosion inhibitors are generally used in coating protection and are also called anti-rust pigments. In addition to blocking, its function is mainly to prevent the intrusion of moisture and corrosive media by forming a passivation film to achieve the purpose of rust prevention. With the introduction of the concept of environmental friendliness, anti-rust pigments are developing towards high-efficiency, multi-functional, and pollution-free technical goals. The aluminum tripolyphosphate developed in recent years is the leader among anti-rust pigments.

Our company’s aluminum tripolyphosphate is a white powder with a relative density of 3.0~3.1; it is a Lewis solid acid with high acidity and weak acid strength (Pka=+1.5~+1.6); it reacts mildly with silicate and can be used as The curing agent (hardener) of water glass or silica sol, not only the curing time is easy to adjust, but also imparts water resistance, abrasion resistance and weather resistance to the material; it does not contain harmful heavy metal elements such as lead and chromium, has good thermal stability and is resistant to Excellent rust performance.

2.Applications:

Its molecule contains P3O105- group, which can form chelate with a variety of metal ions to form a protective film with excellent performance on the surface of fresh metal. At the same time, P3O105- also slowly depolymerizes into PO43- with anti-rust performance. It easily reacts with iron to form an excellent anti-corrosion film, which is insoluble in water and has high hardness, so that the coating exhibits excellent anti-corrosion properties.

In addition, the aluminum tripolyphosphate acts as a physical filler before the water molecules infiltrate and dissolve and iron forms a passivation film, which improves the mechanical properties of the coating and improves the anti-failure ability of the coating. Only when the ratio of aluminum tripolyphosphate and resin base material is appropriate, the excellent performance of aluminum tripolyphosphate can be displayed. When the amount of addition is too small, it will not play its due role. If the amount of addition is too large, the coating will be damaged. The porosity increases and the coating quality decreases.

3.Technical parameter table of aluminium tripolyphosphate content