Inorganic zinc rich primers are more often used as high-temperature resistant primers. In the high-temperature anticorrosion engineering of steel structures, inorganic zinc rich primers have a good connection effect on the substrate and high-temperature topcoats. The drying speed of inorganic zinc rich primer is very fast. Today we will take a look at the coating rate of the inorganic zinc-rich primer in high temperature corrosion protection.
Even from the same manufacturer, there are many types of inorganic zinc-rich primers, and the paint coating rate and usage amount of different types are different.
The amount of inorganic zinc rich primer per square meter is related to factors such as the specific gravity of the paint, the thickness of the paint film, the number of construction passes, and the spraying method. For example: the specific gravity of the inorganic zinc rich primer is 1.80kg/L, and the wet film thickness is required to be 80 microns and the dry film thickness is 40um during construction. Under this standard, the amount of inorganic zinc rich primer per square meter is 330g. This is the theoretical amount of one brushing. If it is sprayed, the consumption will be larger. Spraying itself costs more paint than brushing.
The inorganic zinc rich primer dries very quickly. Generally, it can be surface-dried within an hour. The next construction is faster in the paint. Before using the inorganic zinc rich primer, pay attention to adding a curing agent for curing. The time is about 30 minutes. The cured inorganic zinc rich primer must be used up within five hours, otherwise the paint properties will change.