A glass flake coating is any coating material that is applied to a base material in order to prevent corrosion and has the addition of very small, thin pieces of glass. Glass flake can be very thin with thicknesses ranging from 5 microns to less than 1 micron. This type of coating can have superior resistance to gas and liquid permeation.
Why add glass flake in coating
Glass flake coatings are any type of coating that has glass flakes mixed into it. The glass flakes are very fine shards of glass. They have a high aspect ratio, meaning that they are much longer and wider than they are thick. This allows for the stacking of several layers of glass flakes while still maintaining a thin overall coating measuring less than 10 micrometers. Glass flake with higher particle size distribution is applied in Flue Gas Desulphurization systems.
The glass flakes are inert and transparent, allowing them to have little interference with the rest of the coating material and improving corrosion resistance. The actual type of glass that is used depends on the application, as each types of glass has its own set of benefits.
Advantage of glass flake coating
A glass flake coating can have many advantages over other types of coating systems. Because there are so many tightly overlapping glass flakes in the anti corrosive coating, its ability to resist the permeation of gases and liquids is quite high relative to other types of coatings such as organic resin coatings. Another advantage of glass flake coatings are their ability to resist chemical attack because glass is not reactive to many types of aggressive chemicals. Glass flakes can also be used to improve the mechanical properties of a coating, such as increasing the hardness, barrier properties and imparting some fire resistance.