Glass flakes have been used for a number of years to reduce gas and moisture vapour
diffusion through coating and paint films. Advances in glass flake production over more
recent years, have allowed thinner and more consistent flakes to be produced. This has
led to investigative work into the properties that can be attained by way of using glass
flake as a performance improver. The work has investigated many materials both organic
and inorganic and in many areas of use - such as lyres and even cosmetics. But, the
biggest field of application is in organic resinous materials, not least of which, are those
used in the area of corrosion protection for arduous service. Surprisingly, although the
thin flakes (below 2 microns) are better performance improvers in most applications in
some applications thick flakes (over 5 microns) are found to give better results.
The high aspect ratio of a flake compared to fibres or granular fillers imparts unique
properties to materials to which they are added but great care has to be taken in
choosing addition level, thickness and size distribution to obtain the required result and
for the optimisation of a particular characteristic. This work is tedious, time consuming
and expensive but endeavour and patience can be amply rewarded.
Keywords: Coatings. Fire Retardancy. Filler. glass flake. Heat Distortion Temperature.
Moisture Vapour Transmission. MVT. Reinforcement. Epoxy. Vinyl Ester. Gas Diffusion
Barrier. Barrier Pigment. Corrosion Protection. Anti-Corrosion. Ultra Violet Light
Resistance. High Temperature Coating. Cathodic Disbondment. Atlas Test Cell. Cold
Wall. Undercutting. Aspect Ratio. Silane. Pipe. Flow Lines. Chemical Resistance