Glassflake...

more useful than you think

Product Range

Overview

Glass flake substrates are highly planar platelets with a very smooth surface, they are transparent and have a neutral mass colour tone.

In coating systems and polymers glass flakes are extensively used as an in-situ barrier and to improve reinforcement and thermal properties. Very thin glass flakes are used as a unique substrate for effect pigments.

Glass flakes are characterised according to the flake thickness, particle size diameter and glass composition. Additionally, for enhanced properties they can be surface treated.

Glassflake product nomenclature

GF750MC

Flake Thickness

The flake thickness can be measured manually by scanning electron microscopy (SEM) or automatically, utilising spectroscopy techniques. Glassflake manufactures products with thickness ranging from 350nm to 7 µm, with the ability to produce flakes with very low deviations in thickness, which is critical for certain applications.

Sem Image

Particle size diameter

Particle size diameter (PSD) is measured by either sieve analysis or by the more accurate laser diffraction technique. For our standard products we offer three particle size diameter ranges:

PSD Graph

Unmilled D50 ca.160 microns
Milled D50 ca. 120 microns
Micronised D50 ca. 30 microns

Glass Composition

Glass flakes are offered in a number of compositions, each with individual functionality suitable for various applications.

Typically ECR and C glasses are used for coating applications. ECR glass is used as a pigment substrate and ECR and E types are used for polymer reinforcement.

Glass Composition Graph

Surface treatment

We offer the option of surface treatment with a range of silane coupling agents. Coating with silanes further enhances flake to resin adhesion and cohesion resulting in improved mechanical properties.