ELECTRONIC GRADE COATINGS

These can be used as an anti-migration barrier to prevent lubricant materials migrating from critical wear components in gyroscopes, precision bearings, MEMS spindles and similar mechanical, critical wear devices.

The solvent is non-flammable, has low toxicity and provides acceptable environmental properties for today’s demanding electronic applications. When applied to clean, moisture-free surfaces such as copper, aluminium, ceramic, steel, tin or glass, it dries to a thin transparent film with required in many diverse applications. forming a clear, nearly invisible, uniform film that is insoluble in solvents such as heptane, toluene and water. These films can endure up to 175°C for prolonged periods and maintain good repellency.

The low surface energy films cast from the materials have excellent repellency to hydrocarbon oils, silicone oils, synthetic fluids and aqueous solutions. With a surface energy of 11-12 dynes/cm, the films compare favourably to coatings of polyethylene and polytetrafluoroethylene, which have surface energy values of approximately 31 and 18 dynes/cm respectively. This property enables non-solubilising solvents such as heptane, toluene and water, as well as liquids having low surface tension values such as lubricating oils, silicones etc., to bead and drain freely from coated surfaces whilst leaving the film intact.