Visiontek Systems Ltd.
VISAR 05 Anti-Fog Coating
VISAR 05 Anti-fog coating is a modified polyurethane thermal cure coating that combines permanent water sheeting anti-fog performance with excellent abrasion and chemical resistance. VISAR 05 Anti-fog coating is ideally suited for applications on polycarbonate and acrylic substrates. VISAR 05 Anti-fog coating has been developed for applications where high durability and water soak resistance is required though it is not designed for exterior parts or swimming goggles.
Key performance properties
Permanent anti-fog performance
Cured coating properties
Cured coating properties were determined from testing conducted at Optical Coating Technologies and their supplier partners. Note that the substrate to be coated must withstand 125oC.
Property Typical Values
Coating thickness <5 microns
Refractive index 1.47
Taber abrasion 16% haze at 500 revs
Adhesion 100% ASTM D3359-87
Anti-fog resistance >3minutes
Water soak (de-ionized) 2 hours no change
Transparency 550nm, 3mm thick: >98%
Pencil hardness 4H
Solvent resistance Pass for ammoniated cleaners, IPA, ethanol, gasoline, diesel and cyclohexane but not acetone
In service care
VISAR 05 Anti-fog coating surfaces are designed to operate in ventilated environments or sealed environments with normal levels of humidity.
Should the coated surface become totally saturated with condensate remove it to a place where it can air dry naturally.
VISAR 05 Anti-fog coating may be rinsed under fresh running cold water to remove debris without adversely affecting its anti-fog or abrasion resistant properties.
Cleaning of a VISAR 05 Anti-fog coating coated surface should be performed when the coated surface is dry, using a dry fine cloth or tissue. Breathe on the surface and wipe away dust with light strokes in a single direction, remembering to rotate the cloth to a fresh surface with each cleaning stroke.
VisionTek Systems Ltd.
1 The Acorns
Cheshire CH2 1JL
Tel : 44 (0) 1244 370203
Fax : 44 (0) 1244 241241