Liquiguard

How To Effectively Coat Your Item Using Liquiguard

Liquiguard is a water based coating and does not contain high VOC solvents that are strictly regulated by the EPA due to serious health and environmental hazards these solvents present.
Liquiguard Technologies, Inc. coatings are water based, they will generally have a longer drying and curing cycle as opposed to solvent based coatings.
Liquiguard is a highly non-conductive coating. Make sure to carefully mask all surfaces that need to remain conductive. Vaseline is a simple and effective mask that can be cleaned up easily once the coating is dry to the touch. Extra care must be taken to mask connectors and switches.
Spraying the PC board from each of its four edges constitutes one spray cycle and will ensure proper coverage. Two to three spray cycles will be required to create an optimal 1.5 to 2 mil coating thickness.
Hold the spray can at a 12 to 14 inch distance from the surface being sprayed. Spraying from too close a proximity to the surface being sprayed will cause ‘puddling'. Spray in a well lit and ventilated area.
Space the spray cycles about 3 to 5 minutes apart at ambient temperature of approximately 77°F, to allow the previous coating to become almost tack free, prior to applying the next coating.
After spraying, invert the can and spray for a second or two to clear the spray nozzle.
The coated circuit board can be put into use once the coating is dry to the touch. Liquiguard will continue to air cure and full cure is achieved in about 72 hours depending upon ambient temperature.
Curing can be accelerated by heating the coated object in an oven for about 20 minutes at 120°F. Make sure that the coated object and associated components are capable of tolerating the heat.
A built-in UV tracer permits quality check by glowing in the presence of UV light. Coating that is less than 1 mil in thickness will not produce the tell tale glow.
High ambient humidity will slow down the drying and may also produce a milky haze in dried coatings. This condition can be cured by heating in an oven or by air drying in a less humid area.
Liquiguard is a water based product and must be protected from freezing at all times.

• Do not hesitate to contact us if you need additional help or guidance.