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UV Conformal Coatings

MG Chemicals offers a 1-part UV conformal coating designed for high volume, high throughput coating applications. This coating cures within seconds upon exposure to UV light and contains a secondary moisture cure mechanism for shadow areas. Our UV conformal coating offers exceptional chemical and abrasion resistance compared to other chemistries.

We also offer acrylic and polyurethane conformal coatings.

 

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UV Conformal Coating
4200UV – UV Curable Conformal Coating

4200UV – UV Curable Conformal Coating

4200UV is a 1-part, UL 746E and IPC CC 830 certified UV curable conformal coating formulated for rapid cure upon exposure to UV light. It is a low viscosity coating that retains high fluorescence after curing for ease of inspection, curing to a smooth, glass-like finish. The coating contains a secondary moisture cure mechanism that allows for curing in shadowed areas.

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4200UV – UV Curable Conformal Coating

4200UV – UV Curable Conformal Coating

4200UV is a 1-part, UL 746E and IPC CC 830 certified UV curable conformal coating formulated for rapid cure upon exposure to UV light. It is a low viscosity coating that retains high fluorescence after curing for ease of inspection, curing to a smooth, glass-like finish. The coating contains a secondary moisture cure mechanism that allows for curing in shadowed areas.

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  • Certified UL and IPC – UL746E and IPC-CC-830 certified
  • Fast cure – Facilitates quick throughput in high volume production
  • Withstands harsh environments – Withstands aggressive chemical exposure
  • Electrically insulating – Allows for miniaturization
  • Easy to inspect – Contains UV trace to inspect coverage
  • High volume production – Cures quickly for high throughput
  • Oil and Gas Sensors – Resistant against chemical attack
  • Lighting equipment – Outdoor signs, LEDs

Can I apply a second coat after curing the first coat?

No, the cured film is very smooth with low surface energy. Due to this, subsequent layers do not wet out and adhere so only a single coat can be applied. Typical dry film thickness is 50-100 microns.

What is the maximum coating thickness I can achieve?

The maximum coating thickness that achieves cure is about 125 microns or 5 mils.

Can UV coatings be reworked?

Yes but this is very difficult. Long exposure to solvents like methylene chloride or our 8309 can soften the coating enough to remove but these will degrade other plastics so great care must be taken

The coating is not curing

This means the wrong light source has been used. The coating does not cure from LED exposure, instead you need a broadband source like a Mercury vapor lamp.

How can I measure dry film thickness?

The easiest way to measure film thickness is with a wet film gauge, which is a rectangular tool with a series of teeth along each edge. The teeth are incrementally set at calibrated depths along the edge. Each edge is placed on the wet film and with the help of a black light, you inspect the bottom of the teeth. Teeth that are below the wet film thickness will fluoresce when exposed to a black lamp so you check which tooth is not fluorescing. For example, if your wet film was just under 70 microns thick, you would expect teeth for 50 and 60 microns to fluoresce whereas the 70 micron tooth would be dry. Since UV coatings are 100% solids, the wet film thickness is the same as the dry film thickness.

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