UV Curable Masking Gel
HumiSeal® UV92 is:
- A soft, one part, UV curable masking material.
- A thixotropic paste
- Applied easily because of its shearing thinning viscosity profile and is 100% cured by exposure to UV to provide a temporary barrier to prevent ingress of coatings into keep out areas.
HumiSeal® UV92 has:
- Excellent solvent resistance that provides selective release from conformal coating.
- Ability to survive intermittent exposure to temperatures up to 150°C.
- REACH and RoHS compliance
Properties of HumiSeal® UV92
| Specific Gravity at 25°C | 1.04 |
| Viscosity | Thixotropic paste |
| Appearance | Milky white |
| Chemical Class | Urethane acrylate |
| Shelf Life, DOM | 12 months, stored at 18 +/-10 °C |
| Recommended Curing Conditions | UV-LED at 365nm or 405nm “H” type microwave or arc lamp (minimum power of 200 mW/cm2) |
| Cleanup Solvent | Isopropyl alcohol |
| Glass Transition Temperature (Tg) | -50 °C |
| Hardness | 40 Shore A |
| Elongation at Break | > 200 % |
| Operating Temperature Range | -50 to 150 °C |
- Applies easily by syringes, dispensing machines.
- Keeps contact points and connections free of coating.
- Will not tarnish gold, tin, copper, phosphor bronze and Sn/Pb solder.
- Easily removed by peeling – leaves no residue to interfere with subsequent operations.
Application of HumiSeal® UV92
Apply HumiSeal® UV92 at a thickness up to 5 mm to areas on a printed circuit board where the coating is not desired. Cure HumiSeal® UV92 under recommended UV exposure indicated above before applying a HumiSeal® conformal coatings. Remove HumiSeal® UV92 from the completed board by gently peeling it away from the surface of the protected area.
Availability
HumiSeal® UV92 is available in: 30CC, 55CC, 340CC, 1 liter, and 5 liter containers.
Storage
HumiSeal® UV92 should be stored between 8 °C and 28 °C in tightly closed containers away from direct sunlight and light sources.
Caution
Application of HumiSeal® UV92 should be carried out in accordance with local and National Health and Safety regulations. Use only in well-ventilated areas to avoid inhalation of vapor. Avoid contact with skin and eyes.
Consult SDS prior to use.
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