Dymax Dual-Cure 9481-E is a light- and moisture-cure conformal coating specifically formulated to ensure complete cure for coating that flows underneath components on printed circuit boards. Coating in shadowed areas cures over time with ambient moisture. This coating fluoresces a vivid blue when exposed to UV light (365 nm) for easy inspection of coating coverage. Dymax 9481-E is engineered for coating thicknesses up to 0.127 mm [0.005 in]. Dymax Dual-Cure materials contain no nonreactive solvents. Their ability to cure in seconds enables faster processing, greater output, and lower processing costs. When cured with Dymax light-curing spot lamps, focused-beam lamps, or flood lamps, they deliver optimum speed and performance for conformal coating. Dymax lamps offer the ideal balance of UV and visible light for the fastest, deepest cures. This product is in full compliance with the RoHS2 directives 2015/863/EU and 2011/65/EU.
Features:
- UV/Visible Light Cure
- Bright Blue Fluorescing
- Secondary Moisture Cure
- Chemically Resistant
- Solvent Free
- MIL-I-46058C
- Very Low VOCs
- IPC-CC-830B
- Low Odor
- UL 94 V-0
- One Part, No Mixing Required
- UL 746-E
SPECIFICATION:
| UNCURED PROPERTIES * | ||
| Property | Value | Test Method |
| Solvent Content | No Nonreactive Solvents | N/A |
| Chemical Class | Acrylated Urethane | N/A |
| Appearance | Colorless/Light Amber Liquid | N/A |
| Soluble in | Organic Solvents | N/A |
| Density, g/ml | 1.07 | ASTM D1875 |
| Viscosity, cP (20 rpm) | 125 (nominal) | ASTM D2556 |
| CURED MECHANICAL PROPERTIES * ¥ | ||
| Property | Value | Test Method |
|
Durometer Hardness |
D75 | ASTM D2240 |
| D65Ω | ASTM D2240 | |
| Tensile at Break, MPa [psi] | 11 [1,600] | ASTM D638 |
| Elongation at Break, % | 60 | ASTM D638 |
| Modulus of Elasticity, MPa [psi] | 150 [21,800] | ASTM D638 |
| Glass Transition Tg, ˚C | 56 | DSTM 256‡ |
| CTEa1, mm/m/˚C | 74 | ASTM E831 |
| CTEa2, mm/m/˚C | 210 | ASTM E831 |
