Multi-Cure 9-20557-LV cures upon exposure to light and is designed for rapid conformal coating of printed circuit boards and other electronic assemblies. The low elastic modulus of 9-20557-LV allows it to excel in coating applications where thermal shock performance is critical. Dymax 9-20557-LV is a Multi-Cure material specially formulated to cure with heat in applications where shadowed areas exist. Dymax Multi-Cure materials contain no nonreactive solvents and cure upon exposure to light. 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
- MIL-I-46058C Listed
- Secondary Heat Cure
- IPC-CC-830-B Approved
- Solvent Free
- Blue Fluorescing
- One Part, No Mixing or Dilution Required
- Halogen-Free
- Flexible for Enhanced Thermal Shock Performance
SPECIFICATION:
| UNCURED PROPERTIES * | ||
| Property | Value | Test Method |
| Solvent Content | No Nonreactive Solvents | N/A |
| Chemical Class | Acrylated Urethane | N/A |
| Appearance | Colorless Transparent Liquid | N/A |
| Soluble in | Organic Solvents | N/A |
| Density, g/ml | 1.02 | ASTM D1875 |
| Viscosity, cP (20 rpm) | 850 | ASTM D1084 |
| CURED MECHANICAL PROPERTIES * | ||
| Property | Value | Test Method |
| Durometer Hardness | D70 | ASTM D2240 |
| Tensile at Break, MPa [psi] | 21.7 [3150] | ASTM D638 |
| Elongation at Break, % | 100 | ASTM D638 |
| Modulus of Elasticity, MPa [psi] | 310 [45,000] | ASTM D638 |
| Glass Transition Tg, ˚C | 70 | DSTM 256‡ |
| CTEa1, mm/m/˚C | 89 | DSTM 610‡ |
| CTEa2, mm/m/˚C | 220 | DSTM 610‡ |