Ultra Light-Weld 9-318-F cures in seconds when exposed to UV/Visible light. Ultra Light-Weld 9-318-F peelable maskant material is designed for rapid masking of electronic components and assemblies to protect from reflow or wave soldering operations, and shield keep-out areas during conformal coating application. This maskant is highly thixtropic for manual or automated dispensing on boards or components that may be difficult to mask with other methods. It is solvent free and silicone free.
Ultra Light-Weld 9-318-F peelable mask fluoresces blue for black light inspection. Cured masks are easily removable, eliminating the concern of ionic contamination or silicone left behind by other masking methods.
FEATURES:
- UV/Visible Light cure
- Very low VOCs
- Highly Thixotrophic for manual or automated dispensing onto difficult components
- Solvent free
- Silicone free
- Blue fluorescing for Black light inspection
- Medium adhesion for peeling
APPLICATIONS:
- Masking for conformal coating applications
- Masking for wave solder or reflow processes
| Uncured properties | ||
| Property | Value | Test Method |
| Solvent content | No nonreactive solvents | N/A |
| Chemical class | Acrylated urethane | N/A |
| Appearance | Translucent Yellow | N/A |
| Soluble in | Organic solvents | N/A |
| Density, g/ml | 1.11 g/ml | ASTM D1875 |
| Viscosity, cP (20 rpm) | 50000 | DSTM D2556 |
| Cured mechanical properties | ||
| Property | Value | Test Method |
| Durometer hardness | A55 | ASTM D2240 |
| Tensile at break, MP a [psi] | 3.0 [440] | ASTM D638 |
| Elongation at breat, % | 130 | ASTM D638 |
| Modulus of Elasticity, MPa [psi] | 2.0 [310] | ASTM D638 |
| Other cured properties | ||
| Property | Value | Test method |
| Boiling water absorption, % (2 hr) | 8.5 | ASTM D570 |
| Water Absorption, % (25° C, 24 hr) | 18.0 | ASTM D570 |
| Linear Shrinkage, % | 1.9 | ASTM D2566 |