DOWSIL 282
Harmonization Code : 8001.20 | Unwrought tin: Tin alloys
Main features
- High-Adhesion Tape Formulation
- 55-57% Active Silicone Content
- Cured-Film Electrical Insulation
Product Description
DOWSIL 282 Adhesive is a high-viscosity silicone pressure-sensitive adhesive dispersion for coating backing materials used in masking, plating and related tape constructions. The xylene-diluted product contains 55-57% active ingredient and has a typical viscosity range of 30,000-80,000 cP at 25 deg C, supporting conventional tape-coating processes. Solvent removal and controlled peroxide-catalyzed heat cure develop the balance of tack, adhesive strength and cohesive strength required in the converted adhesive film. Cured-film electrical values apply to a 2 mil adhesive film on an aluminum panel after 96 hours at 23 deg C and 50% relative humidity.
Key features
- 55-57% active ingredient: Provides a concentrated silicone adhesive dispersion for tape coating.
- High-viscosity coating control: Typical viscosity is 30,000-80,000 cP at 25 deg C.
- Cured-film electrical data: Electrical values apply to a conditioned 2 mil film on aluminum.
Applications
Masking and plating tapes and other pressure-sensitive adhesive constructions requiring high adhesion.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Typical as-supplied dispersion properties. Values are not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Translucent | As supplied | |
| Diluent | Xylene | As supplied | |
| Active ingredient | 55-57 | % | Silicone solids content |
| Viscosity | 30000-80000 | cP | At 25 deg C |
| Specific gravity | 0.98 | At 25 deg C | |
| Flash point | 27 (81) | deg C (deg F) | Tag closed cup |
After-processing / final-state properties
Electrical properties of a cured 2 mil adhesive film on an aluminum panel, conditioned 96 hours at 23 deg C and 50% relative humidity.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Electric strength | 1500 | V/mil | 6.35 mm electrodes; 2 mil cured film |
| Dielectric constant | 2.98 | At 100 Hz | |
| Dielectric constant | 2.87 | At 100 kHz | |
| Dissipation factor | 0.005 / 0.004 | At 100 Hz / 100 kHz | |
| Volume resistivity | 7.2 x 10^15 | ohm cm | Conditioned cured film |
