STYCAST 2662
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- High-Temperature 230 deg C Service
- Extended 24-Hour Working Window
- Staged Large-Casting Cure
Product Description
LOCTITE STYCAST 2662 High-Temperature Epoxy Encapsulant is a black, heat-cure epoxy potting system used with CAT 17 for electronics and large or complex castings exposed to elevated temperature, chemicals, and moisture. The 100:30 by-weight mix provides more than 24 hours of work life at 25 deg C, allowing extended preparation and casting time. Regular and staged cure profiles address standard and critical casting geometries. After cure, the material has a -20 to 230 deg C operating range, Shore D 88 hardness, low 24-hour water absorption, and electrical insulation properties.
Key features
- High-temperature cured service: The CAT 17 system has an operating range of -20 to 230 deg C.
- Extended work life: The 100 g mixture remains workable for more than 24 hours at 25 deg C.
- Large-casting cure profile: A staged schedule is provided for larger or critical castings.
Applications
Applications include potting electronic components exposed to harsh environments and encapsulating large or complex castings requiring high-temperature, chemical, and moisture resistance.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Additional Information
As-supplied / before-processing properties
Typical as-supplied and mixed values for STYCAST 2662 with CAT 17.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Resin appearance | Black | STYCAST 2662, as supplied | |
| Resin viscosity | 40,000 | mPa s (cP) | Brookfield; typical |
| Resin density | 1.44 | g/cm^3 | Typical |
| Mix ratio by weight | 100:30 | STYCAST 2662:CAT 17 | |
| Mixed density | 1.41 | g/cm^3 | Typical |
| Work life | >24 | hours | 100 g at 25 deg C |
| Cure schedule | Regular: 3 h at 125 deg C plus 3 h at 175 deg C; large or critical: 16 h at 65 deg C plus 6 h at 125 deg C plus 6 h at 150 deg C | Guideline alternatives |
After-processing / final-state properties
Typical cured properties for the CAT 17 configuration.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Operating temperature range | -20 to 230 | deg C | CAT 17 cured system |
| Hardness | 88 | Shore D | Typical cured value |
| Coefficient of thermal expansion | 47 | 10^-6/deg C | Typical cured value |
| Thermal conductivity | 0.53 | W/(m K) | Typical cured value |
| Water absorption | 0.01 | % | 24 hours |
| Dielectric strength | 16.5 | kV/mm | Typical cured value |
| Volume resistivity | >1 x 10^16 | ohm cm | 25 deg C |
| Flexural strength | 100 | N/mm^2 | Typical cured value |
