STYCAST 2057
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- Low-Abrasion Meter-Mix Processing
- Machine-Dispensable Epoxy Encapsulation
- Post-Molding Machining Capability
Product Description
LOCTITE STYCAST 2057 Epoxy Encapsulant is a black, filled low-viscosity epoxy system for general-purpose encapsulation with machine dispensing and post-molding machining. The resin has a typical viscosity of 5,500 cP at 25 deg C and is used with CAT 9 at 100:7.5 by weight. A soft filler supports rapid air release, reduces abrasion in meter-mix equipment, and improves machinability after cure. The final material provides high hardness, low water absorption, electrical insulation, and continuous service from -40 to 130 deg C, with documented intermittent exposure to 150 deg C.
Key features
- Low-abrasion processing: The soft filler reduces wear in meter-mix dispensing equipment.
- Rapid air release: The formulation supports efficient machine dispensing and encapsulation.
- Post-molding machinability: The cured material can be machined for secondary finishing.
Applications
Applications include machine-dispensed general-purpose potting and encapsulation where rapid air release and post-cure machining are required.
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Black filled epoxy resin | Used with CAT 9 catalyst | |
| Resin viscosity | 5,500 | cP | 25 deg C; Brookfield, spindle 5, 50 rpm |
| Resin specific gravity | 1.6 | Typical as supplied | |
| Mix ratio | 100:7.5 | parts by weight | Resin:CAT 9 |
| CAT 9 viscosity | 90 | cP | 25 deg C; typical |
| CAT 9 specific gravity | 1.0 | Typical as supplied | |
| Cure schedule | 16-24 h at 25 deg C; 4-6 h at 45 deg C; 1-2 h at 65 deg C | CAT 9 formulation | |
| Post-cure | 2-4 hours at highest use temperature | Recommended for final property development |
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Continuous operating temperature | -40 to 130 | deg C | Cured material |
| Intermittent operating temperature | -40 to 150 | deg C | Cured material |
| Hardness | 90 | Shore D | Typical cured value |
| Glass transition temperature | 62 | deg C | TMA; typical cured value |
| Coefficient of thermal expansion below Tg | 38 | ppm/deg C | Typical cured value |
| Linear shrinkage | 0.26 | % | Typical cured value |
| Water absorption | 0.03 | % | 1 day at 25 deg C |
| Volume resistivity | 1.5 x 10^15 | ohm cm | Typical cured value |
