STYCAST US 5529
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- Low-Viscosity Potting Flow
- Extended 45-Minute Working Time
- Flexible Cured Polyurethane
Product Description
LOCTITE STYCAST US 5529 is a two-component, mineral-filled polyurethane potting compound with flexible cured behavior, low viscosity, and a long working time. Part A and Part B mix at 1:4.81 by volume or 15:85 by weight. The mixed system has a typical viscosity of 2,400 cP and a 45-minute working time at 23 deg C for a 300 g mass. Recommended cure is 12 to 24 hours at 22 to 30 deg C, with an alternate 1-to-3-hour cure at 65 to 85 deg C. The cured black material reaches Shore A85 hardness, 540 psi tensile strength, and 0.335 W/(m K) thermal conductivity for potting and encapsulation.
Key features
- Low mixed viscosity: Typical mixed viscosity is 2,400 cP at 23 deg C.
- Forty-five-minute working time: A 300 g mass provides 45 minutes of working time at 23 deg C.
- Flexible cured polyurethane: The cured potting compound is flexible and reaches Shore A85 hardness.
Applications
Potting and encapsulation.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Chemical Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Values are typical reference data, not specifications. Cure conditions are guideline recommendations.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio | 1:4.81 | Part A:Part B; by volume | |
| Mix ratio | 15:85 | Part A:Part B; by weight | |
| Mixed viscosity | 2,400 | cP | 23 deg C; typical |
| Working time | 45 | min | 300 g mass; 23 deg C; typical |
| Gel time | 90 | min | 300 g mass; 23 deg C; typical |
| Recommended cure | 12 to 24 | h | 22 to 30 deg C; guideline |
| Alternative cure | 1 to 3 | h | 65 to 85 deg C; guideline |
After-processing / final-state properties
Values describe the cured material and are typical product-selection data, not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Black | Cured material | |
| Density | 1.5 | g/cm^3 | Cured material; typical |
| Hardness | 85 | Shore A | Cured material; typical |
| Thermal conductivity | 0.335 | W/(m K) | Cured material; typical |
| Coefficient of thermal expansion | 150 | ppm/deg C | Cured material; typical |
| Moisture absorption | 0.01 | % | 24 h at 25 deg C; cured material; typical |
| Tensile strength | 540 | psi | Cured material; typical |
| Dielectric strength | 972 | V/mil | Cured material; typical |
