
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
• Item Name: LOCTITE® ECCOBOND BF 4
• Manufacturer: Henkel
• Technologies: Epoxy
• Color: Black liquid
• Cure Type: Heat cure
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 12 months
LOCTITE® ECCOBOND BF 4 is a black liquid epoxy adhesive designed for die attach and backfill applications in optoelectronic components. It provides strong adhesion to plastics, low outgassing, low moisture absorption, high Tg, and non-conductive properties. It is compatible with AA50 and AA50T adhesives for active alignment.
Property | Value |
---|---|
Thixotropic index (0.5/5 rpm) | 1.9 |
Viscosity (Brookfield CP51, 25°C) | 23,500 mPa·s (cP) @ 5 rpm |
Work life @ 25°C | 24 hours |
Shelf life @ -40°C | 365 days |
Recommended Cure Schedule |
---|
30 minutes @ 100°C |
Property | Value |
---|---|
Coefficient of Thermal Expansion (ppm/°C) | 32 (Below Tg), 87 (Above Tg) |
Glass Transition Temperature (Tg) | 94°C |
Extractable Ionic Content (ppm) | Cl- <70, Na+ <10, K+ <5 |
Weight Loss @ 300°C | 0.2% |
Property | Value |
---|---|
Die Shear Strength @ 25°C (2×2 mm Si die on Ag/Cu LF) | 24 kg-f |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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